Oracle12c版本中未归档隐藏参数

In this post, I will give a list of all undocumented parameters in Oracle 12.1.0.1c. Here is a query to see all the parameters (documented and undocumented) which contain the string you enter when prompted:

– Enter name of the parameter when prompted

SET linesize 235
col Parameter FOR a50
col SESSION FOR a28
col Instance FOR a55
col S FOR a1
col I FOR a1
col D FOR a1
col Description FOR a90SELECT 
  a.ksppinm  "Parameter",
  decode(p.isses_modifiable,'FALSE',NULL,NULL,NULL,b.ksppstvl) "Session",
  c.ksppstvl "Instance",
  decode(p.isses_modifiable,'FALSE','F','TRUE','T') "S",
  decode(p.issys_modifiable,'FALSE','F','TRUE','T','IMMEDIATE','I','DEFERRED','D') "I",
  decode(p.isdefault,'FALSE','F','TRUE','T') "D",
  a.ksppdesc "Description"
FROM x$ksppi a, x$ksppcv b, x$ksppsv c, v$parameter p
WHERE a.indx = b.indx AND a.indx = c.indx
  AND p.name(+) = a.ksppinm
  AND UPPER(a.ksppinm) LIKE UPPER('%&1%')
ORDER BY a.ksppinm;Enter value for 1:

Here is the list of all (2984) undocumented parameters in Oracle 12.1.0.1c  :

SQL>     col parameter for a15 word_wrapped
col Description for a55 word_wrapped
set pagesize 50000
set linesize 80
select upper(KSPPINM) parameter,   ' : ',
KSPPDESC Description from x$ksppi
where substr(ksppinm,1,1) = '_'order by 1,3;

PARAMETER                     DESCRIPTION
—————                        ——————————————————-
_4030_DUMP_BITV  :  bitvec to specify dumps prior to 4030 error
EC

_4031_DUMP_BITV  :  bitvec to specify dumps prior to 4031 error
EC

_4031_DUMP_INTE  :  Dump 4031 error once for each n-second interval
RVAL

_4031_MAX_DUMPS  :  Maximum number of 4031 dumps for this process
_4031_SGA_DUMP_  :  Dump 4031 SGA heapdump error once for each n-second
INTERVAL            interval

_4031_SGA_MAX_D  :  Maximum number of SGA heapdumps
UMPS

_ABORT_ON_MRP_C  :  abort database instance when MRP crashes
RASH

_ABORT_RECOVERY  :  if TRUE, abort recovery on join reconfigurations
_ON_JOIN

_ACCEPT_VERSION  :  List of parameters for rolling operation
S

_ACTIVE_INSTANC  :  number of active instances in the cluster database
E_COUNT

_ACTIVE_SESSION  :  active session idle limit
_IDLE_LIMIT

_ACTIVE_SESSION  :  active session legacy behavior
_LEGACY_BEHAVIO
R

_ACTIVE_STANDBY  :  if TRUE optimize dlm reconfiguration for active/standby
_FAST_RECONFIGU     OPS
RATION

_AC_ENABLE_DSCN  :  Enable Dependent Commit SCN tracking
_IN_RAC

_ADAPTIVE_DIREC  :  Adaptive Direct Read
T_READ

_ADAPTIVE_DIREC  :  Adaptive Direct Write
T_WRITE

_ADAPTIVE_FETCH  :  enable/disable adaptive fetch in parallel group by
_ENABLED

_ADAPTIVE_LOG_F  :  Threshold for frequent log file sync mode switches (per
ILE_SYNC_HIGH_S     minute)
WITCH_FREQ_THRE
SHOLD

_ADAPTIVE_LOG_F  :  Polling interval selection bias (conservative=0,
ILE_SYNC_POLL_A     aggressive=100)
GGRESSIVENESS

_ADAPTIVE_LOG_F  :  Window (in seconds) for measuring average scheduling
ILE_SYNC_SCHED_     delay
DELAY_WINDOW

_ADAPTIVE_LOG_F  :  Ratio of redo synch time to expected poll time as a
ILE_SYNC_USE_PO     percentage
LLING_THRESHOLD

_ADAPTIVE_LOG_F  :  Percentage of foreground load from when post/wait was
ILE_SYNC_USE_PO     last used
STWAIT_THRESHOL
D

_ADAPTIVE_SCALA  :  Percentage of overlap across multiple outstanding
BLE_LOG_WRITER_     writes
DISABLE_WORKER_
THRESHOLD

_ADAPTIVE_SCALA  :  Increase in redo generation rate as a percentage
BLE_LOG_WRITER_
ENABLE_WORKER_T
HRESHOLD

_ADAPTIVE_WINDO  :  enable/disable adaptive window consolidator PX plan
W_CONSOLIDATOR_
ENABLED

_ADDM_AUTO_ENAB  :  governs whether ADDM gets run automatically after every
LE                  AWR snapshot

_ADDM_SKIPRULES  :  comma-separated list of ADDM nodes to skip
_ADDM_VERSION_C  :  governs whether ADDM checks the input AWR snapshot
HECK                version

_ADD_COL_OPTIM_  :  Allows new add column optimization
ENABLED

_ADD_NULLABLE_C  :  Allows add of a nullable column with default
OLUMN_WITH_DEFA     optimization
ULT_OPTIM

_ADD_STALE_MV_T  :  add stale mv to dependency list
O_DEPENDENCY_LI
ST

_ADD_TRIM_FOR_N  :  add trimming for fixed char semantics
LSSORT

_ADG_BUFFER_WAI  :  Active Dataguard buffer wait time in cs
T_TIMEOUT

_ADG_INSTANCE_R  :  enable ADG instance recovery
ECOVERY

_ADJUST_LITERAL  :  If TRUE, we will adjust the SQL/PLUS output
_REPLACEMENT

_ADR_MIGRATE_RU  :  Enable/disable ADR Migrate Runonce action
NONCE

_ADVANCED_INDEX  :  advanced index compression options
_COMPRESSION_OP
TIONS

_ADVANCED_INDEX  :  advanced index compression options2
_COMPRESSION_OP
TIONS_VALUE

_ADVANCED_INDEX  :  advanced index compression trace
_COMPRESSION_TR
ACE

_AFFINITY_ON     :  enable/disable affinity at run time
_AGED_OUT_CURSO  :  number of seconds an aged out session cached cursor
R_CACHE_TIME        stay in cache

_AGGREGATION_OP  :  settings for aggregation optimizations
TIMIZATION_SETT
INGS

_AIOWAIT_TIMEOU  :  Number of aiowait timeouts before error is reported
TS

_ALERT_EXPIRATI  :  seconds before an alert message is moved to exception
ON                  queue

_ALERT_MESSAGE_  :  Enable Alert Message Cleanup
CLEANUP

_ALERT_MESSAGE_  :  Enable Alert Message Purge
PURGE

_ALERT_POST_BAC  :  Enable Background Alert Posting
KGROUND

_ALLOCATE_CREAT  :  should files be examined in creation order during
ION_ORDER           allocation

_ALLOCATION_UPD  :  interval at which successful search in L1 should be
ATE_INTERVAL        updated

_ALLOW_CELL_SMA  :  Allow checking smart_scan_capable Attr
RT_SCAN_ATTR

_ALLOW_COMMUTAT  :  allow for commutativity of +, * when comparing
IVITY               expressions

_ALLOW_COMPATIB  :  allow advancing DB compatibility with guaranteed
ILITY_ADV_W_GRP     restore points

_ALLOW_DROP_SNA  :  Allow dropping snapshot standby guaranteed restore
PSHOT_STANDBY_G     point
RSP

_ALLOW_DROP_TS_  :  Allow drop Tablespace with guaranteed restore points
WITH_GRP

_ALLOW_ERROR_SI  :  Allow error simulation for testing
MULATION

_ALLOW_FILE_1_O  :  don’t signal ORA-1245 due to file 1 being offline
FFLINE_ERROR_12
45

_ALLOW_LEVEL_WI  :  allow level without connect by
THOUT_CONNECT_B
Y

_ALLOW_READ_ONL  :  allow read-only open even if database is corrupt
Y_CORRUPTION

_ALLOW_RESETLOG  :  allow resetlogs even if it will cause corruption
S_CORRUPTION

_ALLOW_TERMINAL  :  Finish terminal recovery even if it may cause
_RECOVERY_CORRU     corruption
PTION

_ALL_SHARED_DBL  :  treat all dblinks as shared
INKS

_ALTERNATE_IOT_  :  enable alternate index-organized table leaf-block
LEAF_BLOCK_SPLI     split-points
T_POINTS

_ALTER_COMMON_U  :  allow local user to create objects in common schema
SER_SCHEMA

_ALWAYS_ANTI_JO  :  always use this method for anti-join when possible
IN

_ALWAYS_SEMI_JO  :  always use this method for semi-join when possible
IN

_ALWAYS_STAR_TR  :  always favor use of star transformation
ANSFORMATION

_AM_CONTAINER_F  :  allocation unit size for non-ASM containers
ILESYSTEM_AUSIZ
E

_AM_MAX_CONTAIN  :  maximum number of containers
ERS

_AM_MAX_GROUPS   :  maximum number of containers
_AM_MAX_SEG_BYT  :  maximum number of bytes per array segment
ES

_AM_TIMEOUTS_EN  :  enable timeouts
ABLED

_AM_TRACE_BUFFE  :  size of per-process I/O trace buffer
R_SIZE

_AND_PRUNING_EN  :  allow partition pruning based on multiple mechanisms
ABLED

_APPQOS_CDB_SET  :  QoSM CDB Performance Class Setting
TING

_APPQOS_PO_MULT  :  Multiplier for PC performance objective value
IPLIER

_APPQOS_QT       :  System Queue time retrieval interval
_AQSHARDED_CACH  :  Limit for cached enqueue/dequeue operations
E_LIMIT

_AQ_DISABLE_X    :  AQ – Disable new cross processes at an instance
_AQ_DQ_SESSIONS  :  Deq session count
_AQ_EQ_SESSIONS  :  Enq session count
_AQ_INIT_SHARDS  :  Minimum enqueue shards per queue at an instance
_AQ_MAX_SCAN_DE  :  Maximum allowable scan delay for AQ indexes and IOTs
LAY

_AQ_PRECRT_PART  :  Precreate Partitions
ITIONS

_AQ_PT_PROCESSE  :  Partition background processes
S

_AQ_STOP_BACKGR  :  Stop all AQ background processes
OUNDS

_AQ_SUBSHARD_SI  :  Sub Shard Size
ZE

_AQ_TM_DEQCOUNT  :  dequeue count interval for Time Managers to cleanup DEQ
INTERVAL            IOT BLOCKS

_AQ_TM_SCANLIMI  :  scan limit for Time Managers to clean up IOT
T

_AQ_TM_STATISTI  :  statistics collection window duration
CS_DURATION

_ARCH_COMPRESSI  :  archive compression enabled
ON

_ARCH_COMPRESS_  :  enable/disable row checksums for archive compressed
CHECKSUMS           blocks

_ARCH_COMP_DBG_  :  archive compression scan debug
SCAN

_ARCH_COMP_DEC_  :  decompress archive compression blocks for checking and
BLOCK_CHECK_DUM     dumping
P

_ARCH_IO_SLAVES  :  ARCH I/O slaves
_ARCH_SIM_MODE   :  Change behavior of local archiving
_ARRAY_CDB_VIEW  :  array mode enabled for CDB views
_ENABLED

_ARRAY_UPDATE_V  :  Enable array update vector read
ECTOR_READ_ENAB
LED

_ASH_COMPRESSIO  :  To enable or disable string compression in ASH
N_ENABLE

_ASH_DISK_FILTE  :  Ratio of the number of in-memory samples to the number
R_RATIO             of samples actually written to disk

_ASH_DISK_WRITE  :  To enable or disable Active Session History flushing
_ENABLE

_ASH_DUMMY_TEST  :  Oracle internal dummy ASH parameter used ONLY for
_PARAM              testing!

_ASH_EFLUSH_TRI  :  The percentage above which if the in-memory ASH is full
GGER                the emergency flusher will be triggered

_ASH_ENABLE      :  To enable or disable Active Session sampling and
flushing

_ASH_MIN_MMNL_D  :  Minimum Time interval passed to consider MMNL Dump
UMP

_ASH_SAMPLE_ALL  :  To enable or disable sampling every connected session
including ones waiting for idle waits

_ASH_SAMPLING_I  :  Time interval between two successive Active Session
NTERVAL             samples in millisecs

_ASH_SIZE        :  To set the size of the in-memory Active Session History
buffers

_ASMSID          :  ASM instance id
_ASM_ACCESS      :  ASM File access mechanism
_ASM_ACD_CHUNKS  :  initial ACD chunks created
_ASM_ADMIN_WITH  :  Does the sysdba role have administrative privileges on
_SYSDBA             ASM?

_ASM_ALLOWDEGEN  :  Allow force-mounts of DGs w/o proper quorum
ERATEMOUNTS

_ASM_ALLOW_APPL  :  Allow DROP DISK/FAILUREGROUP NOFORCE on ASM Appliances
IANCE_DROPDISK_
NOFORCE

_ASM_ALLOW_LVM_  :  Enable disk resilvering for external redundancy
RESILVERING

_ASM_ALLOW_ONLY  :  Discovery only raw devices
_RAW_DISKS

_ASM_ALLOW_SYST  :  if system alias renaming is allowed
EM_ALIAS_RENAME

_ASM_ALLOW_UNSA  :  attempt unsafe reconnect to ASM
FE_RECONNECT

_ASM_APPLIANCE_  :  Appliance configuration file name
CONFIG_FILE

_ASM_AUSIZE      :  allocation unit size
_ASM_AUTOMATIC_  :  automatically rebalance free space across zones
REZONE

_ASM_AVOID_PST_  :  Avoid PST Scans
SCANS

_ASM_BLKSIZE     :  metadata block size
_ASM_CHECK_FOR_  :  check for misbehaving CF-holding clients
MISBEHAVING_CF_
CLIENTS

_ASM_COMPATIBIL  :  default ASM compatibility level
ITY

_ASM_DBA_BATCH   :  ASM Disk Based Allocation Max Batch Size
_ASM_DBA_SPCCHK  :  ASM Disk Based Allocation Space Check Threshold
_THLD

_ASM_DBA_THRESH  :  ASM Disk Based Allocation Threshold
OLD

_ASM_DBMSDG_NOH  :  dbms_diskgroup.checkfile does not check block headers
DRCHK

_ASM_DIAG_DEAD_  :  diagnostics for dead clients
CLIENTS

_ASM_DIRECT_CON  :  Expire time for idle direct connection to ASM instance
_EXPIRE_TIME

_ASM_DISABLE_AM  :  Disable AMDU dump
DU_DUMP

_ASM_DISABLE_AS  :  disable async intra-instance messaging
YNC_MSGS

_ASM_DISABLE_MU  :  Disable checking for multiple ASM instances on a given
LTIPLE_INSTANCE     node
_CHECK

_ASM_DISABLE_PR  :  disable profile query for discovery
OFILEDISCOVERY

_ASM_DISABLE_SM  :  Do Not create smr
R_CREATION

_ASM_DISABLE_UF  :  disable ufg member kill
GMEMBERKILL

_ASM_DISABLE_UF  :  disable terminated umbilicus diagnostic
G_DUMP

_ASM_DISKERR_TR  :  Number of read/write errors per disk a process can
ACES                trace

_ASM_DISKGROUPS  :  disk groups to mount automatically set 2
2

_ASM_DISKGROUPS  :  disk groups to mount automatically set 3
3

_ASM_DISKGROUPS  :  disk groups to mount automatically set 4
4

_ASM_DISK_REPAI  :  seconds to wait before dropping a failing disk
R_TIME

_ASM_EMULATE_NF  :  Emulate NFS disk test event
S_DISK

_ASM_EMULMAX     :  max number of concurrent disks to emulate I  /O errors
_ASM_EMULTIMEOU  :  timeout before emulation begins (in 3s ticks)
T

_ASM_ENABLE_XRO  :  Enable XROV capability
V

_ASM_EVENREAD    :  ASM Even Read level
_ASM_EVENREAD_A  :  ASM Even Read Alpha
LPHA

_ASM_EVENREAD_A  :  ASM Even Read Second Alpha
LPHA2

_ASM_EVENREAD_F  :  ASM Even Read Fast Start Threshold
ASTSTART

_ASM_FAIL_RANDO  :  Randomly fail some RX enqueue gets
M_RX

_ASM_FOB_TAC_FR  :  Timeout frequency for FOB cleanup
EQUENCY

_ASM_FORCE_QUIE  :  Force diskgroup quiescing
SCE

_ASM_GLOBAL_DUM  :  System state dump level for ASM asserts
P_LEVEL

_ASM_HBEATIOWAI  :  number of secs to wait for PST Async Hbeat IO return
T

_ASM_HBEATWAITQ  :  quantum used to compute time-to-wait for a PST Hbeat
UANTUM              check

_ASM_HEALTHCHEC  :  seconds until health check takes action
K_TIMEOUT

_ASM_IMBALANCE_  :  hundredths of a percentage of inter-disk imbalance to
TOLERANCE           tolerate

_ASM_INSTLOCK_Q  :  ASM Instance Lock Quota
UOTA

_ASM_IOSTAT_LAT  :  ASM I/O statistics latch count
CH_COUNT

_ASM_KFDPEVENT   :  KFDP event
_ASM_KILL_UNRES  :  kill unresponsive ASM clients
PONSIVE_CLIENTS

_ASM_LIBRARIES   :  library search order for discovery
_ASM_LOG_SCALE_  :  Rebalance power uses logarithmic scale
REBALANCE

_ASM_LSOD_BUCKE  :  ASM lsod bucket size
T_SIZE

_ASM_MAXIO       :  Maximum size of individual I/O request
_ASM_MAX_COD_ST  :  maximum number of COD strides
RIDES

_ASM_MAX_REDO_B  :  asm maximum redo buffer size
UFFER_SIZE

_ASM_NETWORKS    :  ASM network subnet addresses
_ASM_NETWORK_TI  :  Keepalive timeout for ASM network connections
MEOUT

_ASM_NODEKILL_E  :  secs until escalating to nodekill if fence incomplete
SCALATE_TIME

_ASM_NOEVENREAD  :  List of disk groups having even read disabled
_DISKGROUPS

_ASM_PARTNER_TA  :  target maximum number of disk partners for repartnering
RGET_DISK_PART

_ASM_PARTNER_TA  :  target maximum number of failure group relationships
RGET_FG_REL         for repartnering

_ASM_PRIMARY_LO  :  Number of cycles/extents to load for non-mirrored files
AD

_ASM_PRIMARY_LO  :  True if primary load is in cycles, false if extent
AD_CYCLES           counts

_ASM_PROCS_TRAC  :  Number of processes allowed to trace a disk failure
E_DISKERR

_ASM_PROXY_STAR  :  Maximum time to wait for ASM proxy connection
TWAIT

_ASM_RANDOM_ZON  :  Random zones for new files
E

_ASM_REBALANCE_  :  maximum rebalance work unit
PLAN_SIZE

_ASM_REBALANCE_  :  number of out of space errors allowed before aborting
SPACE_ERRORS        rebalance

_ASM_REMOTE_CLI  :  timeout before killing disconnected remote clients
ENT_TIMEOUT

_ASM_REPAIRQUAN  :  quantum (in 3s) used to compute elapsed time for disk
TUM                 drop

_ASM_RESERVE_SL  :  reserve ASM slaves for CF txns
AVES

_ASM_RESYNCCKPT  :  number of extents to resync before flushing checkpoint
_ASM_ROOT_DIREC  :  ASM default root directory
TORY

_ASM_RUNTIME_CA  :  runtime capability for volume support returns supported
PABILITY_VOLUME
_SUPPORT

_ASM_SCRUB_LIMI  :  ASM disk scrubbing power
T

_ASM_SECONDARY_  :  Number of cycles/extents to load for mirrored files
LOAD

_ASM_SECONDARY_  :  True if secondary load is in cycles, false if extent
LOAD_CYCLES         counts

_ASM_SERIALIZE_  :  Serialize volume rebalance
VOLUME_REBALANC
E

_ASM_SHADOW_CYC  :  Inverse shadow cycle requirement
LE

_ASM_SKIP_DISKV  :  skip client side discovery for disk revalidate
AL_CHECK

_ASM_SKIP_RENAM  :  skip the checking of the clients for s/w compatibility
E_CHECK             for rename

_ASM_SKIP_RESIZ  :  skip the checking of the clients for s/w compatibility
E_CHECK             for resize

_ASM_STORAGEMAY  :  PST Split Possible
SPLIT

_ASM_STRIPESIZE  :  ASM file stripe size
_ASM_STRIPEWIDT  :  ASM file stripe width
H

_ASM_SYNC_REBAL  :  Rebalance uses sync I/O
ANCE

_ASM_TRACE_LIMI  :  Time-out in milliseconds to reset the number of traces
T_TIMEOUT           per disk and the number of processes allowed to trace

_ASM_USD_BATCH   :  ASM USD Update Max Batch Size
_ASM_WAIT_TIME   :  Max/imum time to wait before asmb exits
_ASSM_DEFAULT    :  ASSM default
_ASSM_FORCE_FET  :  enable metadata block fetching in ASSM segment scan
CHMETA

_ASSM_HIGH_GSP_  :  Number of blocks rejected before growing segment
THRESHOLD

_ASSM_LOW_GSP_T  :  Number of blocks rejected before collecting stats
HRESHOLD

_ASYNC_RECOVERY  :  if TRUE, issue recovery claims asynchronously
_CLAIMS

_ASYNC_RECOVERY  :  if TRUE, issue recovery reads asynchronously
_READS

_ASYNC_TS_THRES  :  check tablespace thresholds asynchronously
HOLD

_AUTOMATIC_MAIN  :  Enable AUTOTASK Test Mode
TENANCE_TEST

_AUTOMEMORY_BRO  :  memory broker statistics gathering interval for auto
KER_INTERVAL        memory

_AUTOTASK_MAX_W  :  Maximum Logical Maintenance Window Length in minutes
INDOW

_AUTOTASK_MIN_W  :  Minimum Maintenance Window Length in minutes
INDOW

_AUTOTASK_TEST_  :  Name of current Autotask Test (or test step)
NAME

_AUTOTUNE_GTX_I  :  idle time to trigger auto-shutdown a gtx background
DLE_TIME            process

_AUTOTUNE_GTX_I  :  interval to autotune global transaction background
NTERVAL             processes

_AUTOTUNE_GTX_T  :  auto-tune threshold for degree of global transaction
HRESHOLD            concurrency

_AUTO_ASSIGN_CG  :  auto assign CGs for sessions
_FOR_SESSIONS

_AUTO_BMR        :  enable/disable Auto BMR
_AUTO_BMR_BG_TI  :  Auto BMR Process Run Time
ME

_AUTO_BMR_FC_TI  :  Auto BMR Flood Control Time
ME

_AUTO_BMR_PUB_T  :  Auto BMR Publish Timeout
IMEOUT

_AUTO_BMR_REQ_T  :  Auto BMR Requester Timeout
IMEOUT

_AUTO_BMR_SESS_  :  Auto BMR Request Session Threshold
THRESHOLD

_AUTO_BMR_SYS_T  :  Auto BMR Request System Threshold
HRESHOLD

_AUTO_MANAGE_EN  :  perodically check for OFFLINE disks and attempt to
ABLE_OFFLINE_CH     ONLINE
ECK

_AUTO_MANAGE_EX  :  Automate Exadata disk management
ADATA_DISKS

_AUTO_MANAGE_IN  :  TEST: Set infrequent timeout action to run at this
FREQ_TOUT           interval, unit is seconds

_AUTO_MANAGE_IO  :  oss_ioctl buffer size, to read and respond to cell
CTL_BUFSZ           notifications

_AUTO_MANAGE_MA  :  Max. attempts to auto ONLINE an ASM disk
X_ONLINE_TRIES

_AUTO_MANAGE_NU  :  Max. number of out-standing msgs in the KXDAM pipe
M_PIPE_MSGS

_AUTO_MANAGE_NU  :  Num. tries before giving up on a automation operation
M_TRIES

_AUTO_MANAGE_ON  :  Allow Max. attempts to auto ONLINE an ASM disk after
LINE_TRIES_EXPI     lapsing this time (unit in seconds)
RE_TIME

_AUX_DFC_KEEP_T  :  auxiliary datafile copy keep time in minutes
IME

_AVAILABLE_CORE  :  number of cores for this instance
_COUNT

_AVOID_PREPARE   :  if TRUE, do not prepare a buffer when the master is
local

_AWR_CDBPERF_TH  :  Setting for AWR CDBPERF Threshold
RESHOLD

_AWR_CORRUPT_MO  :  AWR Corrupt Mode
DE

_AWR_DISABLED_F  :  Disable flushing of specified AWR tables
LUSH_TABLES

_AWR_FLUSH_THRE  :  Enable/Disable Flushing AWR Threshold Metrics
SHOLD_METRICS

_AWR_FLUSH_WORK  :  Enable/Disable Flushing AWR Workload Metrics
LOAD_METRICS

_AWR_MMON_CPUUS  :  Enable/disable AWR MMON CPU Usage Tracking
AGE

_AWR_MMON_DEEP_  :  Allows deep purge to purge AWR data for all expired
PURGE_ALL_EXPIR     snapshots
ED

_AWR_MMON_DEEP_  :  Set extent of rows to check each deep purge run
PURGE_EXTENT

_AWR_MMON_DEEP_  :  Set interval for deep purge of AWR contents
PURGE_INTERVAL

_AWR_MMON_DEEP_  :  Set max number of rows per table to delete each deep
PURGE_NUMROWS       purge run

_AWR_PDB_REGIST  :  Parameter to enable/disable AWR PDB Registration
RATION_ENABLED

_AWR_REMOTE_TAR  :  AWR Remote Target DBLink for Flushing
GET_DBLINK

_AWR_RESTRICT_M  :  AWR Restrict Mode
ODE

_AWR_SQL_CHILD_  :  Setting for AWR SQL Child Limit
LIMIT

_BACKUP_ALIGN_W  :  align backup write I/Os
RITE_IO

_BACKUP_AUTOMAT  :  automatic retry on backup write errors
IC_RETRY

_BACKUP_DISK_BU  :  number of buffers used for DISK channels
FCNT

_BACKUP_DISK_BU  :  size of buffers used for DISK channels
FSZ

_BACKUP_DISK_IO  :  BACKUP Disk I/O slaves
_SLAVES

_BACKUP_DYNAMIC  :  dynamically compute backup/restore buffer sizes
_BUFFERS

_BACKUP_ENCRYPT  :  specifies encryption block optimization mode
_OPT_MODE

_BACKUP_FILE_BU  :  number of buffers used for file access
FCNT

_BACKUP_FILE_BU  :  size of buffers used for file access
FSZ

_BACKUP_IO_POOL  :  memory to reserve from the large pool
_SIZE

_BACKUP_KGC_BLK  :  specifies buffer size to be used by HIGH compression
SIZ

_BACKUP_KGC_BUF  :  specifies buffer size to be used by BASIC compression
SZ

_BACKUP_KGC_MEM  :  specifies memory level for MEDIUM compression
LEVEL

_BACKUP_KGC_NIT  :  specifies number of iterations done by BASIC
ERS                 compression

_BACKUP_KGC_PER  :  specifies compression (performance) level for MEDIUM
FLEVEL              compression

_BACKUP_KGC_SCH  :  specifies compression scheme
EME

_BACKUP_KGC_TYP  :  specifies compression type used by kgc BASIC
E                   compression

_BACKUP_KGC_WIN  :  specifies window size for MEDIUM compression
DOWBITS

_BACKUP_KSFQ_BU  :  number of buffers used for backup/restore
FCNT

_BACKUP_KSFQ_BU  :  maximum amount of memory (in bytes) used for buffers
FMEM_MAX            for backup/restore

_BACKUP_KSFQ_BU  :  size of buffers used for backup/restore
FSZ

_BACKUP_LZO_SIZ  :  specifies buffer size for LOW compression
E

_BACKUP_MAX_GAP  :  largest gap in an incremental/optimized backup buffer,
_SIZE               in bytes

_BACKUP_MIN_CT_  :  mimimun size in bytes of change tracking to apply
UNUSED_OPTIM        unused space optimuzation

_BACKUP_SEQ_BUF  :  number of buffers used for non-DISK channels
CNT

_BACKUP_SEQ_BUF  :  size of buffers used for non-DISK channels
SZ

_BCT_BITMAPS_PE  :  number of bitmaps to store for each datafile
R_FILE

_BCT_BUFFER_ALL  :  maximum size of all change tracking buffer allocations,
OCATION_MAX         in bytes

_BCT_BUFFER_ALL  :  mininum number of extents to allocate per buffer
OCATION_MIN_EXT     allocation
ENTS

_BCT_BUFFER_ALL  :  size of one change tracking buffer allocation, in bytes
OCATION_SIZE

_BCT_CHUNK_SIZE  :  change tracking datafile chunk size, in bytes
_BCT_CRASH_RESE  :  change tracking reserved crash recovery SGA space, in
RVE_SIZE            bytes

_BCT_FILE_BLOCK  :  block size of change tracking file, in bytes
_SIZE

_BCT_FILE_EXTEN  :  extent size of change tracking file, in bytes
T_SIZE

_BCT_FIXTAB_FIL  :  change tracking file for fixed tables
E

_BCT_HEALTH_CHE  :  CTWR health check interval (seconds), zero to disable
CK_INTERVAL

_BCT_INITIAL_PR  :  initial number of entries in the private change
IVATE_DBA_BUFFE     tracking dba buffers
R_SIZE

_BCT_MRP_TIMEOU  :  CTWR MRP wait timeout (seconds), zero to wait forever
T

_BCT_PUBLIC_DBA  :  allow dynamic resizing of public dba buffers, zero to
_BUFFER_DYNRESI     disable
ZE

_BCT_PUBLIC_DBA  :  max buffer size permitted for public dba buffers, in
_BUFFER_MAXSIZE     bytes

_BCT_PUBLIC_DBA  :  total size of all public change tracking dba buffers,
_BUFFER_SIZE        in bytes

_BG_SPAWN_DIAG_  :  background processes spawn diagnostic options
OPTS

_BITMAP_OR_IMPR  :  controls extensions to partition pruning for general
OVEMENT_ENABLED     predicates

_BLOCKING_SESS_  :  blocking session graph cache size in bytes
GRAPH_CACHE_SIZ
E

_BLOCKS_PER_CAC  :  number of consecutive blocks per global cache server
HE_SERVER

_BLOCK_LEVEL_OF  :  High Latency Threshold for Block Level Offload
FLOAD_HIGH_LAT_     operations
THRESH

_BLOCK_SAMPLE_R  :  controls readahead value during block sampling
EADAHEAD_PROB_T
HRESHOLD

_BLOOM_FILTER_D  :  debug level for bloom filtering
EBUG

_BLOOM_FILTER_E  :  enables or disables bloom filter
NABLED

_BLOOM_FILTER_S  :  bloom filter vector size (in KB)
IZE

_BLOOM_FOLDING_  :  bloom filter folding density lower bound
DENSITY

_BLOOM_FOLDING_  :  Enable folding of bloom filter
ENABLED

_BLOOM_FOLDING_  :  bloom filter folding size lower bound (in KB)
MIN

_BLOOM_MAX_SIZE  :  maximum bloom filter size (in KB)
_BLOOM_MINMAX_E  :  enable or disable bloom min max filtering
NABLED

_BLOOM_PREDICAT  :  enables or disables bloom filter predicate pushdown
E_ENABLED

_BLOOM_PREDICAT  :  enables or disables bloom filter predicate offload to
E_OFFLOAD           cells

_BLOOM_PRUNING_  :  Enable partition pruning using bloom filtering
ENABLED

_BLOOM_PUSHING_  :  bloom filter pushing size upper bound (in KB)
MAX

_BLOOM_PUSHING_  :  bloom filter combined pushing size upper bound (in KB)
TOTAL_MAX

_BLOOM_RM_FILTE  :  remove bloom predicate in favor of zonemap join pruning
R                   predicate

_BLOOM_SM_ENABL  :  enable bloom filter optimization using slave mapping
ED

_BRANCH_TAGGING  :  enable branch tagging for distributed transaction
_BROADCAST_SCN_  :  broadcast-on-commit scn mode
MODE

_BROADCAST_SCN_  :  broadcast-on-commit scn wait timeout in centiseconds
WAIT_TIMEOUT

_BSLN_ADAPTIVE_  :  Adaptive Thresholds Enabled
THRESHOLDS_ENAB
LED

_BT_MMV_QUERY_R  :  allow rewrites with multiple MVs and base tables
EWRITE_ENABLED

_BUFFERED_MESSA  :  Buffered message spill age
GE_SPILL_AGE

_BUFFERED_PUBLI  :  Flow control threshold for buffered publishers except
SHER_FLOW_CONTR     capture
OL_THRESHOLD

_BUFFER_BUSY_WA  :  buffer busy wait time in centiseconds
IT_TIMEOUT

_BUFQ_STOP_FLOW  :  Stop enforcing flow control for buffered queues
_CONTROL

_BUILD_DEFERRED  :  DEFERRED MV creation skipping MV log setup update
_MV_SKIPPING_MV
LOG_UPDATE

_BUMP_HIGHWATER  :  how many blocks should we allocate per free list on
_MARK_COUNT         advancing HWM

_BWR_FOR_FLUSHE  :  if TRUE, generate a BWR for a flushed PI
D_PI

_BYPASS_SRL_FOR  :  bypass SRL for S/O EOR logs
_SO_EOR

_BYPASS_XPLATFO  :  bypass datafile header cross-platform-compliance errors
RM_ERROR

_B_TREE_BITMAP_  :  enable the use of bitmap plans for tables w. only
PLANS               B-tree indexes

_CACHE_ORL_DURI  :  cache online logs
NG_OPEN

_CACHE_STATS_MO  :  if TRUE, enable cache stats monitoring
NITOR

_CAPTURE_BUFFER  :  To set the size of the PGA I/O recording buffers
_SIZE

_CAPTURE_PUBLIS  :  Flow control threshold for capture publishers
HER_FLOW_CONTRO
L_THRESHOLD

_CASE_SENSITIVE  :  case sensitive logon enabled
_LOGON

_CAUSAL_STANDBY  :  Causal standby wait timeout
_WAIT_TIMEOUT

_CDB_COMPATIBLE  :  CDB Compatible
_CDB_RAC_AFFINI  :  rac affinity for parallel cdb operations
TY

_CDC_SUBSCRIPTI  :  Change Data Capture subscription_owner
ON_OWNER

_CDMP_DIAGNOSTI  :  cdmp directory diagnostic level
C_LEVEL

_CELL_FAST_FILE  :  Allow optimized file creation path for Cells
_CREATE

_CELL_FAST_FILE  :  Allow optimized rman restore for Cells
_RESTORE

_CELL_FILE_FORM  :  Cell file format chunk size in MB
AT_CHUNK_SIZE

_CELL_INDEX_SCA  :  enable CELL processing of index FFS
N_ENABLED

_CELL_MATERIALI  :  Force materialization of all offloadable expressions on
ZE_ALL_EXPRESSI     the cells
ONS

_CELL_MATERIALI  :  enable offload of expressions underlying virtual
ZE_VIRTUAL_COLU     columns to cells
MNS

_CELL_OBJECT_EX  :  flashcache object expiration timeout
PIRATION_HOURS

_CELL_OFFLOAD_C  :  specifies capability table to load
APABILITIES_ENA
BLED

_CELL_OFFLOAD_C  :  enable complex SQL processing offload to cells
OMPLEX_PROCESSI
NG

_CELL_OFFLOAD_E  :  enable offload of expressions to cells
XPRESSIONS

_CELL_OFFLOAD_H  :  Query offloading of hybrid columnar compressed tables
YBRIDCOLUMNAR       to exadata

_CELL_OFFLOAD_P  :  enable out-of-order SQL processing offload to cells
REDICATE_REORDE
RING_ENABLED

_CELL_OFFLOAD_S  :  enable offload of SYS_CONTEXT evaluation to cells
YS_CONTEXT

_CELL_OFFLOAD_T  :  enable timezone related SQL processing offload to cells
IMEZONE

_CELL_OFFLOAD_V  :  enable offload of predicates on virtual columns to
IRTUAL_COLUMNS      cells

_CELL_RANGE_SCA  :  enable CELL processing of index range scans
N_ENABLED

_CELL_STORIDX_M  :  Cell Storage Index mode
ODE

_CGS_ALLGROUP_P  :  CGS DBALL group polling interval in milli-seconds
OLL_TIME

_CGS_COMM_READI  :  CGS communication readiness check
NESS_CHECK

_CGS_DBALL_GROU  :  CGS DBALL group registration type
P_REGISTRATION

_CGS_DBGROUP_PO  :  CGS DB group polling interval in milli-seconds
LL_TIME

_CGS_HEALTH_CHE  :  CGS health check during reconfiguration
CK_IN_RECONFIG

_CGS_MEMBERKILL  :  allow a RIM instance to issue a CSS member kill
_FROM_RIM_INSTA
NCE

_CGS_MSG_BATCHI  :  CGS message batching
NG

_CGS_MSG_BATCH_  :  CGS message batch size in bytes
SIZE

_CGS_NODE_KILL_  :  CGS node kill escalation to CSS
ESCALATION

_CGS_NODE_KILL_  :  CGS wait time to escalate node kill to CSS in seconds
ESCALATION_WAIT

_CGS_RECONFIG_E  :  CGS reconfiguration extra wait time for CSS in seconds
XTRA_WAIT

_CGS_RECONFIG_T  :  CGS reconfiguration timeout interval
IMEOUT

_CGS_SEND_TIMEO  :  CGS send timeout value
UT

_CGS_TICKETS     :  CGS messaging tickets
_CGS_TICKET_SEN  :  CGS ticket active sendback percentage threshold
DBACK

_CGS_ZOMBIE_MEM  :  CGS zombie member kill wait time in seconds
BER_KILL_WAIT

_CHANGE_VECTOR_  :  Number of change vector buffers for media recovery
BUFFERS

_CHECK_BLOCK_AF  :  perform block check after checksum if both are turned
TER_CHECKSUM        on

_CHECK_BLOCK_NE  :  check block new invariant for flashback
W_INVARIANT_FOR
_FLASHBACK

_CHECK_COLUMN_L  :  check column length
ENGTH

_CHECK_PDBID_IN  :  Enable checking of pluggable database ID in redo
_REDO

_CHECK_TS_THRES  :  check tablespace thresholds
HOLD

_CLEANOUT_SHRCU  :  if TRUE, cleanout shrcur buffers
R_BUFFERS

_CLEANUP_ROLLBA  :  no. of undo entries to apply per transaction cleanup
CK_ENTRIES

_CLEANUP_TIMEOU  :  timeout value for PMON cleanup
T

_CLEANUP_TIMEOU  :  flags for PMON cleanup timeout
T_FLAGS

_CLEAR_BUFFER_B  :  Always zero-out buffer before reuse for security
EFORE_REUSE

_CLIENT_ENABLE_  :  enable automatic unregister after a send fails with
AUTO_UNREGISTER     timeout

_CLIENT_NTFN_CL  :  interval after which dead client registration cleanup
EANUP_INTERVAL      task repeats

_CLIENT_NTFN_PI  :  time between pings to unreachable notification clients
NGINTERVAL

_CLIENT_NTFN_PI  :  number of times to ping unreachable notification
NGRETRIES           clients

_CLIENT_NTFN_PI  :  timeout to connect to unreachable notification clients
NGTIMEOUT

_CLIENT_RESULT_  :  bypass the client result cache
CACHE_BYPASS

_CLIENT_TSTZ_ER  :  Should Client give error for suspect Timestamp with
ROR_CHECK           Timezone operations

_CLI_CACHEBKTAL  :  Percentage of memory to allocate
LOC

_CLONE_ONE_PDB_  :  Recover ROOT and only one PDB in clone database
RECOVERY

_CLOSE_CACHED_O  :  close cursors cached by PL/SQL at each commit
PEN_CURSORS

_CLOSE_DEQ_BY_C  :  Close Dequeue By Condition Cursors
OND_CURS

_CLOUD_NAME      :  gsm cloud name
_CLUSTERWIDE_GL  :  enable/disable clusterwide global transactions
OBAL_TRANSACTIO
NS

_CLUSTER_LIBRAR  :  cluster library selection
Y

_COLLAPSE_WAIT_  :  collapse wait history
HISTORY

_COLLECT_TEMPUN  :  Collect Statistics v$tempundostat
DO_STATS

_COLLECT_UNDO_S  :  Collect Statistics v$undostat
TATS

_COLUMN_COMPRES  :  Column compression ratio
SION_FACTOR

_COLUMN_ELIMINA  :  turn off predicate-only column elimination
TION_OFF

_COLUMN_TRACKIN  :  column usage tracking
G_LEVEL

_COMMON_DATA_VI  :  common objects returned through dictionary views
EW_ENABLED

_COMMON_USER_PR  :  Enforce restriction on a prefix of a Common
EFIX                User/Role/Profile name

_COMPILATION_CA  :  Size of the compilation call heaps extents
LL_HEAP_EXTENT_
SIZE

_COMPLEX_VIEW_M  :  enable complex view merging
ERGING

_COMPRESSION_AB  :  number of recompression above cache for sanity check
OVE_CACHE

_COMPRESSION_AD  :  Compression advisor
VISOR

_COMPRESSION_CH  :  percentage of chained rows allowed for Compression
AIN

_COMPRESSION_CO  :  Compression compatability
MPATIBILITY

_CONCURRENCY_CH  :  what is the chosen value of concurrency
OSEN

_CONNECTION_BRO  :  connection broker host for listen address
KER_HOST

_CONNECT_BY_USE  :  use union all for connect by
_UNION_ALL

_CONTROLFILE_AU  :  time delay (in seconds) for performing controlfile
TOBACKUP_DELAY      autobackups

_CONTROLFILE_BA  :  enable check of the copied blocks during controlfile
CKUP_COPY_CHECK     backup copy

_CONTROLFILE_BL  :  control file block size in bytes
OCK_SIZE

_CONTROLFILE_CE  :  Flash cache hint for control file accesses
LL_FLASH_CACHIN
G

_CONTROLFILE_EN  :  dump the system states after controlfile enqueue
QUEUE_DUMP          timeout

_CONTROLFILE_EN  :  control file enqueue max holding time in seconds
QUEUE_HOLDING_T
IME

_CONTROLFILE_EN  :  control file enqueue holding time tracking size
QUEUE_HOLDING_T
IME_TRACKING_SI
ZE

_CONTROLFILE_EN  :  control file enqueue timeout in seconds
QUEUE_TIMEOUT

_CONTROLFILE_SE  :  control file initial section size
CTION_INIT_SIZE

_CONTROLFILE_SE  :  control file max expansion rate
CTION_MAX_EXPAN
D

_CONTROLFILE_UP  :  controlfile update sanity check
DATE_CHECK

_CONVERT_SET_TO  :  enables conversion of set operator to join
_JOIN

_COORD_MESSAGE_  :  parallel recovery coordinator side extra message buffer
BUFFER              size

_CORRUPTED_ROLL  :  corrupted undo segment list
BACK_SEGMENTS

_COST_EQUALITY_  :  enables costing of equality semi-join
SEMI_JOIN

_CPU_EFF_THREAD  :  CPU effective thread multiplier
_MULTIPLIER

_CPU_TO_IO       :  divisor for converting CPU cost to I/O cost
_CP_NUM_HASH_LA  :  connection pool number of hash latches
TCHES

_CRASH_DOMAIN_O  :  allow domain to exit for exceptions in any thread
N_EXCEPTION

_CREATE_STAT_SE  :  create ilm statistics segment
GMENT

_CREATE_TABLE_I  :  allow creation of table in a cluster not owned by the
N_ANY_CLUSTER       user

_CR_GRANT_GLOBA  :  if TRUE, grant lock for CR requests when block is in
L_ROLE              global role

_CR_GRANT_LOCAL  :  turn 3-way CR grants off, make it automatic, or turn it
_ROLE               on

_CR_GRANT_ONLY   :  if TRUE, grant locks when possible and do not send the
block

_CR_SERVER_LOG_  :  if TRUE, flush redo log before serving a CR buffer
FLUSH

_CR_TRC_BUF_SIZ  :  size of cr trace buffer
E

_CTX_DOC_POLICY  :  enable ctx_doc.policy_stems api
_STEMS

_CURSOR_BIND_CA  :  maximum size of the cursor bind capture area
PTURE_AREA_SIZE

_CURSOR_BIND_CA  :  interval (in seconds) between two bind capture for a
PTURE_INTERVAL      cursor

_CURSOR_CACHE_T  :  number of seconds a session cached cursor stay in
IME                 cache.

_CURSOR_DB_BUFF  :  additional number of buffers a cursor can pin at once
ERS_PINNED

_CURSOR_FEATURE  :  Shared cursor features enabled bits.
S_ENABLED

_CURSOR_OBSOLET  :  Number of cursors per parent before obsoletion.
E_THRESHOLD

_CURSOR_PLAN_EN  :  enable collection and display of cursor plans
ABLED

_CURSOR_PLAN_HA  :  version of cursor plan hash value
SH_VERSION

_CURSOR_PLAN_UN  :  enables/disables using unparse to build
PARSE_ENABLED       projection/predicates

_CURSOR_RELOAD_  :  Number of failed reloads before marking cursor unusable
FAILURE_THRESHO
LD

_CURSOR_RUNTIME  :  Shared cursor runtime heap memory limit
HEAP_MEMLIMIT

_CURSOR_STATS_E  :  Enable cursor stats
NABLED

_CU_ROW_LOCKING  :  CU row level locking
_CVMAP_BUFFERS   :  Number of change vector buffers for multi instance
media recovery

_CVW_ENABLE_WEA  :  enable weak view checking
K_CHECKING

_DATAFILE_COW    :  Use copy on write snapshot for the renamed file
_DATAFILE_WRITE  :  datafile write errors crash instance
_ERRORS_CRASH_I
NSTANCE

_DATAPUMP_COMPR  :  specifies buffer size for BASIC compression algorithm
ESSBAS_BUFFER_S
IZE

_DATAPUMP_METAD  :  specifies buffer size for metadata file I/O
ATA_BUFFER_SIZE

_DATAPUMP_TABLE  :  specifies buffer size for table data file I/O
DATA_BUFFER_SIZ
E

_DATA_TRANSFER_  :  Percentange * 100 of buffer cache to transfer to data
CACHE_BC_PERC_X     transfer cache
100

_DATA_TRANSFER_  :  Size of data transfer cache
CACHE_SIZE

_DATA_WAREHOUSI  :  if TRUE, enable data warehousing scan buffers
NG_SCAN_BUFFERS

_DBFS_MODIFY_IM  :  DBFS Link allows implicit fetch on modify – only on
PLICIT_FETCH        SecureFiles

_DBG_PROC_START  :  debug process startup
UP

_DBG_SCAN        :  generic scan debug
_DBMS_SQL_SECUR  :  Security level in DBMS_SQL
ITY_LEVEL

_DBOP_ENABLED    :  Any positive number enables automatic DBOP monitoring.
0 is disabled

_DBPOOL_NAME     :  gsm database pool name
_DBRM_DYNAMIC_T  :  DBRM dynamic threshold setting
HRESHOLD

_DBRM_NUM_RUNNA  :  Resource Manager number of runnable list per NUMA node
BLE_LIST

_DBRM_QUANTUM    :  DBRM quantum
_DBRM_RUNCHK     :  Resource Manager Diagnostic Running Thread Check
_DBRM_SHORT_WAI  :  Resource Manager short wait length
T_US

_DBWR_ASYNC_IO   :  Enable dbwriter asynchronous writes
_DBWR_SCAN_INTE  :  dbwriter scan interval
RVAL

_DBWR_TRACING    :  Enable dbwriter tracing
_DB_16K_FLASH_C  :  flash cache file for 16k block size
ACHE_FILE

_DB_16K_FLASH_C  :  flash cache size for _db_16k_flash_cache_file
ACHE_SIZE

_DB_2K_FLASH_CA  :  flash cache file for 2k block size
CHE_FILE

_DB_2K_FLASH_CA  :  flash cache size for _db_2k_flash_cache_file
CHE_SIZE

_DB_32K_FLASH_C  :  flash cache file for 32k block size
ACHE_FILE

_DB_32K_FLASH_C  :  flash cache size for _db_32k_flash_cache_file
ACHE_SIZE

_DB_4K_FLASH_CA  :  flash cache file for 4k block size
CHE_FILE

_DB_4K_FLASH_CA  :  flash cache size for _db_4k_flash_cache_file
CHE_SIZE

_DB_8K_FLASH_CA  :  flash cache file for 8k block size
CHE_FILE

_DB_8K_FLASH_CA  :  flash cache size for _db_8k_flash_cache_file
CHE_SIZE

_DB_AGING_COOL_  :  Touch count set when buffer cooled
COUNT

_DB_AGING_FREEZ  :  Make CR buffers always be too cold to keep in cache
E_CR

_DB_AGING_HOT_C  :  Touch count which sends a buffer to head of replacement
RITERIA             list

_DB_AGING_STAY_  :  Touch count set when buffer moved to head of
COUNT               replacement list

_DB_AGING_TOUCH  :  Touch count which sends a buffer to head of replacement
_TIME               list

_DB_ALWAYS_CHEC  :  Always perform block check and checksum for System
K_SYSTEM_TS         tablespace

_DB_BLOCKS_PER_  :  Number of blocks per hash latch
HASH_LATCH

_DB_BLOCK_ADJCH  :  adjacent cache buffer checks – low blkchk overwrite
ECK                 parameter

_DB_BLOCK_ADJCH  :  adjacent cache buffer check level
K_LEVEL

_DB_BLOCK_ALIGN  :  Align Direct Reads
_DIRECT_READ

_DB_BLOCK_BAD_W  :  enable bad write checks
RITE_CHECK

_DB_BLOCK_BUFFE  :  Number of database blocks cached in memory: hidden
RS                  parameter

_DB_BLOCK_CACHE  :  Always clone data blocks on get (for debugging)
_CLONE

_DB_BLOCK_CACHE  :  buffer header tracing (non-zero only when debugging)
_HISTORY

_DB_BLOCK_CACHE  :  buffer header tracing level
_HISTORY_LEVEL

_DB_BLOCK_CACHE  :  buffer header tracing for lru operations
_HISTORY_LRU

_DB_BLOCK_CACHE  :  number of unmapped buffers (for tracking swap calls on
_NUM_UMAP           blocks)

_DB_BLOCK_CACHE  :  protect database blocks (true only when debugging)
_PROTECT

_DB_BLOCK_CACHE  :  protect database blocks (for strictly internal use
_PROTECT_INTERN     only)
AL

_DB_BLOCK_CHECK  :  Check more and dump block before image for debugging
_FOR_DEBUG

_DB_BLOCK_CHECK  :  check objd and typ on cache disk read
_OBJTYP

_DB_BLOCK_CHUNK  :  chunkify noncontig multi block reads
IFY_NCMBR

_DB_BLOCK_CORRU  :  threshold number of block recovery attempts
PTION_RECOVERY_
THRESHOLD

_DB_BLOCK_DO_FU  :  do full block read even if some blocks are in cache
LL_MBREADS

_DB_BLOCK_HASH_  :  Number of database block hash buckets
BUCKETS

_DB_BLOCK_HASH_  :  Number of database block hash latches
LATCHES

_DB_BLOCK_HEADE  :  number of extra buffer headers to use as guard pages
R_GUARD_LEVEL

_DB_BLOCK_HI_PR  :  Fraction of writes for high priority reasons
IORITY_BATCH_SI
ZE

_DB_BLOCK_KNOWN  :  Initial Percentage of buffers to maintain known clean
_CLEAN_PCT

_DB_BLOCK_LRU_L  :  number of lru latches
ATCHES

_DB_BLOCK_MAX_C  :  Maximum Allowed Number of CR buffers per dba
R_DBA

_DB_BLOCK_MAX_S  :  Percentage of buffers to inspect when looking for free
CAN_PCT

_DB_BLOCK_MED_P  :  Fraction of writes for medium priority reasons
RIORITY_BATCH_S
IZE

_DB_BLOCK_NUMA   :  Number of NUMA nodes
_DB_BLOCK_PREFE  :  Batched IO enable fast longjumps
TCH_FAST_LONGJU
MPS_ENABLED

_DB_BLOCK_PREFE  :  Prefetch limit in blocks
TCH_LIMIT

_DB_BLOCK_PREFE  :  Prefetch force override in blocks
TCH_OVERRIDE

_DB_BLOCK_PREFE  :  Batched IO enable private cache
TCH_PRIVATE_CAC
HE_ENABLED

_DB_BLOCK_PREFE  :  Prefetch quota as a percent of cache size
TCH_QUOTA

_DB_BLOCK_PREFE  :  Batched IO enable skip reading buffers
TCH_SKIP_READIN
G_ENABLED

_DB_BLOCK_PREFE  :  Allowed wasted percent threshold of prefetched size
TCH_WASTED_THRE
SHOLD_PERC

_DB_BLOCK_TABLE  :  Size of shared table scan read buffer
_SCAN_BUFFER_SI
ZE

_DB_BLOCK_TEMP_  :  generate redo for temp blocks
REDO

_DB_BLOCK_TRACE  :  trace buffer protect calls
_PROTECT

_DB_BLOCK_VLM_C  :  check of rvlm mapping leaks (for debugging)
HECK

_DB_BLOCK_VLM_L  :  Threshold for allowable vlm leaks
EAK_THRESHOLD

_DB_CACHE_ADVIC  :  cache advisory maximum multiple of current size to
E_MAX_SIZE_FACT     similate
OR

_DB_CACHE_ADVIC  :  cache advisory sampling factor
E_SAMPLE_FACTOR

_DB_CACHE_ADVIC  :  cache simulation sanity check
E_SANITY_CHECK

_DB_CACHE_BLOCK  :  dump short call stack for block reads
_READ_STACK_TRA
CE

_DB_CACHE_CRX_C  :  check for costly crx examination functions
HECK

_DB_CACHE_MISS_  :  check LEs after cache miss
CHECK_LES

_DB_CACHE_MMAN_  :  check for wait latch get under MMAN ops in kcb
LATCH_CHECK

_DB_CACHE_PRE_W  :  Buffer Cache Pre-Warm Enabled : hidden parameter
ARM

_DB_CACHE_PROCE  :  maximum number of cr pins a process may have
SS_CR_PIN_MAX

_DB_CACHE_WAIT_  :  trace new kslwaits
DEBUG

_DB_CHANGE_NOTI  :  enable db change notification
FICATION_ENABLE

_DB_CHECK_CELL_  :
HINTS

_DB_DISABLE_TEM  :  Disable Temp Encryption for Spills
P_ENCRYPTION

_DB_DUMP_FROM_D  :  dump contents from disk and efc
ISK_AND_EFC

_DB_DW_SCAN_ADA  :  if TRUE, enable adaptive DW scan cooling
PTIVE_COOLING

_DB_DW_SCAN_MAX  :  DW Scan adaptive cooling max shadow count
_SHADOW_COUNT

_DB_DW_SCAN_OBJ  :  DW Scan object cooling factor to cool all temperatures
_COOLING_FACTOR

_DB_DW_SCAN_OBJ  :  DW Scan object cooling interval in number of scans,
_COOLING_INTERV     seconds, or pct of cache size
AL

_DB_DW_SCAN_OBJ  :  DW scan objtect cooling policy
_COOLING_POLICY

_DB_DW_SCAN_OBJ  :  DW Scan object warming increment when an object is
_WARMING_INCREM     scanned
ENT

_DB_FAST_OBJ_CH  :  enable fast object drop sanity check
ECK

_DB_FAST_OBJ_CK  :  enable fast object checkpoint
PT

_DB_FAST_OBJ_TR  :  enable fast object truncate
UNCATE

_DB_FILE_DIRECT  :  Sequential I/O buf size
_IO_COUNT

_DB_FILE_EXEC_R  :  multiblock read count for regular clients
EAD_COUNT

_DB_FILE_FORMAT  :  Block formatting I/O buf count
_IO_BUFFERS

_DB_FILE_NONCON  :  number of noncontiguous db blocks to be prefetched
TIG_MBLOCK_READ
_COUNT

_DB_FILE_OPTIMI  :  multiblock read count for regular clients
ZER_READ_COUNT

_DB_FLASHBACK_I  :  Flashback IO Buffer Size
OBUF_SIZE

_DB_FLASHBACK_L  :  Minimum flashback database log size in bytes
OG_MIN_SIZE

_DB_FLASHBACK_L  :  Minimum flashback database log total space in bytes
OG_MIN_TOTAL_SP
ACE

_DB_FLASHBACK_N  :  Flashback Number of IO buffers
UM_IOBUF

_DB_FLASH_CACHE  :  Flash cache force replenish lower limit in buffers
_FORCE_REPLENIS
H_LIMIT

_DB_FLASH_CACHE  :  Flash cache keep buffer upper limit in percentage
_KEEP_LIMIT

_DB_FLASH_CACHE  :  Flash cache maximum latency allowed in 10 milliseconds
_MAX_LATENCY

_DB_FLASH_CACHE  :  Flash cache maximum outstanding writes allowed
_MAX_OUTSTANDIN
G_WRITES

_DB_FLASH_CACHE  :  Flash cache max read retry
_MAX_READ_RETRY

_DB_FLASH_CACHE  :  Flash cache maximum slow io allowed
_MAX_SLOW_IO

_DB_FLASH_CACHE  :  Flash cache write buffer upper limit in percentage
_WRITE_LIMIT

_DB_HANDLES      :  System-wide simultaneous buffer operations
_DB_HANDLES_CAC  :  Buffer handles cached each process
HED

_DB_HOT_BLOCK_T  :  track hot blocks for hash latch contention
RACKING

_DB_INDEX_BLOCK  :  index block checking override parameter
_CHECKING

_DB_INITIAL_CAC  :  size of cache created at startup
HESIZE_CREATE_M
B

_DB_L2_TRACING   :  flash cache debug tracing
_DB_LARGE_DIRTY  :  Number of buffers which force dirty queue to be written
_QUEUE

_DB_LOST_WRITE_  :  Enable scn based lost write detection mechanism
CHECKING

_DB_LOST_WRITE_  :  Enable _db_lost_write_checking tracing
TRACING

_DB_MTTR_ADVICE  :  MTTR advisory
_DB_MTTR_PARTIT  :  number of partitions for MTTR advisory
IONS

_DB_MTTR_SAMPLE  :  MTTR simulation sampling factor
_FACTOR

_DB_MTTR_SIM_TA  :  MTTR simulation targets
RGET

_DB_MTTR_SIM_TR  :  MTTR simulation trace size
ACE_SIZE

_DB_MTTR_TRACE_  :  dump trace entries to alert file
TO_ALERT

_DB_NOARCH_DISB  :  Image redo logging (NOARCHIVEMODE)
LE_OPTIM

_DB_NUM_EVICT_W  :  number of evict wait events
AITEVENTS

_DB_NUM_GSM      :  database number in gsm dbpool
_DB_OBJ_ENABLE_  :  enable ksr in object checkpoint/reuse
KSR

_DB_PERCENT_HOT  :  Percent of default buffer pool considered hot
_DEFAULT

_DB_PERCENT_HOT  :  Percent of keep buffer pool considered hot
_KEEP

_DB_PERCENT_HOT  :  Percent of recycle buffer pool considered hot
_RECYCLE

_DB_PERCPU_CREA  :  size of cache created per cpu in deferred cache create
TE_CACHESIZE

_DB_PREFETCH_HI  :  maintain prefetch histogram statistics in x$kcbprfhs
STOGRAM_STATIST
ICS

_DB_RECOVERY_TE  :  default database recovery temporal file location
MPORAL_FILE_DES
T

_DB_REQUIRED_PE  :  percent of fairshare a processor group should always
RCENT_FAIRSHARE     use
_USAGE

_DB_ROW_OVERLAP  :  row overlap checking override parameter for data/index
_CHECKING           blocks

_DB_TODEFER_CAC  :  buffer cache deferred create
HE_CREATE

_DB_WRITER_CHUN  :  Number of writes DBWR should wait for
K_WRITES

_DB_WRITER_COAL  :  Size of memory allocated to dbwriter for coalescing
ESCE_AREA_SIZE      writes

_DB_WRITER_COAL  :  Limit on size of coalesced write
ESCE_WRITE_LIMI
T

_DB_WRITER_FLUS  :  If FALSE, DBWR will not downgrade IMU txns for AGING
H_IMU

_DB_WRITER_HIST  :  maintain dbwr histogram statistics in x$kcbbhs
OGRAM_STATISTIC
S

_DB_WRITER_MAX_  :  Max number of outstanding DB Writer IOs
WRITES

_DB_WRITER_NOME  :  Enable DBWR no-memcopy coalescing
MCOPY_COALESCE

_DB_WRITER_VERI  :  Enable lost write detection mechanism
FY_WRITES

_DDE_FLOOD_CONT  :  Initialize Flood Control at database open
ROL_INIT

_DD_VALIDATE_RE  :  GES deadlock detection validate remote locks
MOTE_LOCKS

_DEADLOCK_DIAGN  :  automatic deadlock resolution diagnostics level
OSTIC_LEVEL

_DEADLOCK_RECOR  :  record resolved deadlocks to the alert log
D_TO_ALERT_LOG

_DEADLOCK_RESOL  :  create incidents when resolving any deadlock?
UTION_INCIDENTS
_ALWAYS

_DEADLOCK_RESOL  :  create incidents during deadlock resolution
UTION_INCIDENTS
_ENABLED

_DEADLOCK_RESOL  :  automatic deadlock resolution level
UTION_LEVEL

_DEADLOCK_RESOL  :  the minimum wait timeout required for deadlock
UTION_MIN_WAIT_     resolution
TIMEOUT_SECS

_DEADLOCK_RESOL  :  the amount of time given to process a deadlock
UTION_SIGNAL_PR     resolution signal
OCESS_THRESH_SE
CS

_DEAD_PROCESS_S  :  PMON dead process scan interval (in seconds)
CAN_INTERVAL

_DEDICATED_SERV  :  dedicated server poll count
ER_POLL_COUNT

_DEDICATED_SERV  :  dedicated server post/wait
ER_POST_WAIT

_DEDICATED_SERV  :  dedicated server post/wait call
ER_POST_WAIT_CA
LL

_DEFAULT_ENCRYP  :  default encryption algorithm
T_ALG

_DEFAULT_NON_EQ  :  sanity check on default selectivity for like/range
UALITY_SEL_CHEC     predicate
K

_DEFERRED_CONST  :  Deferred constant folding mode
ANT_FOLDING_MOD
E

_DEFERRED_LOG_D  :  consider deferred log dest as valid for log deletion
EST_IS_VALID        (TRUE/FALSE)

_DEFERRED_SEG_I  :  Enable Deferred Segment Creation in Seed
N_SEED

_DEFER_EOR_ORL_  :  defer EOR ORL archival for switchover
ARCH_FOR_SO

_DEFER_LOG_BOUN  :  defer media recovery checkpoint at log boundary
DARY_CKPT

_DEFER_LOG_COUN  :  Number of log boundaries media recovery checkpoint lags
T                   behind

_DEFER_RCV_DURI  :  Defer recovery during switchover to standby
NG_SW_TO_SBY

_DEFER_SGA_ALLO  :  Chunk size for defer sga allocation
C_CHUNK_SIZE

_DEFER_SGA_ENAB  :  Enable deferred shared memory allocation for SGA
LED

_DEFER_SGA_MIN_  :  Minimum shared pool size at startup with deferred sga
SPSZ_AT_STARTUP     enabled

_DEFER_SGA_MIN_  :  Minimum total deferred segs size for defer sga
TOTAL_DEFER_SEG     allocation
S_SZ

_DEFER_SGA_TEST  :  SA** sleeps for N secs before allocating a deferred
_ALLOC_INTV         segment

_DELAY_INDEX_MA  :  delays index maintenance until after MV is refreshed
INTAIN

_DELTA_PUSH_SHA  :  enable delta push if greater than the # of share
RE_BLOCKERS         blockers

_DEQ_EXECUTE_RE  :  deq execute reset time
SET_TIME

_DEQ_HT_CHILD_L  :  deq ht child latches
ATCHES

_DEQ_HT_MAX_ELE  :  deq ht max elements
MENTS

_DEQ_LARGE_TXN_  :  deq large txn size
SIZE

_DEQ_LOG_ARRAY_  :  deq log array size
SIZE

_DEQ_MAXWAIT_TI  :  Change wait times between dequeue calls
ME

_DEQ_MAX_FETCH_  :  deq max fetch count
COUNT

_DESIRED_README  :  The desired percentage of redo reading from memory
M_RATE

_DG_BROKER_TRAC  :  data guard broker trace level
E_LEVEL

_DG_CF_CHECK_TI  :  Data Guard controlfile check timer
MER

_DG_CORRUPT_RED  :  Corrupt redo log validation during archivals
O_LOG

_DIAG_ADR_AUTO_  :  Enable/disable ADR MMON Auto Purging
PURGE

_DIAG_ADR_ENABL  :  Parameter to enable/disable Diag ADR
ED

_DIAG_ADR_TEST_  :  Test parameter for Diagnosability
PARAM

_DIAG_ARB_BEFOR  :  dump diagnostics before killing unresponsive ARBs
E_KILL

_DIAG_BACKWARD_  :  Backward Compatibility for Diagnosability
COMPAT

_DIAG_CC_ENABLE  :  Parameter to enable/disable Diag Call Context
D

_DIAG_CONF_CAP_  :  Parameter to enable/disable Diag Configuration Capture
ENABLED

_DIAG_CRASHDUMP  :  parameter for systemstate dump level, used by DIAG
_LEVEL              during crash

_DIAG_DAEMON     :  start DIAG daemon
_DIAG_DDE_ASYNC  :  diag dde async actions: message age limit (in seconds)
_AGE_LIMIT

_DIAG_DDE_ASYNC  :  diag dde async actions: action cputime limit (in
_CPUTIME_LIMIT      seconds)

_DIAG_DDE_ASYNC  :  diag dde async actions: dispatch mode
_MODE

_DIAG_DDE_ASYNC  :  diag dde async actions: number of preallocated message
_MSGS               buffers

_DIAG_DDE_ASYNC  :  diag dde async actions: message buffer capacity
_MSG_CAPACITY

_DIAG_DDE_ASYNC  :  diag dde async actions: message processing rate – per
_PROCESS_RATE       loop

_DIAG_DDE_ASYNC  :  diag dde async actions: action runtime limit (in
_RUNTIME_LIMIT      seconds)

_DIAG_DDE_ASYNC  :  diag dde async actions: max number of concurrent slave
_SLAVES             processes

_DIAG_DDE_ENABL  :  enable DDE handling of critical errors
ED

_DIAG_DDE_FC_EN  :  Parameter to enable/disable Diag Flood Control
ABLED

_DIAG_DDE_FC_IM  :  Override Implicit Error Flood Control time parameter
PLICIT_TIME

_DIAG_DDE_FC_MA  :  Override Macro Error Flood Control time parameter
CRO_TIME

_DIAG_DDE_INC_P  :  The minimum delay between two MMON incident sweeps
ROC_DELAY           (minutes)

_DIAG_DIAGNOSTI  :  Turn off diag diagnostics
CS

_DIAG_DUMP_REQU  :  DIAG dump request debug level (0-2)
EST_DEBUG_LEVEL

_DIAG_DUMP_TIME  :  timeout parameter for SYNC dump
OUT

_DIAG_ENABLE_ST  :  enable events in instance startup notifiers
ARTUP_EVENTS

_DIAG_HM_RC_ENA  :  Parameter to enable/disable Diag HM Reactive Checks
BLED

_DIAG_HM_TC_ENA  :  Parameter to enable/disable Diag HM Test(dummy) Checks
BLED

_DIAG_PROC_ENAB  :  enable hung process diagnostic API
LED

_DIAG_PROC_MAX_  :  hung process diagnostic API max wait time in
TIME_MS             milliseconds

_DIAG_PROC_STAC  :  hung process diagnostic API stack capture type
K_CAPTURE_TYPE

_DIAG_TEST_SEG_  :  Sets trace segmentation to be in reincarnation mode
REINC_MODE

_DIAG_UTS_CONTR  :  UTS control parameter
OL

_DIAG_VERBOSE_E  :  Allow verbose error tracing on diag init
RROR_ON_INIT

_DIAG_XM_ENABLE  :  If TRUE, DIAG allows message exchanges across DB/ASM
D                   boundary

_DIMENSION_SKIP  :  control dimension skip when null feature
_NULL

_DIRECT_IO_SKIP  :  Skip current slot on error
_CUR_SLOT_ON_ER
ROR

_DIRECT_IO_SLOT  :  number of slots for direct path I/O
S

_DIRECT_IO_WSLO  :  number of write slots for direct path I/O
TS

_DIRECT_PATH_IN  :  disable direct path insert features
SERT_FEATURES

_DIRECT_READ_DE  :  enable direct read decision based on optimizer
CISION_STATISTI     statistics
CS_DRIVEN

_DISABLE_12751   :  disable policy timeout error (ORA-12751)
_DISABLE_12CBIG  :  DIsable Storing ILM Statistics in 12cBigFiles
FILE

_DISABLE_ACTIVE  :  disable active influx move during parallel media
_INFLUX_MOVE        recovery

_DISABLE_ADAPTI  :  adaptive shrunk aggregation
VE_SHRUNK_AGGRE
GATION

_DISABLE_APPLIA  :  Disable appliance-specific code
NCE_CHECK

_DISABLE_APPLIA  :  Disable appliance partnering algorithms
NCE_PARTNERING

_DISABLE_AUTOTU  :  disable autotune global transaction background
NE_GTX              processes

_DISABLE_BLOCK_  :  disable block checking at the session level
CHECKING

_DISABLE_CELL_O  :  disable cell optimized backups
PTIMIZED_BACKUP
S

_DISABLE_CPU_CH  :  disable cpu_count check
ECK

_DISABLE_CURSOR  :  disable cursor sharing
_SHARING

_DISABLE_DATALA  :  disable datalayer sampling
YER_SAMPLING

_DISABLE_DIRECT  :  Disable directory link checking
ORY_LINK_CHECK

_DISABLE_DUPLEX  :  Turn off connection duplexing
_LINK

_DISABLE_FASTOP  :  Do Not Use Fastopen
EN

_DISABLE_FAST_A  :  fast aggregation
GGREGATION

_DISABLE_FAST_V  :  disable PL/SQL fast validation
ALIDATE

_DISABLE_FBA_QR  :  disable flashback archiver query rewrite
W

_DISABLE_FBA_WP  :  disable flashback archiver wait for prepared
R                   transactions

_DISABLE_FILE_L  :  disable file locks for control, data, redo log files
OCKS

_DISABLE_FLASHB  :  disable flashback archiver
ACK_ARCHIVER

_DISABLE_FLASHB  :  Don’t use the Flashback Recyclebin optimization
ACK_RECYCLEBIN_
OPT

_DISABLE_FLASHB  :  Disable flashback wait callback
ACK_WAIT_CALLBA
CK

_DISABLE_FUNCTI  :  disable function-based index matching
ON_BASED_INDEX

_DISABLE_GVAQ_C  :  Disable cache
ACHE

_DISABLE_HEALTH  :  Disable Health Check
_CHECK

_DISABLE_HIGHRE  :  disable high-res tick counter
S_TICKS

_DISABLE_IMAGE_  :  Disable Oracle executable image checking
CHECK

_DISABLE_IMPLIC  :  disable implicit row movement
IT_ROW_MOVEMENT

_DISABLE_INCREM  :  Disable incremental checkpoints for thread recovery
ENTAL_CHECKPOIN
TS

_DISABLE_INCREM  :  Disable incremental recovery checkpoint mechanism
ENTAL_RECOVERY_
CKPT

_DISABLE_INDEX_  :  disable index block prefetching
BLOCK_PREFETCHI
NG

_DISABLE_INITIA  :  disable initial block compression
L_BLOCK_COMPRES
SION

_DISABLE_INSTAN  :  disable instance type check for ksp
CE_PARAMS_CHECK

_DISABLE_INTERF  :  disable interface checking at startup
ACE_CHECKING

_DISABLE_KCBHXO  :  disable kcbh(c)xor OSD functionality
R_OSD

_DISABLE_KCBL_F  :  Disable KCBL flashback block new optimization
LASHBACK_BLOCKN
EW_OPT

_DISABLE_KCB_FL  :  Disable KCB flashback block new optimization
ASHBACK_BLOCKNE
W_OPT

_DISABLE_KGGHSH  :  disable kgghshcrc32chk OSD functionality
CRC32_OSD

_DISABLE_LATCH_  :  disable latch-free SCN writes using 32-bit compare &
FREE_SCN_WRITES     swap
_VIA_32CAS

_DISABLE_LATCH_  :  disable latch-free SCN writes using 64-bit compare &
FREE_SCN_WRITES     swap
_VIA_64CAS

_DISABLE_LOGGIN  :  Disable logging
G

_DISABLE_METRIC  :  Disable Metrics Group (or all Metrics Groups)
S_GROUP

_DISABLE_MULTIP  :  disable multiple block size support (for debugging)
LE_BLOCK_SIZES

_DISABLE_ODM     :  disable odm feature
_DISABLE_PARALL  :  Disable parallel conventional loads
EL_CONVENTIONAL
_LOAD

_DISABLE_PRIMAR  :  disable primary bitmap switch
Y_BITMAP_SWITCH

_DISABLE_READ_O  :  Disable read-only open dictionary check
NLY_OPEN_DICT_C
HECK

_DISABLE_REBALA  :  disable space usage checks for storage reconfiguration
NCE_SPACE_CHECK

_DISABLE_RECOVE  :  Disable the read optimization during media recovery
RY_READ_SKIP

_DISABLE_ROLLIN  :  Disable Rolling Patch Feature
G_PATCH

_DISABLE_SAMPLE  :  disable row sampling IO optimization
_IO_OPTIM

_DISABLE_SAVEPO  :  disable the fix for bug 1402161
INT_RESET

_DISABLE_SELFTU  :  Disable self-tune checkpointing
NE_CHECKPOINTIN
G

_DISABLE_STORAG  :  Disable storage type checks
E_TYPE

_DISABLE_STREAM  :  streams diagnostics
S_DIAGNOSTICS

_DISABLE_STREAM  :  disable streams pool auto tuning
S_POOL_AUTO_TUN
ING

_DISABLE_SUN_RS  :  Disable IPC OSD support for Sun RSMAPI
M

_DISABLE_SYSTEM  :  disable system state dump
_STATE

_DISABLE_SYSTEM  :  Disable system state dump – wait samples
_STATE_WAIT_SAM
PLES

_DISABLE_TEMP_T  :  disable tablespace alerts for TEMPORARY tablespaces
ABLESPACE_ALERT
S

_DISABLE_THREAD  :  Disable thread internal disable feature
_INTERNAL_DISAB
LE

_DISABLE_THREAD  :  Thread snapshot
_SNAPSHOT

_DISABLE_TXN_AL  :  disable txn layer alert
ERT

_DISABLE_UNDO_T  :  disable tablespace alerts for UNDO tablespaces
ABLESPACE_ALERT
S

_DISABLE_WAIT_S  :  Disable wait state
TATE

_DISCRETE_TRANS  :  enable OLTP mode
ACTIONS_ENABLED

_DISKMON_PIPE_N  :  DiSKMon skgznp pipe name
AME

_DISK_SECTOR_SI  :  if TRUE, OSD sector size could be overridden
ZE_OVERRIDE

_DISPATCHER_RAT  :  scale to display rate statistic (100ths of a second)
E_SCALE

_DISPATCHER_RAT  :  time-to-live for rate statistic (100ths of a second)
E_TTL

_DISTINCT_VIEW_  :  enables unnesting of in subquery into distinct view
UNNESTING

_DISTRIBUTED_RE  :  number of seconds RECO holds outbound connections open
COVERY_CONNECTI
ON_HOLD_TIME

_DLMTRACE        :  Trace string of global enqueue type(s)
_DML_BATCH_ERRO  :  number or error handles allocated for DML in batch mode
R_LIMIT

_DML_FREQUENCY_  :  Control DML frequency tracking
TRACKING

_DML_FREQUENCY_  :  Control automatic advance and broadcast of DML
TRACKING_ADVANC     frequencies
E

_DML_FREQUENCY_  :  Number of slots to use for DML frequency tracking
TRACKING_SLOTS

_DML_FREQUENCY_  :  Time length of each slot for DML frequency tracking
TRACKING_SLOT_T
IME

_DML_MONITORING  :  enable modification monitoring
_ENABLED

_DM_DMF_DETAILS  :  set dm dmf details compatibility version
_COMPATIBILITY

_DM_ENABLE_LEGA  :  revert dmf output types to pre-12.1.0.1
CY_DMF_OUTPUT_T
YPES

_DM_MAX_SHARED_  :  max percentage of the shared pool to use for a mining
POOL_PCT            model

_DNFS_RDMA_ENAB  :  Enable dNFS RDMA transfers
LE

_DNFS_RDMA_MAX   :  Maximum size of dNFS RDMA transfer
_DNFS_RDMA_MIN   :  Minimum size of dNFS RDMA transfer
_DOMAIN_INDEX_B  :  maximum number of rows from one call to domain index
ATCH_SIZE           fetch routine

_DOMAIN_INDEX_D  :  maximum number of rows for one call to domain index dml
ML_BATCH_SIZE       routines

_DRA_BMR_NUMBER  :  Maximum number of BMRs that can be done to a file
_THRESHOLD

_DRA_BMR_PERCEN  :  Maximum percentage of blocks in a file that can be
T_THRESHOLD         BMR-ed

_DRA_ENABLE_OFF  :  Enable the periodic creation of the offline dictionary
LINE_DICTIONARY     for DRA

_DRM_PARALLEL_F  :  if TRUE enables parallel drm freeze
REEZE

_DROP_FLASHBACK  :  Drop logical operations enqueue immediately during
_LOGICAL_OPERAT     flashback marker generation
IONS_ENQ

_DROP_STAT_SEGM  :  drop ilm statistics segment
ENT

_DROP_TABLE_GRA  :  drop_table_granule
NULE

_DROP_TABLE_OPT  :  reduce SGA memory use during drop of a partitioned
IMIZATION_ENABL     table
ED

_DSC_FEATURE_LE  :  controls the feature level for deferred segment
VEL                 creation

_DSKM_HEALTH_CH  :  DiSKMon health check counter
ECK_CNT

_DSS_CACHE_FLUS  :  enable full cache flush for parallel execution
H

_DS_ENABLE_AUTO  :  Dynamic Sampling Service Autonomous Transaction control
_TXN                parameter

_DS_IOCOUNT_IOS  :  Dynamic Sampling Service defaults: #IOs and IO Size
IZE

_DS_PARSE_MODEL  :  Dynamic Sampling Service Parse Model control parameter
_DTREE_AREA_SIZ  :  size of Decision Tree Classification work area
E

_DTREE_BINNING_  :  Decision Tree Binning Enabled
ENABLED

_DTREE_BINTEST_  :  Decision Tree Binning Test ID
ID

_DTREE_COMPRESS  :  Decision Tree Using Compressed Bitmaps Enabled
BMP_ENABLED

_DTREE_MAX_SURR  :  maximum number of surrogates
OGATES

_DTREE_PRUNING_  :  Decision Tree Pruning Enabled
ENABLED

_DUMMY_INSTANCE  :  dummy instance started by RMAN
_DUMP_10261_LEV  :  Dump level for event 10261, 1=>minimal dump 2=>top pga
EL                  dump

_DUMP_COMMON_SU  :  dump common subexpressions
BEXPRESSIONS

_DUMP_CONNECT_B  :  dump connect by loop error message into trc file
Y_LOOP_DATA

_DUMP_CURSOR_HE  :  dump comp/exec heap sizes to tryace file
AP_SIZES

_DUMP_INTERVAL_  :  trace dump time interval limit (in seconds)
LIMIT

_DUMP_MAX_LIMIT  :  max number of dump within dump interval
_DUMP_QBC_TREE   :  dump top level query parse tree to trace
_DUMP_RCVR_IPC   :  if TRUE enables IPC dump at instance eviction time
_DUMP_SCN_INCRE  :  Dumps scn increment stack per session
MENT_STACK

_DUMP_SYSTEM_ST  :  scope of sysstate dump during instance termination
ATE_SCOPE

_DUMP_TRACE_SCO  :  scope of trace dump during a process crash
PE

_DYNAMIC_RLS_PO  :  rls policies are dynamic
LICIES

_DYNAMIC_STATS_  :  delay threshold (in seconds) between sending statistics
THRESHOLD           messages

_EIGHTEENTH_SPA  :  eighteenth spare parameter – string
RE_PARAMETER

_EIGHTH_SPARE_P  :  eighth spare parameter – integer
ARAMETER

_ELEVENTH_SPARE  :  eleventh spare parameter – integer
_PARAMETER

_ELIMINATE_COMM  :  enables elimination of common sub-expressions
ON_SUBEXPR

_EMON_MAX_ACTIV  :  maximum open connections to clients per emon
E_CONNECTIONS

_EMON_OUTBOUND_  :  timeout for completing connection set up to clients
CONNECT_TIMEOUT

_EMON_POOL_INC   :  increment in EMON slaves per pool type
_EMON_POOL_MAX   :  maximum number of EMON slaves per pool type
_EMON_POOL_MIN   :  minimum number of EMON slaves per pool type
_EMON_REGULAR_N  :  number of EMON slaves doing regular database
TFN_SLAVES          notifications

_EMON_SEND_TIME  :  send timeout after which the client is unregistered
OUT

_EMX_CONTROL     :  EM Express control (internal use only)
_EMX_MAX_SESSIO  :  Maximum number of sessions in the EM Express cache
NS

_EMX_SESSION_TI  :  Session timeout (sec) in the EM Express cache
MEOUT

_ENABLE_12G_BFT  :  enable 12g bigfile tablespace
_ENABLE_ASYNCVI  :  enable asynch vectored I/O
O

_ENABLE_AUTOMAT  :  if 1, Automated Maintenance Is Enabled
IC_MAINTENANCE

_ENABLE_AUTOMAT  :  Automatic SQL Tuning Advisory enabled parameter
IC_SQLTUNE

_ENABLE_BLOCK_L  :  enable block level recovery
EVEL_TRANSACTIO
N_RECOVERY

_ENABLE_CHECK_T  :  enable checking of corruption caused by canceled
RUNCATE             truncate

_ENABLE_COLUMNA  :  Enable Columnar Flash Cache Rewrite
R_CACHE

_ENABLE_CSCN_CA  :  enable commit SCN caching for all transactions
CHING

_ENABLE_DDL_WAI  :  use this to turn off ddls with wait semantics
T_LOCK

_ENABLE_DEFAULT  :  enable default implementation of hard affinity osds
_AFFINITY

_ENABLE_DEFAULT  :  Enable Default Tablespace Utilization Threshold for
_TEMP_THRESHOLD     UNDO Tablespaces

_ENABLE_DEFAULT  :  Enable Default Tablespace Utilization Threshold for
_UNDO_THRESHOLD     TEMPORARY Tablespaces

_ENABLE_DML_LOC  :  enable dml lock escalation against partitioned tables
K_ESCALATION        if TRUE

_ENABLE_EDITION  :  enable editions for all users
S_FOR_USERS

_ENABLE_EXCHANG  :  use check constraints on the table for validation
E_VALIDATION_US
ING_CHECK

_ENABLE_FAST_RE  :  enable fast refresh after move tablespace
F_AFTER_MV_TBS

_ENABLE_FFW      :  FAL FORWARDING
_ENABLE_FLASH_L  :  Enable Exadata Smart Flash Logging
OGGING

_ENABLE_FRONT_E  :  enable front end view optimization
ND_VIEW_OPTIMIZ
ATION

_ENABLE_HASH_OV  :  TRUE – enable hash cluster overflow based on SIZE
ERFLOW

_ENABLE_HEATMAP  :  heatmap related – to be used by oracle dev only
_INTERNAL

_ENABLE_HWM_SYN  :  enable HWM synchronization
C

_ENABLE_IEE_STA  :  enables IEE stats gathering
TS

_ENABLE_ILM_FLU  :  Enable ILM Stats Flush
SH_STATS

_ENABLE_ILM_TES  :  Enable Test ILM Stats Flush
TFLUSH_STATS

_ENABLE_KQF_PUR  :  Enable KQF fixed runtime table purge
GE

_ENABLE_LGPG_DE  :  Enable LGPG debug mode
BUG

_ENABLE_LIST_IO  :  Enable List I/O
_ENABLE_MIDTIER  :  enable midtier affinity metrics processing
_AFFINITY

_ENABLE_MINSCN_  :  enable/disable minscn optimization for CR
CR

_ENABLE_NATIVEN  :  Enable skgxp driver usage for native net
ET_TCPIP

_ENABLE_NUMA_IN  :  Enable NUMA interleave mode
TERLEAVE

_ENABLE_NUMA_OP  :  Enable NUMA specific optimizations
TIMIZATION

_ENABLE_NUMA_SU  :  Enable NUMA support and optimizations
PPORT

_ENABLE_OBJ_QUE  :  enable object queues
UES

_ENABLE_OFFLOAD  :  Enable offloaded writes for Unit Test
ED_WRITES

_ENABLE_ONLINE_  :  Allow online index creation algorithm without S DML
INDEX_WITHOUT_S     lock
_LOCKING

_ENABLE_PLUGGAB  :  Enable Pluggable Database
LE_DATABASE

_ENABLE_QUERY_R  :  mv rewrite on remote table/view
EWRITE_ON_REMOT
E_OBJS

_ENABLE_REDO_GL  :  LGWR post globally on write
OBAL_POST

_ENABLE_REFRESH  :  enable or disable MV refresh scheduling (revert to 9.2
_SCHEDULE           behavior)

_ENABLE_RELIABL  :  Enable reliable latch waits
E_LATCH_WAITS

_ENABLE_RENAME_  :  enable RENAME-clause using ALTER USER statement
USER

_ENABLE_RLB      :  enable RLB metrics processing
_ENABLE_ROW_SHI  :  use the row shipping optimization for wide table
PPING               selects

_ENABLE_SB_DETE  :  Split Brain Detection
CTION

_ENABLE_SCHEMA_  :  enable DDL operations (e.g. creation) involving schema
SYNONYMS            synonyms

_ENABLE_SCN_WAI  :  use this to turn off scn wait interface in kta
T_INTERFACE

_ENABLE_SECUREF  :  Enable securefile flashback optimization
ILE_FLASHBACK_O
PT

_ENABLE_SEPARAB  :  enable/disable separable transactions
LE_TRANSACTIONS

_ENABLE_SHARED_  :  temporary to disable/enable kgh policy
POOL_DURATIONS

_ENABLE_SHARED_  :  Enable shared server vector I/O
SERVER_VECTOR_I
O

_ENABLE_SPACEBG  :  enable space management background task
_ENABLE_SPACE_P  :  enable space pre-allocation
REALLOCATION

_ENABLE_TABLESP  :  enable tablespace alerts
ACE_ALERTS

_ENABLE_TYPE_DE  :  enable type dependent selectivity estimates
P_SELECTIVITY

_ENDPROT_CHUNK_  :  chunk comment for selective overrun protection
COMMENT

_ENDPROT_HEAP_C  :  heap comment for selective overrun protection
OMMENT

_ENDPROT_SUBHEA  :  selective overrun protection for subeheaps
PS

_ENQUEUE_DEADLO  :  enable deadlock detection on all global enqueues
CK_DETECT_ALL_G
LOBAL_LOCKS

_ENQUEUE_DEADLO  :  deadlock scan interval
CK_SCAN_SECS

_ENQUEUE_DEADLO  :  requests with timeout <= this will not have deadlock
CK_TIME_SEC         detection

_ENQUEUE_DEBUG_  :  debug enqueue multi instance
MULTI_INSTANCE

_ENQUEUE_HASH    :  enqueue hash table length
_ENQUEUE_HASH_C  :  enqueue hash chain latches
HAIN_LATCHES

_ENQUEUE_LOCKS   :  locks for managed enqueues
_ENQUEUE_PARANO  :  enable enqueue layer advanced debugging checks
IA_MODE_ENABLED

_ENQUEUE_RESOUR  :  resources for enqueues
CES

_ENQUEUE_SYNC_R  :  max number of times the bg process to retry synchronous
ETRY_ATTEMPTS       enqueue open if it failed because master could not
allocate memory

_ENQUEUE_SYNC_S  :  simulate master instance running out of memory when
IM_MEM_ERROR        synchronously getting a remotely mastered enqueue

_EVOLVE_PLAN_BA  :  Level of detail to show in plan verification/evolution
SELINE_REPORT_L     report
EVEL

_EVT_SYSTEM_EVE  :  disable system event propagation
NT_PROPAGATION

_EXPAND_AGGREGA  :  expand aggregates
TES

_EXPLAIN_REWRIT  :  allow additional messages to be generated during
E_MODE              explain rewrite

_EXTENDED_PRUNI  :  do runtime pruning in iterator if set to TRUE
NG_ENABLED

_EXTERNAL_SCN_L  :  High delta SCN threshold in seconds
OGGING_THRESHOL
D_SECONDS

_EXTERNAL_SCN_R  :  external SCN rejection delta threshold in minutes
EJECTION_DELTA_
THRESHOLD_MINUT
ES

_EXTERNAL_SCN_R  :  Lag in hours between max allowed SCN and an external
EJECTION_THRESH     SCN
OLD_HOURS

_FAIRNESS_THRES  :  number of times to CR serve before downgrading lock
HOLD

_FAIR_REMOTE_CV  :  if TRUE enables fair remote convert
T

_FASTPIN_ENABLE  :  enable reference count based fast pins
_FAST_CURSOR_RE  :  use more memory in order to get faster execution
EXECUTE

_FAST_DUAL_ENAB  :  enable/disable fast dual
LED

_FAST_FULL_SCAN  :  enable/disable index fast full scan
_ENABLED

_FAST_INDEX_MAI  :  fast global index maintenance during PMOPs
NTENANCE

_FAST_PSBY_CONV  :  Enable fast physical standby conversion
ERSION

_FBDA_BUSY_PERC  :  flashback archiver busy percentage
ENTAGE

_FBDA_DEBUG_ASS  :  flashback archiver debug assert for testing
ERT

_FBDA_DEBUG_MOD  :  flashback archiver debug event for testing
E

_FBDA_GLOBAL_BS  :  flashback archiver global barrier scn lag
CN_LAG

_FBDA_INLINE_PE  :  flashback archiver inline percentage
RCENTAGE

_FBDA_RAC_INACT  :  flashback archiver rac inactive limit
IVE_LIMIT

_FG_IORM_SLAVES  :  ForeGround I/O slaves for IORM
_FG_LOG_CHECKSU  :  Checksum redo in foreground process
M

_FG_SYNC_SLEEP_  :  Log file sync via usleep
USECS

_FIC_ALGORITHM_  :  Set Frequent Itemset Counting Algorithm
SET

_FIC_AREA_SIZE   :  size of Frequent Itemset Counting work area
_FIC_MAX_LENGTH  :  Frequent Itemset Counting Maximum Itemset Length
_FIC_MIN_BMSIZE  :  Frequent Itemset Counting Minimum BITMAP Size
_FIC_OUTOFMEM_C  :  Frequent Itemset Counting Out Of Memory Candidates
ANDIDATES           Generation

_FIFTEENTH_SPAR  :  fifteenth spare parameter – integer
E_PARAMETER

_FIFTH_SPARE_PA  :  fifth spare parameter – integer
RAMETER

_FILEMAP_DIR     :  FILEMAP directory
_FILE_SIZE_INCR  :  Amount of file size increase increment, in bytes
EASE_INCREMENT

_FIRST_K_ROWS_D  :  enable the use of dynamic proration of join
YNAMIC_PRORATIO     cardinalities
N

_FIRST_SPARE_PA  :  first spare parameter – integer
RAMETER

_FIX_CONTROL     :  bug fix control parameter
_FLASHBACK_11.1  :  use 11.1 flashback block new optimization scheme
_BLOCK_NEW_OPT

_FLASHBACK_ALLO  :  Allow enabling flashback on noarchivelog database
W_NOARCHIVELOG

_FLASHBACK_ARCH  :  flashback archiver table partition size
IVER_PARTITION_
SIZE

_FLASHBACK_BARR  :  Flashback barrier interval in seconds
IER_INTERVAL

_FLASHBACK_COPY  :  Number of flashback copy latches
_LATCHES

_FLASHBACK_DATA  :  Run Flashback Database in test mode
BASE_TEST_ONLY

_FLASHBACK_DELE  :  Amount of flashback log (in MB) to delete in one
TE_CHUNK_MB         attempt

_FLASHBACK_DYNA  :  enable flashback enable code path
MIC_ENABLE

_FLASHBACK_DYNA  :  Simulate failures during dynamic enable
MIC_ENABLE_FAIL
URE

_FLASHBACK_ENAB  :  Flashback enable read ahead
LE_RA

_FLASHBACK_FORM  :  Chunk mega-bytes for formatting flashback logs using
AT_CHUNK_MB         sync write

_FLASHBACK_FORM  :  Chunk mega-bytes for formatting flashback logs using
AT_CHUNK_MB_DWR     delayed write
ITE

_FLASHBACK_FUZZ  :  Use flashback fuzzy barrier
Y_BARRIER

_FLASHBACK_GENE  :  flashback generation buffer size
RATION_BUFFER_S
IZE

_FLASHBACK_HINT  :  Flashback hint barrier percent
_BARRIER_PERCEN
T

_FLASHBACK_LOGF  :  flashback logfile enqueue timeout for opens
ILE_ENQUEUE_TIM
EOUT

_FLASHBACK_LOG_  :  Specify Flashback log I/O error behavior
IO_ERROR_BEHAVI
OR

_FLASHBACK_LOG_  :  Minimum flashback log size
MIN_SIZE

_FLASHBACK_LOG_  :  flashback log rac balance factor
RAC_BALANCE_FAC
TOR

_FLASHBACK_LOG_  :  Flashback log size
SIZE

_FLASHBACK_MARK  :  Enable flashback database marker cache
ER_CACHE_ENABLE
D

_FLASHBACK_MARK  :  Size of flashback database marker cache
ER_CACHE_SIZE

_FLASHBACK_MAX_  :  Maximum flashback log size in bytes (OS limit)
LOG_SIZE

_FLASHBACK_MAX_  :  Maximum number of flashback logs per flashback thread
N_LOG_PER_THREA
D

_FLASHBACK_MAX_  :  Maximum time span between standby recovery sync for
STANDBY_SYNC_SP     flashback
AN

_FLASHBACK_N_LO  :  Desired number of flashback logs per flashback thread
G_PER_THREAD

_FLASHBACK_PREP  :  Prepare Flashback logs in the background
ARE_LOG

_FLASHBACK_SIZE  :  Size new flashback logs based on average redo log size
_BASED_ON_REDO

_FLASHBACK_STAN  :  Flashback standby barrier interval in seconds
DBY_BARRIER_INT
ERVAL

_FLASHBACK_VALI  :  validate flashback pointers in controlfile for 11.2.0.2
DATE_CONTROLFIL     database
E

_FLASHBACK_VERB  :  Print verbose information about flashback database
OSE_INFO

_FLASHBACK_WRIT  :  Flashback writer loop limit before it returns
E_MAX_LOOP_LIMI
T

_FLUSH_ILM_STAT  :  flush ilm stats
S

_FLUSH_PLAN_IN_  :  Plan is being flushed from an AWR flush SQL
AWR_SQL

_FLUSH_REDO_TO_  :  Flush redo to standby test event parameter
STANDBY

_FLUSH_UNDO_AFT  :  if TRUE, flush undo buffers after TX recovery
ER_TX_RECOVERY

_FORCE_ARCH_COM  :  Archive Compress all newly created compressed tables
PRESS

_FORCE_DATEFOLD  :  force use of trunc for datefolding rewrite
_TRUNC

_FORCE_HASH_JOI  :  force hash join to spill to disk
N_SPILL

_FORCE_HSC_COMP  :  compress all newly created tables
RESS

_FORCE_LOGGING_  :  force logging during upgrade mode
IN_UPGRADE

_FORCE_OLTP_COM  :  OLTP Compress all newly created compressed tables
PRESS

_FORCE_OLTP_UPD  :  OLTP Compressed row optimization on update
ATE_OPT

_FORCE_RCV_INFO  :  Force recovery info ping to stdby
_PING

_FORCE_REWRITE_  :  control new query rewrite features
ENABLE

_FORCE_SLAVE_MA  :  Force slave mapping for intra partition loads
PPING_INTRA_PAR
T_LOADS

_FORCE_SYS_COMP  :  Sys compress
RESS

_FORCE_TEMPTABL  :  executes concatenation of rollups using temp tables
ES_FOR_GSETS

_FORCE_TMP_SEGM  :  Force tmp segment loads
ENT_LOADS

_FORWARDED_2PC_  :  auto-tune threshold for two-phase commit rate across
THRESHOLD           RAC instances

_FOURTEENTH_SPA  :  fourteenth spare parameter – integer
RE_PARAMETER

_FOURTH_SPARE_P  :  fourth spare parameter – integer
ARAMETER

_FRAME_CACHE_TI  :  number of seconds a cached frame page stay in cache.
ME

_FULL_DIAG_ON_R  :  rim nodes have full DIA* function
IM

_FULL_PWISE_JOI  :  enable full partition-wise join when TRUE
N_ENABLED

_FUSION_SECURIT  :  Fusion Security
Y

_GBY_HASH_AGGRE  :  enable group-by and aggregation using hash scheme
GATION_ENABLED

_GBY_ONEKEY_ENA  :  enable use of one comparison of all group by keys
BLED

_GCR_CPU_MIN_FR  :  minimum amount of free CPU to flag an anomaly
EE

_GCR_ENABLE_HIG  :  if TRUE, GCR may kill foregrounds under high load
H_CPU_KILL

_GCR_ENABLE_HIG  :  if TRUE, GCR may enable a RM plan under high load
H_CPU_RM

_GCR_ENABLE_HIG  :  if TRUE, GCR may boost bg priority under high load
H_CPU_RT

_GCR_ENABLE_HIG  :  if TRUE, GCR may kill foregrounds under high memory
H_MEMORY_KILL       load

_GCR_ENABLE_NEW  :  if FALSE, revert to old drm load metric
_DRM_CHECK

_GCR_ENABLE_STA  :  if FALSE, revert to old cpu load metric
TISTICAL_CPU_CH
ECK

_GCR_HIGH_CPU_T  :  minimum amount of CPU process must consume to be kill
HRESHOLD            target

_GCR_HIGH_MEMOR  :  minimum amount of Memory process must consume to be
Y_THRESHOLD         kill target

_GCR_MAX_RT_PRO  :  maximum number of RT DLM processes allowed by GCR
CS

_GCR_MEM_MIN_FR  :  minimum amount of free memory to flag an anomaly
EE

_GCR_USE_CSS     :  if FALSE, GCR wont register with CSS nor use any CSS
feature

_GCS_DISABLE_RE  :  disable remote client/shadow handles
MOTE_HANDLES

_GCS_DISABLE_SK  :  if TRUE, disable skip close optimization in remastering
IP_CLOSE_REMAST
ERING

_GCS_DISABLE_SW  :  if TRUE, disable switching to local role with a writer
ITCH_ROLE_WITH_
WRITER

_GCS_FAST_RECON  :  if TRUE, enable fast reconfiguration for gcs locks
FIG

_GCS_LATCHES     :  number of gcs resource hash latches to be allocated per
LMS process

_GCS_MIN_SLAVES  :  if non zero, it enables the minimum number of gcs
slaves

_GCS_PKEY_HISTO  :  number of pkey remastering history
RY

_GCS_PROCESS_IN  :  if TRUE, process gcs requests during instance recovery
_RECOVERY

_GCS_RESERVED_R  :  allocate the number of reserved resources in
ESOURCES            reconfiguration

_GCS_RESERVED_S  :  allocate the number of reserved shadows in
HADOWS              reconfiguration

_GCS_RESOURCES   :  number of gcs resources to be allocated
_GCS_RES_HASH_B  :  number of gcs resource hash buckets to be allocated
UCKETS

_GCS_RES_PER_BU  :  number of gcs resource per hash bucket
CKET

_GCS_SHADOW_LOC  :  number of pcm shadow locks to be allocated
KS

_GCS_TESTING     :  GCS testing parameter
_GC_AFFINITY_AC  :  if TRUE, save the time we acquired an affinity lock
QUIRE_TIME

_GC_AFFINITY_LO  :  if TRUE, enable object affinity
CKING

_GC_AFFINITY_LO  :  if TRUE, get affinity locks
CKS

_GC_AFFINITY_RA  :  dynamic object affinity ratio
TIO

_GC_ASYNC_SEND   :  send blocks asynchronously
_GC_BYPASS_READ  :  if TRUE, modifications bypass readers
ERS

_GC_CHECK_BSCN   :  if TRUE, check for stale blocks
_GC_COALESCE_RE  :  if TRUE, coalesce recovery reads
COVERY_READS

_GC_CPU_TIME     :  if TRUE, record the gc cpu time
_GC_CR_SERVER_R  :  if TRUE, cr server waits for a read to complete
EAD_WAIT

_GC_DEFER_PING_  :  if TRUE, restrict deferred ping to index blocks only
INDEX_ONLY

_GC_DEFER_TIME   :  how long to defer pings for hot buffers in milliseconds
_GC_DELTA_PUSH_  :  if delta >= K bytes, compress before push
COMPRESSION

_GC_DELTA_PUSH_  :  max delta level for delta push
MAX_LEVEL

_GC_DELTA_PUSH_  :  objects which use delta push
OBJECTS

_GC_DISABLE_S_L  :  if TRUE, disable S lock BRR ping check for lost write
OCK_BRR_PING_CH     protect
ECK

_GC_DOWN_CONVER  :  if TRUE, down-convert lock after recovery
T_AFTER_KEEP

_GC_ELEMENT_PER  :  global cache element percent
CENT

_GC_ESCALATE_BI  :  if TRUE, escalates create a bid
D

_GC_FG_MERGE     :  if TRUE, merge pi buffers in the foreground
_GC_FG_SPIN_TIM  :  foreground msgq spin time
E

_GC_FLUSH_DURIN  :  if TRUE, flush during affinity
G_AFFINITY

_GC_FUSION_COMP  :  compress fusion blocks if there is free space
RESSION

_GC_GLOBAL_CHEC  :  if TRUE, enable global checkpoint scn
KPOINT_SCN

_GC_GLOBAL_CPU   :  global cpu checks
_GC_GLOBAL_LRU   :  turn global lru off, make it automatic, or turn it on
_GC_GLOBAL_LRU_  :  global lru touch count
TOUCH_COUNT

_GC_GLOBAL_LRU_  :  global lru touch time in seconds
TOUCH_TIME

_GC_INTEGRITY_C  :  set the integrity check level
HECKS

_GC_KEEP_RECOVE  :  if TRUE, make single instance crash recovery buffers
RY_BUFFERS          current

_GC_LATCHES      :  number of latches per LMS process
_GC_LOG_FLUSH    :  if TRUE, flush redo log before a current block transfer
_GC_LONG_QUERY_  :  threshold for long running query
THRESHOLD

_GC_MAXIMUM_BID  :  maximum number of bids which can be prepared
S

_GC_MAX_DOWNCVT  :  maximum downconverts to process at one time
_GC_NO_FAIRNESS  :  if TRUE, no fairness if we serve a clone
_FOR_CLONES

_GC_OBJECT_QUEU  :  maximum length for an object queue
E_MAX_LENGTH

_GC_OVERRIDE_FO  :  if TRUE, try to override force-cr requests
RCE_CR

_GC_PERSISTENT_  :  if TRUE, enable persistent read-mostly locking
READ_MOSTLY

_GC_POLICY_MINI  :  dynamic object policy minimum activity per minute
MUM

_GC_POLICY_TIME  :  how often to make object policy decisions in minutes
_GC_READ_MOSTLY  :  if TRUE, optimize flushes for read mostly objects
_FLUSH_CHECK

_GC_READ_MOSTLY  :  if TRUE, enable read-mostly locking
_LOCKING

_GC_SANITY_CHEC  :  if TRUE, sanity check CR buffers
K_CR_BUFFERS

_GC_SAVE_CLEANO  :  if TRUE, save cleanout to apply later
UT

_GC_SPLIT_FLUSH  :  if TRUE, flush index split redo before rejecting bast
_GC_STATISTICS   :  if TRUE, kcl statistics are maintained
_GC_TEMP_AFFINI  :  if TRUE, enable global temporary affinity
TY

_GC_TRANSFER_RA  :  dynamic object read-mostly transfer ratio
TIO

_GC_UNDO_AFFINI  :  if TRUE, enable undo affinity
TY

_GC_UNDO_BLOCK_  :  if TRUE, enable undo block disk reads
DISK_READS

_GC_VECTOR_READ  :  if TRUE, vector read current buffers
_GENERALIZED_PR  :  controls extensions to partition pruning for general
UNING_ENABLED       predicates

_GES_DD_DEBUG    :  if 1 or higher enables GES deadlock detection debug
diagnostics

_GES_DEFAULT_LM  :  default lmds for enqueue hashing
DS

_GES_DESIGNATED  :  designated master for GES and GCS resources
_MASTER

_GES_DIAGNOSTIC  :  if TRUE enables GES diagnostics
S

_GES_DIAGNOSTIC  :  systemstate level on global enqueue diagnostics blocked
S_ASM_DUMP_LEVE     by ASM
L

_GES_DIRECT_FRE  :  if TRUE, free each resource directly to the freelist
E

_GES_DIRECT_FRE  :  string of resource types(s) to directly free to the
E_RES_TYPE          freelist

_GES_DUMP_OPEN_  :  if TRUE, dump open locks for the LCK process during
LOCKS               shutdown

_GES_FGGL        :  DLM fg grant lock on/off
_GES_FREEABLE_R  :  if TRUE, free dynamic resource chunks which are
ES_CHUNK_FREE       freeable

_GES_FREEABLE_R  :  time interval for freeing freeable dynamic resource
ES_CHUNK_FREE_I     chunks
NTERVAL

_GES_GATHER_RES  :  if TRUE, gather resource reuse statistics
_REUSE_STATS

_GES_HASH_GROUP  :  enqueue hash table groups
S

_GES_HEALTH_CHE  :  if greater than 0 enables GES system health check
CK

_GES_LMD_MAPPIN  :  enqueue to lmd mapping
G

_GES_NRES_DIVID  :  how to divide number of enqueue resources among hash
E                   tables

_GES_NUM_BLOCKE  :  number of blockers to be killed for hang resolution
RS_TO_KILL

_GES_RESOURCE_M  :  enable different level of ges res memory optimization
EMORY_OPT

_GES_SERVER_PRO  :  number of background global enqueue server processes
CESSES

_GLOBALINDEX_PN  :  enables filter for global index with partition extended
UM_FILTER_ENABL     syntax
ED

_GLOBAL_HANG_AN  :  the interval at which global hang analysis is run
ALYSIS_INTERVAL
_SECS

_GRANT_SECURE_R  :  Disallow granting of SR to NSR
OLE

_GROUPBY_NOPUSH  :  groupby nopushdown cut ratio
DOWN_CUT_RATIO

_GROUPBY_ORDERB  :  groupby/orderby don’t combine threshold
Y_COMBINE

_GSM             :  GSM descriptions
_GSM_CONFIG_VER  :  version of gsm config
S

_GSM_CPU_THRESH  :  CPU busy threshold
_GSM_DRV_INTERV  :  metric derived values interval
AL

_GSM_MAX_INSTAN  :  maximum number of instances per database in gsm cloud
CES_PER_DB

_GSM_MAX_NUM_RE  :  maximum number of regions in gsm cloud
GIONS

_GSM_REGION_LIS  :  List of GSM Regions
T

_GSM_SRLAT_THRE  :  Single block read latency threshold
SH

_GSM_THRESH_RES  :  threshold resource percentage
PCT

_GSM_THRESH_ZON  :  threshold zone
E

_GS_ANTI_SEMI_J  :  enable anti/semi join for the GS query
OIN_ALLOWED

_GWM_SPARE1      :  gsm spare 1
_GWM_SPARE2      :  gsm spare 2
_GWM_SPARE3      :  gsm spare 3
_HANG_ANALYSIS_  :  hang analysis num call stacks
NUM_CALL_STACKS

_HANG_BASE_FILE  :  Number of trace files for the normal base trace file
_COUNT

_HANG_BASE_FILE  :  File space limit for current normal base trace file
_SPACE_LIMIT

_HANG_BOOL_SPAR  :  Hang Management 1
E1

_HANG_CROSS_BOU  :  Hang Management Cross Boundary detection
NDARY_HANG_DETE
CTION_ENABLED

_HANG_DELAY_RES  :  Hang Management delays hang resolution for library
OLUTION_FOR_LIB     cache
CACHE

_HANG_DETECTION  :  Hang Management detection
_ENABLED

_HANG_DETECTION  :  Hang Management detection interval in seconds
_INTERVAL

_HANG_HANG_ANAL  :  if TRUE hang manager outputs hang analysis hang chains
YZE_OUTPUT_HANG
_CHAINS

_HANG_HILOAD_PR  :  Hang Management high load or promoted ignored hang
OMOTED_IGNORED_     count
HANG_COUNT

_HANG_HIPRIOR_S  :  Hang Management high priority session attribute list
ESSION_ATTRIBUT
E_LIST

_HANG_IGNORED_H  :  Time in seconds ignored hangs must persist after
ANGS_INTERVAL       verification

_HANG_IGNORED_H  :  Hang Management ignored hang count
ANG_COUNT

_HANG_INT_SPARE  :  Hang Management 2
2

_HANG_LOG_VERIF  :  Hang Management log verified hangs to alert log
IED_HANGS_TO_AL
ERT

_HANG_LONG_WAIT  :  Long session wait time threshold in seconds
_TIME_THRESHOLD

_HANG_LWS_FILE_  :  Number of trace files for long waiting sessions
COUNT

_HANG_LWS_FILE_  :  File space limit for current long waiting session trace
SPACE_LIMIT         file

_HANG_MONITOR_A  :  Time in seconds ignored hangs must persist after
RCHIVING_RELATE     verification
D_HANG_INTERVAL

_HANG_MSG_CHECK  :  enable hang graph message checksum
SUM_ENABLED

_HANG_RESOLUTIO  :  Hang Management hang resolution allow archiving issue
N_ALLOW_ARCHIVI     termination
NG_ISSUE_TERMIN
ATION

_HANG_RESOLUTIO  :  Hang Management hang resolution confidence promotion
N_CONFIDENCE_PR
OMOTION

_HANG_RESOLUTIO  :  Hang Management hang resolution global hang confidence
N_GLOBAL_HANG_C     promotion
ONFIDENCE_PROMO
TION

_HANG_RESOLUTIO  :  Hang Management hang resolution policy
N_POLICY

_HANG_RESOLUTIO  :  Hang Management hang resolution promote process
N_PROMOTE_PROCE     termination
SS_TERMINATION

_HANG_RESOLUTIO  :  Hang Management hang resolution scope
N_SCOPE

_HANG_SIGNATURE  :  Hang Signature List matched output frequency
_LIST_MATCH_OUT
PUT_FREQUENCY

_HANG_STATISTIC  :  Hang Management statistics collection interval in
S_COLLECTION_IN     seconds
TERVAL

_HANG_STATISTIC  :  Hang Management statistics collection moving average
S_COLLECTION_MA     alpha
_ALPHA

_HANG_STATISTIC  :  Hang Management statistics high IO percentage threshold
S_HIGH_IO_PERCE
NTAGE_THRESHOLD

_HANG_TERMINATE  :  Hang Management terminates sessions allowing replay
_SESSION_REPLAY
_ENABLED

_HANG_VERIFICAT  :  Hang Management verification interval in seconds
ION_INTERVAL

_HARD_PROTECTIO  :  if TRUE enable H.A.R.D specific format changes
N

_HASHOPS_PREFET  :  maximum no of rows whose relevant memory locations are
CH_SIZE             prefetched

_HASH_JOIN_ENAB  :  enable/disable hash join
LED

_HASH_MULTIBLOC  :  number of blocks hash join will read/write at once
K_IO_COUNT

_HB_REDO_MSG_IN  :  BOC HB redo message interval in ms
TERVAL

_HEATMAP_FORMAT  :  heatmap related – to be used by oracle dev only
_1BLOCK

_HEATMAP_MIN_MA  :  Internal testing only
XSIZE

_HEUR_DEADLOCK_  :  the heuristic wait time per node for deadlock
RESOLUTION_SECS     resolution

_HIGHRES_DRIFT_  :  allowed highres timer drift for VKTM
ALLOWED_SEC

_HIGHTHRESHOLD_  :  high threshold undo_retention in seconds
UNDORETENTION

_HIGH_PRIORITY_  :  High Priority Process Name Mask
PROCESSES

_HIGH_SERVER_TH  :  high server thresholds
RESHOLD

_HJ_BIT_FILTER_  :  hash-join bit filtering threshold (0 always enabled)
THRESHOLD

_HM_ANALYSIS_OR  :  the oradebug system state level for hang manager hang
ADEBUG_SYS_DUMP     analysis
_LEVEL

_HM_XM_ENABLED   :  If TRUE, DIA0 allows message exchanges across DB/ASM
boundary

_HWM_SYNC_THRES  :  HWM synchronization threshold in percentage
HOLD

_IDLE_SESSION_K  :  enables or disables resource manager session idle limit
ILL_ENABLED         checks

_IDL_CONVENTION  :  enable conventional index maintenance for insert direct
AL_INDEX_MAINTE     load
NANCE

_IDXRB_ROWINCR   :  proportionality constant for dop vs. rows in index
rebuild

_IGNORE_DESC_IN  :  ignore DESC in indexes, sort those columns ascending
_INDEX              anyhow

_IGNORE_EDITION  :  ignore schema’s edition-enabled status during EV
_ENABLED_FOR_EV     creation
_CREATION

_IGNORE_FG_DEPS  :  ignore fine-grain dependencies during invalidation
_ILMFLUSH_STAT_  :  ILM flush statistics limit – Internal testing only
LIMIT

_ILMSET_STAT_LI  :  ILM set statistics limit – Internal testing only
MIT

_ILMSTAT_MEMLIM  :  Percentage of shared pool for use by ILM Statistics
IT

_ILM_FILTER_TIM  :  Upper filter time for ILM block compression
E

_ILM_FILTER_TIM  :  Lower filter time for ILM block compression
E_LOWER

_ILM_MEM_LIMIT   :  percentage of the max shared pool heat-map can use –
internal

_ILM_POLICY_NAM  :  User specified ILM policy name
E

_IMAGE_REDO_GEN  :  Image redo generation delay in centi-seconds (direct
_DELAY              write mode)

_IMMEDIATE_COMM  :  if TRUE, propagate commit SCN immediately
IT_PROPAGATION

_IMPROVED_OUTER  :  improved outer-join cardinality calculation
JOIN_CARD

_IMPROVED_ROW_L  :  enable the improvements for computing the average row
ENGTH_ENABLED       length

_IMR_ACTIVE      :  Activate Instance Membership Recovery feature
_IMR_AVOID_DOUB  :  Avoid device voting for CSS reconfig during IMR
LE_VOTING

_IMR_CONTROLFIL  :  IMR controlfile access wait time in seconds
E_ACCESS_WAIT_T
IME

_IMR_DEVICE_TYP  :  Type of device to be used by IMR
E

_IMR_DISKVOTE_I  :  IMR disk voting implementation method
MPLEMENTATION

_IMR_DISK_VOTIN  :  Maximum wait for IMR disk voting (seconds)
G_INTERVAL

_IMR_EVICTED_ME  :  IMR issue evicted member kill after a wait
MBER_KILL

_IMR_EVICTED_ME  :  IMR evicted member kill wait time in seconds
MBER_KILL_WAIT

_IMR_EXTRA_RECO  :  Extra reconfiguration wait in seconds
NFIG_WAIT

_IMR_HIGHLOAD_T  :  IMR system highload threshold
HRESHOLD

_IMR_MAX_RECONF  :  Maximum Reconfiguration delay (seconds)
IG_DELAY

_IMR_RR_HOLDER_  :  IMR max time instance is allowed to hold RR lock in
KILL_TIME           seconds

_IMR_SPLITBRAIN  :  Maximum wait for split-brain resolution (seconds)
_RES_WAIT

_IMR_SYSTEMLOAD  :  Perform the system load check during IMR
_CHECK

_IMU_POOLS       :  in memory undo pools
_INCREMENTAL_RE  :  minimum number of writes for incremental recovery ckpt
COVERY_CKPT_MIN     every second
_BATCH

_INDEX_JOIN_ENA  :  enable the use of index joins
BLED

_INDEX_LOAD_BUF  :  index load buf oltp sacrifice pct
_OLTP_SACRIFICE
_PCT

_INDEX_LOAD_BUF  :  index load buf and comp oltp under-estimation pct
_OLTP_UNDER_PCT

_INDEX_MAX_INC_  :  max itl expand percentage soft limit during index
TRANS_PCT           insert

_INDEX_PARTITIO  :  Enables large extent allocation for partitioned indices
N_LARGE_EXTENTS

_INDEX_PREFETCH  :  index prefetching factor
_FACTOR

_INDEX_SCAN_CHE  :  check and skip corrupt blocks during index scans
CK_SKIP_CORRUPT

_INDEX_SCAN_CHE  :  check stopkey during index range scans
CK_STOPKEY

_INIT_GRANULE_I  :  number of granules to process for deferred cache
NTERVAL

_INIT_SQL_FILE   :  File containing SQL statements to execute upon database
creation

_INJECT_STARTUP  :  inject fault in the startup code
_FAULT

_INLINE_SQL_IN_  :  inline SQL in PL/SQL
PLSQL

_INPLACE_UPDATE  :  inplace update retry for ora1551
_RETRY

_INQUIRY_RETRY_  :  if greater than 0 enables inquiry retry after specified
INTERVAL            interval

_INSERT_ENABLE_  :  during parallel inserts high water marks are brokered
HWM_BROKERED

_INST_LOCKING_P  :  period an instance can retain a newly acquired level1
ERIOD               bitmap

_INTERCONNECT_C  :  if TRUE, checksum interconnect blocks
HECKSUM

_INTRAPART_PDML  :  Enable intra-partition updates/deletes
_ENABLED

_INTRAPART_PDML  :  Enable intra-partition updates/deletes with random
_RANDOMLOCAL_EN     local dist
ABLED

_IN_MEMORY_TBS_  :  FALSE – disable fast path for alter tablespace read
SEARCH              only

_IN_MEMORY_UNDO  :  Make in memory undo for top level transactions
_IOCALIBRATE_IN  :  iocalibrate init I/Os per process
IT_IOS

_IOCALIBRATE_MA  :  iocalibrate max I/Os per process
X_IOS

_IOQ_FANIN_MULT  :  IOQ miss count before a miss exception
IPLIER

_IORM_TOUT       :  IORM scheduler timeout value in msec
_IOR_SERIALIZE_  :  inject fault in the ior serialize code
FAULT

_IOSLAVE_BATCH_  :  Per attempt IOs picked
COUNT

_IOSLAVE_ISSUE_  :  IOs issued before completion check
COUNT

_IO_INTERNAL_TE  :  I/O internal testing parameter
ST

_IO_OSD_PARAM    :  OSD specific parameter
_IO_OUTLIER_THR  :  Latency threshold for io_outlier table
ESHOLD

_IO_RESOURCE_MA  :  io resource manager always on
NAGER_ALWAYS_ON

_IO_SHARED_POOL  :  Size of I/O buffer pool from SGA
_SIZE

_IO_SLAVES_DISA  :  Do not use I/O slaves
BLED

_IO_STATISTICS   :  if TRUE, ksfd I/O statistics are collected
_IPC_FAIL_NETWO  :  Simulate cluster network failer
RK

_IPC_TEST_FAILO  :  Test transparent cluster network failover
VER

_IPC_TEST_MULT_  :  simulate multiple cluster networks
NETS

_IPDDB_ENABLE    :  Enable IPD/DB data collection
_JOB_QUEUE_INTE  :  Wakeup interval in seconds for job queue co-ordinator
RVAL

_K2Q_LATCHES     :  number of k2q latches
_KA_ALLOW_REENA  :  reenability of kernel accelerator service after disable
BLE

_KA_COMPATIBILI  :  kernel accelerator compatibility operation requirement
TY_REQUIREMENT

_KA_DOORBELL     :  kernel accelerator doorbell mode
_KA_LOCKS_PER_S  :  locks per sector in kernel accelerator
ECTOR

_KA_MODE         :  kernel accelerator mode
_KA_MSG_REAP_CO  :  maximum number of KA messages to receive and process
UNT                 per wait

_KA_PBATCH_MESS  :  kernel accelerator perform pbatch messages
AGES

_KCFIS_AUTOMEM_  :  Set auto memory management control for kcfis memory
LEVEL               allocation

_KCFIS_BLOCK_DU  :  Smart IO block dump level
MP_LEVEL

_KCFIS_CACHING_  :  enable kcfis intra-scan session caching
ENABLED

_KCFIS_CELLOFLS  :  Enable offload server usage for passthru operations
RV_PASSTHRU_ENA
BLED

_KCFIS_CELLOFLS  :  Enable offload server usage for offload operations
RV_USAGE_ENABLE
D

_KCFIS_CELL_PAS  :  Allow dataonly passthru for smart scan
STHRU_DATAONLY

_KCFIS_CELL_PAS  :  Do not perform smart IO filtering on the cell
STHRU_ENABLED

_KCFIS_CELL_PAS  :  Enable automatic passthru mode when cell CPU util is
STHRU_FROMCPU_E     too high
NABLED

_KCFIS_CONTROL1  :  Kcfis control1
_KCFIS_CONTROL2  :  Kcfis control2
_KCFIS_CONTROL3  :  Kcfis control3
_KCFIS_CONTROL4  :  Kcfis control4
_KCFIS_CONTROL5  :  Kcfis control5
_KCFIS_CONTROL6  :  Kcfis control6
_KCFIS_DISABLE_  :  Don’t use platform-specific decryption on the storage
PLATFORM_DECRYP     cell
TION

_KCFIS_DUMP_COR  :  Dump any corrupt blocks found during smart IO
RUPT_BLOCK

_KCFIS_FAST_RES  :  Enable smart scan optimization for fast response (first
PONSE_ENABLED       rows)

_KCFIS_FAST_RES  :  Fast response – The size of the first IO in logical
PONSE_INITIOSIZ     blocks
E

_KCFIS_FAST_RES  :  Fast response – (next IO size = current IO size * this
PONSE_IOSIZEMUL     parameter)
T

_KCFIS_FAST_RES  :  Fast response – the number of IOs after which smartIO
PONSE_THRESHOLD     is used

_KCFIS_FAULT_CO  :  Fault Injection Control
NTROL

_KCFIS_IOREQS_T  :  Enable Smart IO requests throttling
HROTTLE_ENABLED

_KCFIS_IO_PREFE  :  Smart IO prefetch size for a cell
TCH_SIZE

_KCFIS_KEPT_IN_  :  Enable usage of cellsrv flash cache for kept objects
CELLFC_ENABLED

_KCFIS_LARGE_PA  :  enable large payload to be passed to cellsrv
YLOAD_ENABLED

_KCFIS_MAX_CACH  :  Sets the maximum number of kcfis sessions cached
ED_SESSIONS

_KCFIS_MAX_OUT_  :  Sets the maximum number of outstanding translations in
TRANSLATIONS        kcfis

_KCFIS_NONKEPT_  :  Enable use of cellsrv flash cache for non-kept objects
IN_CELLFC_ENABL
ED

_KCFIS_OSS_IO_S  :  KCFIS OSS I/O size
IZE

_KCFIS_QM_PRIOR  :  Prioritize Quaranitine Manager system plan
ITIZE_SYS_PLAN

_KCFIS_QM_USER_  :  Quaranitine Manager user plan name
PLAN_NAME

_KCFIS_RDBMS_BL  :  Use block IO instead of smart IO in the smart IO module
OCKIO_ENABLED       on RDBMS

_KCFIS_READ_BUF  :  KCFIS Read Buffer (per session) memory limit in bytes
FER_LIMIT

_KCFIS_SPAWN_DE  :  Decides whether to spawn the debugger at kcfis
BUGGER              initialize

_KCFIS_STATS_LE  :  sets kcfis stats level
VEL

_KCFIS_STORAGEI  :  Debug mode for storage index on the cell
DX_DIAG_MODE

_KCFIS_STORAGEI  :  Don’t use storage index optimization on the storage
DX_DISABLED         cell

_KCFIS_TEST_CON  :  kcfis tst control1
TROL1

_KCFIS_TRACE_BU  :  KCFIS tracing bucket size in bytes
CKET_SIZE

_KCL_COMMIT      :  if TRUE, call kjbcommit
_KCL_CONSERVATI  :  if TRUE, conservatively log flush before CR serving
VE_LOG_FLUSH

_KCL_DEBUG       :  if TRUE, record le history
_KCL_INDEX_SPLI  :  if TRUE, reject pings on blocks in middle of a split
T

_KDBL_ENABLE_PO  :  allocate dbas after populating data buffers
ST_ALLOCATION

_KDIC_SEGARR_SZ  :  size threshold for segmented arrays for
seg_info_kdicctx

_KDIS_REJECT_LE  :  b+tree level to enable rejection limit
VEL

_KDIS_REJECT_LI  :  #block rejections in space reclamation before segment
MIT                 extension

_KDIS_REJECT_OP  :  enable rejection heuristic for branch splits
S

_KDIZOLTP_UNCOM  :  kdizoltp uncomp sentinal frequency
PSENTINAL_FREQ

_KDI_AVOID_BLOC  :  avoid index block checking on sensitive opcodes
K_CHECKING

_KDLF_READ_FLAG  :  kdlf read flag
_KDLI_ALLOW_COR  :  allow corrupt filesystem_logging data blocks during
RUPT                read/write

_KDLI_BUFFER_IN  :  use buffer injection for CACHE [NO]LOGGING lobs
JECT

_KDLI_CACHEABLE  :  minimum lob length for inode cacheability
_LENGTH

_KDLI_CACHE_INO  :  cache inode state across calls
DE

_KDLI_CACHE_REA  :  minimum lob size for cache->nocache read (0 disables
D_THRESHOLD         heuristic)

_KDLI_CACHE_SIZ  :  maximum #entries in inode cache
E

_KDLI_CACHE_VER  :  verify cached inode via deserialization
IFY

_KDLI_CACHE_WRI  :  minimum lob size for cache->nocache write (0 disables
TE_THRESHOLD        heuristic)

_KDLI_CHECKPOIN  :  do not invalidate cache buffers after write
T_FLUSH

_KDLI_DBC        :  override db_block_checking setting for securefiles
_KDLI_DELAY_FLU  :  delay flushing cache writes to direct-write lobs
SHES

_KDLI_DESCN_ADJ  :  coalesce extents with deallocation scn adjustment
_KDLI_FLUSH_CAC  :  flush cache-reads data blocks after load
HE_READS

_KDLI_FLUSH_INJ  :  flush injected buffers of CACHE NOLOGGING lobs before
ECTIONS             commit

_KDLI_FORCE_CR   :  force CR when reading data blocks of direct-write lobs
_KDLI_FORCE_CR_  :  force CR when reading metadata blocks of direct-write
META                lobs

_KDLI_FORCE_STO  :  force storage settings for all lobs
RAGE

_KDLI_FULL_READ  :  maximum lob size for full readahead
AHEAD_THRESHOLD

_KDLI_INJECT_AS  :  inject asserts into the inode
SERT

_KDLI_INJECT_BA  :  buffer injection batch size [1, KCBNEWMAX]
TCH

_KDLI_INJECT_CR  :  inject crashes into the inode
ASH

_KDLI_INLINE_XF  :  allow inline transformed lobs
M

_KDLI_INODE_PRE  :  inline inode evolution preference (data, headless, lhb)
FERENCE

_KDLI_INPLACE_O  :  maximum inplace overwrite size (> chunksize)
VERWRITE

_KDLI_ITREE_ENT  :  #entries in lhb/itree blocks (for testing only)
RIES

_KDLI_MEMORY_PR  :  trace accesses to inode memory outside kdli API
OTECT               functions

_KDLI_MTS_SO     :  use state objects in shared server for asyncIO
pipelines

_KDLI_ONEBLK     :  allocate chunks as single blocks
_KDLI_PREALLOCA  :  preallocation mode for lob growth
TION_MODE

_KDLI_PREALLOCA  :  percentage preallocation [0 .. inf) for lob growth
TION_PCT

_KDLI_RALC_LENG  :  lob length threshold to trigger rounded allocations
TH

_KDLI_RALC_ROUN  :  rounding granularity for rounded allocations
DING

_KDLI_RCI_LOBMA  :  #entries in RCI lobmap before migration to lhb
P_ENTRIES

_KDLI_READAHEAD  :  shared/cached IO readahead limit
_LIMIT

_KDLI_READAHEAD  :  shared/cached IO readahead strategy
_STRATEGY

_KDLI_RECENT_SC  :  use recent (not dependent) scns for block
N                   format/allocation

_KDLI_RESHAPE    :  reshape an inode to inline or headless on length
truncation

_KDLI_SAFE_CALL  :  invoke inode read/write callbacks safely
BACKS

_KDLI_SIO_ASYNC  :  asynchronous shared IO
_KDLI_SIO_BACKO  :  use exponential backoff when attempting SIOP
FF                  allocations

_KDLI_SIO_BPS    :  maximum blocks per IO slot
_KDLI_SIO_DOP    :  degree-of-parallelism in the SIO keep pool
_KDLI_SIO_FBWRI  :  percentage of buffer used for direct writes in
TE_PCT              flashback-db

_KDLI_SIO_FGIO   :  reap asynchronous IO in the foreground
_KDLI_SIO_FILEO  :  shared IO fileopen mode: datasync vs nodatasync vs
PEN                 async

_KDLI_SIO_FLUSH  :  enable shared IO pool operations
_KDLI_SIO_FREE   :  free IO buffers when not in active use
_KDLI_SIO_MIN_R  :  shared IO pool read threshold
EAD

_KDLI_SIO_MIN_W  :  shared IO pool write threshold
RITE

_KDLI_SIO_NBUFS  :  maximum #IO buffers to allocate per session
_KDLI_SIO_NIODS  :  maximum #IO descriptors to allocate per session
_KDLI_SIO_ON     :  enable shared IO pool operations
_KDLI_SIO_PGA    :  use PGA allocations for direct IO
_KDLI_SIO_PGA_T  :  PGA allocations come from toplevel PGA heap
OP

_KDLI_SIO_STRAT  :  shared IO strategy: block vs. extent
EGY

_KDLI_SIO_WRITE  :  percentage of buffer used for direct writes
_PCT

_KDLI_SMALL_CAC  :  size limit of small inode cache
HE_LIMIT

_KDLI_SORT_DBAS  :  sort dbas during chunkification
_KDLI_SPACE_CAC  :  maximum size of the space cache in #blocks
HE_LIMIT

_KDLI_SQUEEZE    :  compact lobmap extents with contiguous dbas
_KDLI_STOP_BSZ   :  undocumented parameter for internal use only
_KDLI_STOP_DBA   :  undocumented parameter for internal use only
_KDLI_STOP_FSZ   :  undocumented parameter for internal use only
_KDLI_STOP_NIO   :  undocumented parameter for internal use only
_KDLI_STOP_TSN   :  undocumented parameter for internal use only
_KDLI_TIMER_DMP  :  dump inode timers on session termination
_KDLI_TIMER_TRC  :  trace inode timers to uts/tracefile
_KDLI_TRACE      :  inode trace level
_KDLI_VLL_DIREC  :  use skip-navigation and direct-positioning in
T                   vll-domain

_KDLU_MAX_BUCKE  :  UTS kdlu bucket size
T_SIZE

_KDLU_MAX_BUCKE  :  UTS kdlu bucket size for mts
T_SIZE_MTS

_KDLU_TRACE_LAY  :  UTS kdlu per-layer trace level
ER

_KDLU_TRACE_SYS  :  UTS system dump
TEM

_KDLWP_FLUSH_TH  :  WGC flush threshold in bytes
RESHOLD

_KDLW_ENABLE_KS  :  enable ksi locking for lobs
I_LOCKING

_KDLW_ENABLE_WR  :  enable lob write gathering for sql txns
ITE_GATHERING

_KDLXP_CMP_SUBU  :  size of compression sub-unit in bytes
NIT_SIZE

_KDLXP_DEDUP_FL  :  deduplication flush threshold in bytes
USH_THRESHOLD

_KDLXP_DEDUP_HA  :  secure hash algorithm for deduplication – only on
SH_ALGO             SecureFiles

_KDLXP_DEDUP_IN  :  deduplication pct size increase by which inlining
L_PCTFREE           avoided

_KDLXP_DEDUP_PR  :  deduplication prefix hash threshold in bytes
EFIX_THRESHOLD

_KDLXP_DEDUP_WA  :  deduplication length to allow write-append
PP_LEN

_KDLXP_LOBCMPAD  :  enable adaptive compression – only on SecureFiles
P

_KDLXP_LOBCMPLE  :  Default securefile compression
VEL

_KDLXP_LOBCMPRC  :  Default securefile compression map version
IVER

_KDLXP_LOBCOMPR  :  enable lob compression – only on SecureFiles
ESS

_KDLXP_LOBDEDUP  :  enable lob deduplication – only on SecureFiles
LICATE

_KDLXP_LOBDEDUP  :  enable deduplicate validate – only on SecureFiles
VALIDATE

_KDLXP_LOBENCRY  :  enable lob encryption – only on SecureFiles
PT

_KDLXP_MINCMP    :  minimum comp ratio in pct – only on SecureFiles
_KDLXP_MINCMPLE  :  minimum loblen to compress – only on SecureFiles
N

_KDLXP_MINXFM_S  :  minimum transformation size in bytes
IZE

_KDLXP_SPARE1    :  deduplication spare 1
_KDLXP_UNCMP     :  lob data uncompressed – only on SecureFiles
_KDLXP_XFMCACHE  :  enable xfm cache – only on SecureFiles
_KDTGSP_RETRIES  :  max number of retries in kdtgsp if space returns same
block

_KDT_BUFFERING   :  control kdt buffering for conventional inserts
_KDU_ARRAY_DEPT  :  array update retry recursion depth limits
H

_KDZ_HCC_FLAGS   :  Miscellaneous HCC flags
_KDZ_HCC_TRACK_  :  Enable rowid tracking during updates
UPD_RIDS

_KDZ_PRED_NROWS  :  Number of rows to predicate at a time in kdzt
_KDZ_PROJ_NROWS  :  Number of rows to project at a time in kdzt
_KD_SYMTAB_CHK   :  enable or disable symbol table integrity block check
_KEBM_NSTRIKES   :  kebm # strikes to auto suspend an action
_KEBM_SUSPENSIO  :  kebm auto suspension time in seconds
N_TIME

_KECAP_CACHE_SI  :  Workload Replay INTERNAL parameter used to set memory
ZE                  usage in  Application Replay

_KEEP_REMOTE_CO  :  remote column size does not get modified
LUMN_SIZE

_KERNEL_MESSAGE  :  kernel message network driver
_NETWORK_DRIVER

_KES_PARSE_MODE  :  SQL Tune/SPA KES Layer Parse Model control parameter
L

_KFFMAP_HASH_SI  :  size of kffmap_hash table
ZE

_KFFMLK_HASH_SI  :  size of kffmlk_hash table
ZE

_KFFMOP_CHUNKS   :  number of chunks of kffmop’s
_KFFMOP_HASH_SI  :  size of kffmop_hash table
ZE

_KFM_DISABLE_SE  :  disable set fence calls and revert to default (process
T_FENCE             fence)

_KGHDSIDX_COUNT  :  max kghdsidx count
_KGLSIM_MAXMEM_  :  max percentage of shared pool size to be used for KGL
PERCENT             advice

_KGL_BUCKET_COU  :  Library cache hash table bucket count
NT                  (2^_kgl_bucket_count * 256)

_KGL_CAP_HD_ALO  :  capture stacks for library cache handle allocation
_STACKS

_KGL_CLUSTER_LO  :  Library cache support for cluster lock
CK

_KGL_CLUSTER_LO  :  Library cache support for cluster lock read mostly
CK_READ_MOSTLY      optimization

_KGL_CLUSTER_PI  :  Library cache support for cluster pins
N

_KGL_DEBUG       :  Library cache debugging
_KGL_FIXED_EXTE  :  fixed extent size for library cache memory allocations
NTS

_KGL_HASH_COLLI  :  Library cache name hash collision possible
SION

_KGL_HEAP_SIZE   :  extent size for library cache heap 0
_KGL_HOT_OBJECT  :  Number of copies for the hot object
_COPIES

_KGL_KQR_CAP_SO  :  capture stacks for library and row cache state objects
_STACKS

_KGL_LARGE_HEAP  :  maximum heap size before KGL writes warnings to the
_WARNING_THRESH     alert log
OLD

_KGL_LATCH_COUN  :  number of library cache latches
T

_KGL_MESSAGE_LO  :  RAC message lock count
CKS

_KGL_MIN_CACHED  :  Minimum cached SO count. If > 1 can help find SO
_SO_COUNT           corruptions

_KGL_TIME_TO_WA  :  time to wait for locks and pins before timing out
IT_FOR_LOCKS

_KGSB_THRESHOLD  :  threshold size for base allocator
_SIZE

_KGX_LATCHES     :  # of mutex latches if CAS is not supported.
_KILL_CONTROLFI  :  enable killing controlfile enqueue blocker on timeout
LE_ENQUEUE_BLOC
KER

_KILL_DIAGNOSTI  :  timeout delay in seconds before killing enqueue blocker
CS_TIMEOUT

_KILL_ENQUEUE_B  :  if greater than 0 enables killing enqueue blocker
LOCKER

_KILL_JAVA_THRE  :  Kill Java threads and do sessionspace migration at end
ADS_ON_EOC          of call

_KILL_SESSION_D  :  Process dump on kill session immediate
UMP

_KJAC_FORCE_OUT  :  if TRUE, enable to run force outcome on the current
COME_CURRENT_SE     session
SSION

_KJDD_CALL_STAC  :  Enables printing of short call stack with the WFG
K_DUMP_ENABLED

_KJDD_WFG_DUMP_  :  To control the way Wait-For_Graph is dumped
CNTRL

_KJLTMAXGT       :  record latch requests that takes longer than this many
us

_KJLTMAXHT       :  record latch reqeust that are held longer than this
many us

_KJLTON          :  track DLM latch usage on/off
_KKFI_TRACE      :  trace expression substitution
_KKS_FREE_CURSO  :  percentage of cursor stats buckets to scan on each
R_STAT_PCT          load, in 1/10th of a percent

_KOKLI_CACHE_SI  :  Size limit of ADT Table Lookup Cache
ZE

_KOKLN_CURRENT_  :  Make all LOB reads for this session ‘current’ reads
READ

_KOLFUSESLF      :  allow kolf to use slffopen
_KQDSN_MAX_INST  :  maximum bits used for instance value in sequence
ANCE_BITS           partition

_KQDSN_MIN_INST  :  minimum bits used for instance value in sequence
ANCE_BITS           partition

_KQDSN_PARTITIO  :  ratio of instance to session bits in sequence partition
N_RATIO

_KQL_SUBHEAP_TR  :  tracing level for library cache subheap level pins
ACE

_KQR_OPTIMISTIC  :  optimistic reading of row cache objects
_READS

_KSB_RESTART_CL  :  process uptime for restarts
EAN_TIME

_KSB_RESTART_PO  :  process restart policy times in seconds
LICY_TIMES

_KSDXDOCMD_DEFA  :  default timeout for internal oradebug commands
ULT_TIMEOUT_MS

_KSDXDOCMD_ENAB  :  if TRUE ksdxdocmd* invocations are enabled
LED

_KSDXW_CINI_FLG  :  ksdxw context initialization flag
_KSDXW_NBUFS     :  ksdxw number of buffers in buffered mode
_KSDXW_NUM_PGW   :  number of watchpoints on a per-process basis
_KSDXW_NUM_SGW   :  number of watchpoints to be shared by all processes
_KSDXW_STACK_DE  :  number of PCs to collect in the stack when watchpoint
PTH                 is hit

_KSDX_CHARSET_R  :  ratio between the system and oradebug character set
ATIO

_KSD_TEST_PARAM  :  KSD test parmeter
_KSE_DIE_TIMEOU  :  amount of time a dying process is spared by PMON (in
T                   centi-secs)

_KSE_PC_TABLE_S  :  kse pc table cache size
IZE

_KSE_SIGNATURE_  :  number of entries in the kse stack signature cache
ENTRIES

_KSE_SIGNATURE_  :  number of stack frames to cache per kse signature
LIMIT

_KSE_SNAP_RING_  :  should error snap ring entries show a short stack trace
RECORD_STACK

_KSE_SNAP_RING_  :  ring buffer to debug internal error 17090
SIZE

_KSE_TRACE_INT_  :  enables soft assert of KGECLEAERERROR is cleares an
MSG_CLEAR           interrupt message

_KSFD_VERIFY_WR  :  verify asynchronous writes issued through ksfd
ITE

_KSIPC_LIBIPC_P  :  over-ride default location of libipc
ATH

_KSIPC_MODE      :  ksipc mode
_KSIPC_SPARE_PA  :  ksipc spare param 1
RAM1

_KSIPC_SPARE_PA  :  ksipc spare param 2
RAM2

_KSIPC_WAIT_FLA  :  tune ksipcwait
GS

_KSI_CLIENTLOCK  :  if TRUE, DLM-clients can provide the lock memory
S_ENABLED

_KSI_TRACE       :  KSI trace string of lock type(s)
_KSI_TRACE_BUCK  :  memory tracing: use ksi-private or rdbms-shared bucket
ET

_KSI_TRACE_BUCK  :  size of the KSI trace bucket
ET_SIZE

_KSMB_DEBUG      :  ksmb debug flags
_KSMD_PROTECT_M  :  KSMD protect mode for catching stale access
ODE

_KSMG_GRANULE_L  :  granule locking status
OCKING_STATUS

_KSMG_GRANULE_S  :  granule size in bytes
IZE

_KSMG_LOCK_CHEC  :  timeout action interval in minutes
K_INTERVAL

_KSMG_LOCK_REAC  :  repeat count for acquisition of locks
QUIRE_COUNT

_KSMLSAF         :  KSM log alloc and free
_KSM_POST_SGA_I  :  seconds to delay instance startup at sga initialization
NIT_NOTIF_DELAY     (post)
_SECS

_KSM_PRE_SGA_IN  :  seconds to delay instance startup at sga initialization
IT_NOTIF_DELAY_     (pre)
SECS

_KSPOL_TAC_TIME  :  timeouts for TAC registerd by kspol
OUT

_KSR_UNIT_TEST_  :  number of ksr unit test processes
PROCESSES

_KSS_CALLSTACK_  :  state object callstack trace type
TYPE

_KSS_QUIET       :  if TRUE access violations during kss dumps are not
recorded

_KSUITM_ADDON_T  :  command to execute when dead processes don’t go away
RCCMD

_KSUITM_DONT_KI  :  delay inst. termination to allow processes to dump
LL_DUMPER

_KSU_DIAG_KILL_  :  number of seconds ksuitm waits before killing diag
TIME

_KSVPPKTMODE     :  ksv internal pkt test
_KSV_DYNAMIC_FL  :  ksv dynamic flags 1 – override default behavior
AGS1

_KSV_MAX_SPAWN_  :  bg slave spawn failure limit
FAIL_LIMIT

_KSV_POOL_HANG_  :  bg slave pool terminate timeout
KILL_TO

_KSV_POOL_WAIT_  :  bg slave pool wait limit
TIMEOUT

_KSV_SLAVE_EXIT  :  slave exit timeout
_TIMEOUT

_KSV_SPAWN_CONT  :  control all spawning of background slaves
ROL_ALL

_KSV_STATIC_FLA  :  ksv static flags 1 – override default behavior
GS1

_KSXP_COMPAT_FL  :  ksxp compat flags
AGS

_KSXP_CONTROL_F  :  modify ksxp behavior
LAGS

_KSXP_DIAGMODE   :  set to OFF to disable automatic slowsend diagnostics
_KSXP_DISABLE_C  :  disable CLSS interconnects
LSS

_KSXP_DISABLE_D  :  disable dynamic loadin of lib skgxp
YNAMIC_LOADING

_KSXP_DISABLE_I  :  disable ipc statistics
PC_STATS

_KSXP_DISABLE_R  :  disable possibility of starting rolling migration
OLLING_MIGRATIO
N

_KSXP_DUMP_TIME  :  set timeout for kjzddmp request
OUT

_KSXP_DYNAMIC_S  :  dynamic skgxp parameters
KGXP_PARAM

_KSXP_IF_CONFIG  :  ksxp if config flags
_KSXP_INIT_STAT  :  initial number arrays for ipc statistics
S_BKTS

_KSXP_LWIPC_ENA  :  enable lwipc for KSXP
BLED

_KSXP_MAX_STATS  :  max. arrays for ipc statistics
_BKTS

_KSXP_PING_ENAB  :  disable dynamic loadin of lib skgxp
LE

_KSXP_PING_POLL  :  max. arrays for ipc statistics
ING_TIME

_KSXP_REAPING    :  tune ksxp layer reaping limit
_KSXP_REPORTING  :  reporting process for KSXP
_PROCESS

_KSXP_SEND_TIME  :  set timeout for sends queued with the inter-instance
OUT                 IPC

_KSXP_SKGXPG_LA  :  last defined skgxpg parameter – ksxp
ST_PARAMETER

_KSXP_SKGXP_ANT  :  SKGXP ANT options
_OPTIONS

_KSXP_SKGXP_COM  :  over-ride default location of lib skgxp compat
PAT_LIBRARY_PAT
H

_KSXP_SKGXP_CTX  :  IPC debug options flags (RAC)
_FLAGS1

_KSXP_SKGXP_CTX  :  IPC debug options flags mask (RAC)
_FLAGS1MASK

_KSXP_SKGXP_DYN  :  IPC protocol override (RAC)
AMIC_PROTOCOL       (0/-1=*,2=UDP,3=RDS,!0x1000=ipc_X)

_KSXP_SKGXP_INE  :  limit SKGXP networks
TS

_KSXP_SKGXP_LIB  :  over-ride default location of lib skgxp
RARY_PATH

_KSXP_SKGXP_RGN  :  region socket limits (0xFFFFNNXX): F=flags, N=min,
_PORTS              X=max

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 1
RE_PARAM1

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 2
RE_PARAM2

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 3
RE_PARAM3

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 4
RE_PARAM4

_KSXP_SKGXP_SPA  :  ipc ksxp spare parameter 5
RE_PARAM5

_KSXP_STATS_MEM  :  limit ipc statistics memory. this parameter is a
_LMT                percentage value

_KSXP_TESTING    :  KSXP test parameter
_KSXP_UNIT_TEST  :  enable byte transformation unit test
_BYTE_TRANSFORM
ATION

_KSXP_WAIT_FLAG  :  tune ksxpwait
S

_KTB_DEBUG_FLAG  :  ktb-layer debug flags
S

_KTC_DEBUG       :  for ktc debug
_KTC_LATCHES     :  number of ktc latches
_KTILMSC_EXP     :  expiration time of ktilm segment cache (in second)
_KTSLJ_SEGEXT_M  :  segment pre-extension max size in MB (0: unlimited)
AX_MB

_KTSLJ_SEGEXT_R  :  segment pre-extension retry
ETRY

_KTSLJ_SEGEXT_W  :  segment pre-extension warning threshold in percentage
ARNING

_KTSLJ_SEGEXT_W  :  segment pre-extension warning threshold in MB
ARNING_MB

_KTSPSRCH_MAXSC  :  maximum segments supported by space search cache
_KTSPSRCH_MAXSK  :  space search cache rejection skip upper limit
IP

_KTSPSRCH_SCCHK  :  cleanout check time of space search cache
_KTSPSRCH_SCEXP  :  expiration time of space search cache
_KTST_RSS_MAX    :  maximum temp extents to be released across instance
_KTST_RSS_MIN    :  minimum temp extents to be released across instance
_KTST_RSS_RETRY  :  maximum retries of sort segment release
_KTTEXT_WARNING  :  tablespace pre-extension warning threshold in
percentage

_KTU_LATCHES     :  number of KTU latches
_KU_TRACE        :  datapump trace parameter
_KXDBIO_CTX_INI  :  initial count of KXDBIO state object
T_COUNT

_KXDBIO_DISABLE  :  KXDBIO Disable offload for the set opcodes.  Value is a
_OFFLOAD_OPCODE     Bitmap of    0x00000001 – disable cell to cell data
copy offload    0x00000002 – disable disk scrubbing
offload to cell    0x00000004 – disable offloaded
writes to cell

_KXDBIO_ENABLE_  :  KXDBIO Enable Dumb storage simulation for the set
DS_OPCODE           opcodes.

_KXDBIO_HCA_LOA  :  HCA loadavg threshold at which writes need to get
DAVG_THRESH         offloaded

_KXDBIO_UT_CTL   :  kxdbio unit test controls
_LARGE_POOL_MIN  :  minimum allocation size in bytes for the large
_ALLOC              allocation pool

_LAST_ALLOCATIO  :  period over which an instance can retain an active
N_PERIOD            level1 bitmap

_LATCH_CLASSES   :  latch classes override
_LATCH_CLASS_0   :  latch class 0
_LATCH_CLASS_1   :  latch class 1
_LATCH_CLASS_2   :  latch class 2
_LATCH_CLASS_3   :  latch class 3
_LATCH_CLASS_4   :  latch class 4
_LATCH_CLASS_5   :  latch class 5
_LATCH_CLASS_6   :  latch class 6
_LATCH_CLASS_7   :  latch class 7
_LATCH_MISS_STA  :  Sid of process for which to collect latch stats
T_SID

_LATCH_WAIT_LIS  :  Time to sleep on latch wait list until getting priority
T_PRI_SLEEP_SEC
S

_LDR_IO_SIZE     :  size of write IOs used during a load operation
_LDR_IO_SIZE2    :  size of write IOs used during a load operation of EHCC
with HWMB

_LDR_PGA_LIM     :  pga limit, beyond which new partition loads are delayed
_LDR_TEMPSEG_TH  :  amount to buffer prior to allocating temp segment
RESHOLD             (extent sizing)

_LEFT_NESTED_LO  :  enable random distribution method for left of
OPS_RANDOM          nestedloops

_LGWR_DELAY_WRI  :  LGWR write delay for debugging
TE

_LGWR_IO_OUTLIE  :  LGWR I/O outlier frequency
R

_LGWR_IO_SLAVES  :  LGWR I/O slaves
_LGWR_MAX_NS_WT  :  Maximum wait time for lgwr to allow NetServer to
progress

_LGWR_NS_NL_MAX  :  Variable to simulate network latency or buffer
threshold

_LGWR_NS_NL_MIN  :  Variable to simulate network latency or buffer
threshold

_LGWR_NS_SIM_ER  :  Variable to simulate errors lgwrns
R

_LGWR_POSTS_FOR  :  LGWR posts commit waiters for pending broadcasts
_PENDING_BCASTS

_LGWR_TA_SIM_ER  :  Variable to simulate errors lgwr true async
R

_LIBRARY_CACHE_  :  whether KGL advice should be turned on
ADVICE

_LIGHTWEIGHT_HD  :  Lightweight headers for redo
RS

_LIKE_WITH_BIND  :  treat LIKE predicate with bind as an equality predicate
_AS_EQUALITY

_LIMIT_ITLS      :  limit the number of ITLs in OLTP Compressed Tables
_LINUX_PREPAGE_  :  prepage large pages during allocation on Linux
LARGE_PAGES

_LMN_COMPRESSIO  :  suppl logging for compression enabled
N

_LM_ACTIVATE_LM  :  threshold value to activate an additional lms
S_THRESHOLD

_LM_ASM_ENQ_HAS  :  if TRUE makes ASM use enqueue master hashing for fusion
HING                locks

_LM_BATCH_COMPR  :  GES threshold to start compression on batch messages
ESSION_THRESHOL
D

_LM_BETTER_DDVI  :  GES better deadlock victim
CTIM

_LM_BIG_CLUSTER  :  enable certain big cluster optimizations in drm
_OPTIMIZATIONS

_LM_BROADCAST_R  :  Enable broadcast of highest held mode of resource.
ES

_LM_BROADCAST_R  :  Trace string of resource type(s)
ESNAME

_LM_CACHE_ALLOC  :  ratio of cached over allocated resources
ATED_RES_RATIO

_LM_CACHE_LVL0_  :  how often to cleanup level 0 cache res (in sec)
CLEANUP

_LM_CACHE_RES_C  :  percentage of cached resources should be cleanup
LEANUP

_LM_CACHE_RES_C  :  max number of batches of cached resources to free per
LEANUP_TRIES        cleanup

_LM_CACHE_RES_O  :  ges resource cache options
PTIONS

_LM_CACHE_RES_S  :  multiple of iniital res cache below which cleanup is
KIP_CLEANUP         skipped

_LM_CACHE_RES_T  :  cache resource: string of lock types(s)
YPE

_LM_CHECKSUM_BA  :  GES checksum batch messages
TCH_MSG

_LM_COMM_CHANNE  :  GES communication channel type
L

_LM_COMM_MSGQ_B  :  busy wait time in microsecond for msgq
USYWAIT

_LM_COMM_REAP_C  :  message reap count for receive
OUNT

_LM_COMM_TKTS_A  :  Ticket allocation addition factor
DD_FACTOR

_LM_COMM_TKTS_C  :  Weighted average calculation interval length (second)
ALC_PERIOD_LENG
TH

_LM_COMM_TKTS_M  :  Max number of periods used in weighted avearage
AX_PERIODS          calculation

_LM_COMM_TKTS_M  :  Time to wait before allowing an allocation decrease
IN_DECREASE_WAI
T

_LM_COMM_TKTS_M  :  Time to wait before allowing an allocation increase
IN_INCREASE_WAI
T

_LM_COMM_TKTS_M  :  Ticket allocation multiplication factor
ULT_FACTOR

_LM_COMM_TKTS_N  :  Null request frequency threshold (percentage)
ULLREQ_THRESHOL
D

_LM_COMPRESSION  :  GES compression scheme
_SCHEME

_LM_CONTIGUOUS_  :  number of contiguous blocks that will hash to the same
RES_COUNT           HV bucket

_LM_DD_IGNORE_N  :  if TRUE nodeadlockwait/nodeadlockblock options are
ODD                 ignored

_LM_DD_INTERVAL  :  dd time interval in seconds
_LM_DD_MAXDUMP   :  max number of locks to be dumped during dd validation
_LM_DD_MAX_SEAR  :  max dd search time per token
CH_TIME

_LM_DD_SCAN_INT  :  dd scan interval in seconds
ERVAL

_LM_DD_SEARCH_C  :  number of dd search per token get
NT

_LM_DEFERRED_MS  :  deferred message timeout
G_TIMEOUT

_LM_DRMOPT12     :  enable drm scan optimizations in 12
_LM_DRMOPT12_NO  :  enable drm latching optimizations in 12
LATCH

_LM_DRM_BATCH_T  :  time in seconds to wait to batch drm requests
IME

_LM_DRM_DISABLE  :  disable drm in different level
_LM_DRM_HILOAD_  :  drm high load threshold percentage
PERCENTAGE

_LM_DRM_LOWLOAD  :  drm low load threshold percentage
_PERCENTAGE

_LM_DRM_MAX_REQ  :  dynamic remastering maximum affinity requests processed
UESTS               together

_LM_DRM_MIN_INT  :  minimum interval in secs between two consecutive drms
ERVAL

_LM_DRM_OBJECT_  :  enable/disable object scan to force full table scan
SCAN                always

_LM_DRM_WINDOW   :  dynamic remastering bucket window size
_LM_DRM_XLATCH   :  dynamic remastering forced exclusive latches
_LM_DUMP_NULL_L  :  dump null lock in state dump
OCK

_LM_DYNAMIC_LMS  :  dynamic lms invocation
_LM_DYNAMIC_LOA  :  dynamic load adjustment
D

_LM_ENABLE_AFF_  :  enables affinity benefit computations if TRUE
BENEFIT_STATS

_LM_ENQUEUE_BLO  :  enqueue blocker dump timeout
CKER_DUMP_TIMEO
UT

_LM_ENQUEUE_BLO  :  enqueue blocker dump timeout count
CKER_DUMP_TIMEO
UT_CNT

_LM_ENQUEUE_BLO  :  enqueue blocker kill timeout
CKER_KILL_TIMEO
UT

_LM_ENQUEUE_FRE  :  Number of enqueue freelist
ELIST

_LM_ENQUEUE_TIM  :  enqueue suggested min timeout in seconds
EOUT

_LM_ENQ_LOCK_FR  :  Number of ges enqueue element freelist
EELIST

_LM_ENQ_RCFG     :  if TRUE enables enqueue reconfiguration
_LM_FDRM_STATS   :  gather full drm statistics
_LM_FILE_AFFINI  :  mapping between file id and master instance number
TY

_LM_FILE_READ_M  :  mapping between read-mostly file id and master instance
OSTLY               number

_LM_FREEZE_KILL  :  timeout for killing unfrozen processes in rcfg/drm
_TIME               freeze step

_LM_FREE_QUEUE_  :  GES free queue threshold
THRESHOLD

_LM_GLOBAL_POST  :  if TRUE deliver global posts to remote nodes
S

_LM_HASHTABLE_B  :  High element threshold in hash table bucket
KT_HIGH

_LM_HASHTABLE_B  :  Low element threshold in hash table bucket
KT_LOW

_LM_HASHTABLE_B  :  Threshold for hash table resizing
KT_THR

_LM_HB_ACCEPTAB  :  list of acceptable hang conditions in heartbeat check
LE_HANG_CONDITI
ON

_LM_HB_CALLSTAC  :  hb diagnostic call stack collection time in seconds
K_COLLECT_TIME

_LM_HB_DISABLE_  :  list of process names to be disabled in heartbeat check
CHECK_LIST

_LM_HB_ENABLE_A  :  to enable the wait analysis with acceptable condition
CL_CHECK            lists

_LM_HB_EXPONENT  :  heartbeat exponential hang time multiplier
IAL_HANG_TIME_F
ACTOR

_LM_HB_MAXIMUM_  :  maximum heartbeat hang report count
HANG_REPORT_COU
NT

_LM_HIGH_LOAD_S  :  high watermark system load percentage
YSLOAD_PERCENTA
GE

_LM_HIGH_LOAD_T  :  high load threshold parameter
HRESHOLD

_LM_IDLE_CONNEC  :  GES idle connection check
TION_CHECK

_LM_IDLE_CONNEC  :  GES idle connection check interval time
TION_CHECK_INTE
RVAL

_LM_IDLE_CONNEC  :  GES idle connection instance check callout
TION_INSTANCE_C
HECK_CALLOUT

_LM_IDLE_CONNEC  :  GES idle connection kill
TION_KILL

_LM_IDLE_CONNEC  :  GES idle connection max skip kill request
TION_KILL_MAX_S
KIPS

_LM_IDLE_CONNEC  :  GES maximum idle connection kill request ignore count
TION_MAX_IGNORE
_KILL_COUNT

_LM_IDLE_CONNEC  :  GES idle connection health quorum threshold
TION_QUORUM_THR
ESHOLD

_LM_KILL_FG_ON_  :  GES kill fg on IPC timeout
TIMEOUT

_LM_LHUPD_INTER  :  load and health update interval
VAL

_LM_LMD_WAITTIM  :  default wait time for lmd in centiseconds
E

_LM_LMON_NOWAIT  :  if TRUE makes lmon get nowait latches with timeout loop
_LATCH

_LM_LMS          :  number of background gcs server processes to start
_LM_LMS_OPT_PRI  :  enable freeslot lms priority optimization
ORITY

_LM_LMS_PRIORIT  :  frequency of LMS priority decisions in milliseconds
Y_CHECK_FREQUEN
CY

_LM_LMS_PRIORIT  :  enable lms priority modification
Y_DYNAMIC

_LM_LMS_RT_THRE  :  maximum number of real time lms processes on machine
SHOLD

_LM_LMS_SPIN     :  make lms not sleep
_LM_LMS_WAITTIM  :  default wait time for lms in centiseconds
E

_LM_LOCAL_HP_EN  :  use static file affinity for HP enqueue mastership
Q

_LM_LOCKS        :  number of enqueues configured for cluster database
_LM_LOW_LOAD_PE  :  low watermark percentage for load threshold
RCENTAGE

_LM_MASTER_WEIG  :  master resource weight for this instance
HT

_LM_MAX_LMS      :  max. number of background global cache server processes
_LM_MSG_BATCH_S  :  GES batch message size
IZE

_LM_MSG_CLEANUP  :  GES message buffer cleanup interval time
_INTERVAL

_LM_MSG_POOL_DU  :  GES message pool dump threshold in terms of buffer
MP_THRESHOLD        count

_LM_NODE_JOIN_O  :  cluster database node join optimization in reconfig
PT

_LM_NON_FAULT_T  :  disable cluster database fault-tolerance mode
OLERANT

_LM_NO_LH_CHECK  :  skip load and health check at decision points
_LM_NO_SYNC      :  skip reconfiguration/drm syncr/synca messaging
_LM_NUM_BNFT_ST  :  number of buckets in the benefit stats hash table
ATS_BUCKETS

_LM_NUM_PT_BUCK  :  number of buckets in the object affinity hash table
ETS

_LM_NUM_PT_LATC  :  number of latches in the object affinity hash table
HES

_LM_POSTEVENT_B  :  postevent buffer size
UFFER_SIZE

_LM_PREREGISTER  :  enqueue type that requires pre-registration to css
_CSS_RESTYPE

_LM_PROCESS_BAT  :  GES implicit process batching for IPC messages
CHING

_LM_PROCESS_LOC  :  limit on scanning process lock queue instead of
K_Q_SCAN_LIMIT      resource convert lock queue

_LM_PROCS        :  number of client processes configured for cluster
database

_LM_PROC_FREEZE  :  reconfiguration: process freeze timeout
_TIMEOUT

_LM_PSRCFG       :  enable pseudo reconfiguration
_LM_RAC_SPARE_D  :  rac parameter dp1
P1

_LM_RAC_SPARE_D  :  rac parameter dp10
P10

_LM_RAC_SPARE_D  :  rac parameter dp2
P2

_LM_RAC_SPARE_D  :  rac parameter dp3
P3

_LM_RAC_SPARE_D  :  rac parameter dp4
P4

_LM_RAC_SPARE_D  :  rac parameter dp5
P5

_LM_RAC_SPARE_D  :  rac parameter dp6
P6

_LM_RAC_SPARE_D  :  rac parameter dp7
P7

_LM_RAC_SPARE_D  :  rac parameter dp8
P8

_LM_RAC_SPARE_D  :  rac parameter dp9
P9

_LM_RAC_SPARE_P  :  rac parameter p1
1

_LM_RAC_SPARE_P  :  rac parameter p10
10

_LM_RAC_SPARE_P  :  rac parameter p2
2

_LM_RAC_SPARE_P  :  rac parameter p3
3

_LM_RAC_SPARE_P  :  rac parameter p4
4

_LM_RAC_SPARE_P  :  rac parameter p5
5

_LM_RAC_SPARE_P  :  rac parameter p6
6

_LM_RAC_SPARE_P  :  rac parameter p7
7

_LM_RAC_SPARE_P  :  rac parameter p8
8

_LM_RAC_SPARE_P  :  rac parameter p9
9

_LM_RCFG_TIMEOU  :  dlm reconfiguration timeout
T

_LM_RCVINST      :  designated instance to do instance recovery
_LM_RCVR_HANG_A  :  receiver hang allow time in seconds
LLOW_TIME

_LM_RCVR_HANG_C  :  to kill receiver hang at control file IO
FIO_KILL

_LM_RCVR_HANG_C  :  receiver hang check frequency in seconds
HECK_FREQUENCY

_LM_RCVR_HANG_C  :  examine system load when check receiver health
HECK_SYSTEM_LOA
D

_LM_RCVR_HANG_K  :  to kill receiver hang
ILL

_LM_RCVR_HANG_S  :  systemstate dump level upon receiver hang
YSTEMSTATE_DUMP
_LEVEL

_LM_RESEND_OPEN  :  timeout in secs before resubmitting the open-convert
_CONVERT_TIMEOU
T

_LM_RESS         :  number of resources configured for cluster database
_LM_RES_HASH_BU  :  number of resource hash buckets
CKET

_LM_RES_PART     :  number of resource partition configured for gcs
_LM_RES_TM_HASH  :  number of extra TM resource hash buckets
_BUCKET

_LM_RM_SLAVES    :  if non zero, it enables remastering slaves
_LM_SENDPROXY_R  :  GES percentage of send proxy reserve of send tickets
ESERVE

_LM_SEND_MODE    :  GES send mode
_LM_SEND_QUEUE_  :  GES send queue message batching
BATCHING

_LM_SEND_QUEUE_  :  GES send queue maximum length
LENGTH

_LM_SHARE_LOCK_  :  if TRUE enables share lock optimization
OPT

_LM_SINGLE_INST  :  enable single instance affinity lock optimization
_AFFINITY_LOCK

_LM_SPARE_THREA  :  number of spare threads to be created by the GPnP
DS                  master

_LM_SPARE_UNDO   :  number of spare undo tablespaces to be created by GPnP
master

_LM_SQ_BATCH_FA  :  GES send queue minimum batching factor
CTOR

_LM_SQ_BATCH_TY  :  GES send queue batching mechanism
PE

_LM_SQ_BATCH_WA  :  GES send queue batching waittime in tick
ITTICK

_LM_SYNC_TIMEOU  :  Synchronization timeout for DLM reconfiguration steps
T

_LM_TICKETS      :  GES messaging tickets
_LM_TICKET_ACTI  :  Flow control ticket active sendback threshold
VE_SENDBACK

_LM_TX_DELTA     :  TX lock localization delta
_LM_USE_GCR      :  use GCR module if TRUE
_LM_USE_NEW_DEF  :  use new defered msg queue timeout action
MSGTMO_ACTION

_LM_USE_TX_TSN   :  use undo tsn affinity master as TX enqueue master
_LM_VALIDATE_PB  :  GES process batch validation
ATCH

_LM_WAIT_PENDIN  :  GES wait on pending send queue
G_SEND_QUEUE

_LM_WATCHPOINT_  :  GES number of watchpoints
MAXIMUM

_LM_WATCHPOINT_  :  GES maximum time in seconds to keep watchpoint
TIMEOUT

_LM_XIDS         :  number of transaction IDs configured for cluster
database

_LOAD_WITHOUT_C  :  Load PL/SQL or Database objects without compilation
OMPILE

_LOCAL_ARC_ASSE  :  Assert whenever local ORL arch waits for space
RT_ON_WAIT

_LOCAL_COMMUNIC  :  enable local communication costing when TRUE
ATION_COSTING_E
NABLED

_LOCAL_COMMUNIC  :  set the ratio between global and local communication
ATION_RATIO         (0..100)

_LOCAL_HANG_ANA  :  the interval at which local hang analysis is run
LYSIS_INTERVAL_
SECS

_LOCK_REF_CONST  :  number of nowait attempts to lock referential
RAINT_COUNT         constraint

_LOCK_SGA_AREAS  :  Lock specified areas of the SGA in physical memory
_LOGOUT_STORM_R  :  number of processes that can logout in a second
ATE

_LOGOUT_STORM_R  :  maximum retry count for logouts
ETRYCNT

_LOGOUT_STORM_T  :  timeout in centi-seconds for time to wait between
IMEOUT              retries

_LOG_ARCHIVE_AV  :  log archive avoid memcpy
OID_MEMCPY

_LOG_ARCHIVE_BU  :  Number of buffers to allocate for archiving
FFERS

_LOG_ARCHIVE_CA  :  archival callout
LLOUT

_LOG_ARCHIVE_NE  :  Log archive network redo buffer size used by ARCH
TWORK_REDO_SIZE

_LOG_ARCHIVE_PR  :  log archive protection auto demotion
OT_AUTO_DEMOTE

_LOG_ARCHIVE_ST  :  log archive security strong auth
RONG_AUTH

_LOG_ARCHIVE_TR  :  log archive trace pids parameter
ACE_PIDS

_LOG_BLOCKS_DUR  :  log block images when changed during backup
ING_BACKUP

_LOG_BUFFERS_CO  :  corrupt redo buffers before write
RRUPT

_LOG_BUFFERS_DE  :  debug redo buffers (slows things down)
BUG

_LOG_BUFFER_COA  :  Coalescing log buffers for log writes
LESCE

_LOG_CHECKPOINT  :  # redo blocks to verify after checkpoint
_RECOVERY_CHECK

_LOG_COMMITTIME  :  Log commit-time block cleanout
_BLOCK_CLEANOUT

_LOG_DELETION_P  :  archivelog deletion policy for mandatory/all
OLICY               destination

_LOG_EVENT_QUEU  :  number of the log writer event queues
ES

_LOG_FILE_SYNC_  :  Log file sync timeout (centiseconds)
TIMEOUT

_LOG_MAX_OPTIMI  :  maximum number of threads to which log scan
ZE_THREADS          optimization is applied

_LOG_PARALLELIS  :  Enable dynamic strands
M_DYNAMIC

_LOG_PARALLELIS  :  Maximum number of log buffer strands
M_MAX

_LOG_PRIVATE_MU  :  Private strand multiplier for log space preallocation
L

_LOG_PRIVATE_PA  :  Active sessions multiplier to deduce number of private
RALLELISM_MUL       strands

_LOG_READ_BUFFE  :  Number of log read buffers for media recovery
RS

_LOG_READ_BUFFE  :  buffer size for reading log files
R_SIZE

_LOG_SIMULTANEO  :  number of simultaneous copies into redo buffer(# of
US_COPIES           copy latches)

_LOG_SPACE_ERRO  :  should we report space errors to alert log
RS

_LOG_SWITCH_TIM  :  Maximum number of seconds redos in the current log
EOUT                could span

_LOG_UNDO_DF_IN  :  generate marker to log file# that belong to undo
FO                  tablespace

_LOG_WRITER_WOR  :  LGWR worker DLM health-monitoring heartbeat update
KER_DLM_HEARBEA     frequency (ms)
T_UPDATE_FREQ

_LOG_WRITE_INFO  :  Size of log write info array
_SIZE

_LONGOPS_ENABLE  :  longops stats enabled
D

_LONG_BCAST_ACK  :  threshold for long bcast ack warning messages in ms
_WARNING_THRESH
OLD

_LONG_LOG_WRITE  :  threshold for long log write warning messages in ms
_WARNING_THRESH
OLD

_LOWRES_DRIFT_A  :  allowed lowres timer drift for VKTM
LLOWED_SEC

_LOW_SERVER_THR  :  low server thresholds
ESHOLD

_LTC_TRACE       :  tracing level for load table conventional
_LTHREAD_CLEANU  :  interval for cleaning lightweight threads in secs
P_INTV_SECS

_LTHREAD_CLNUP_  :  timeout after hard killing operation for lthread to
HK_WAIT_SECS        exit

_LTHREAD_CLNUP_  :  wait timeout for PMON between soft kill and hard kill
PMON_SOFTKILL_W     of lthreads
AIT_SECS

_LTHREAD_CLNUP_  :  timeout for spawner between soft kill and hard kill of
SPAWNER_SK_WAIT     lthreads
_SECS

_LTHREAD_DEBUG   :  Enable Debugging mode for lightweight threads
_LTHREAD_ENABLE  :  Enable lightweight threads
D

_LTHREAD_MAX_SP  :  maximum time interval a spawner will wait for a lthread
AWN_TIME_CSECS      to get ready

_LTHREAD_SPAWN_  :  time interval for a spawner to check for spawnee to get
CHECK_INTV_MS       ready

_LTHREAD_STEP_D  :  Enable Step wise Debugging mode for lightweight threads
EBUGGING

_MAIN_DEAD_PROC  :  PMON main dead process scan interval (in seconds)
ESS_SCAN_INTERV
AL

_MASTER_DIRECT_  :  direct sends for messages from master (DFS)
SENDS

_MAV_REFRESH_CO  :  refresh materialized views using consistent read
NSISTENT_READ       snapshot

_MAV_REFRESH_DO  :  materialized view MAV refreshes avoid double counting
UBLE_COUNT_PREV
ENTED

_MAV_REFRESH_OP  :  optimizations during refresh of materialized views
T

_MAV_REFRESH_UN  :  # tables for union all expansion during materialized
IONALL_TABLES       view refresh

_MAX_AQ_PERSIST  :  max aq persistent queue memory
ENT_QUEUE_MEMOR
Y

_MAX_ASYNC_WAIT  :  Switchover wait time for async LNS to catch up in
_FOR_CATCH_UP       seconds

_MAX_CLIENTS_PE  :  maximum number of clients per emon
R_EMON

_MAX_CR_ROLLBAC  :  Maximum number of CR  rollbacks per block (LMS)
KS

_MAX_DATA_TRANS  :  Maximum size of data transfer cache
FER_CACHE_SIZE

_MAX_DEFER_GRAN  :  Maximum deferred granules transferred by MMAN atonce
_XFER_ATONCE

_MAX_EXPONENTIA  :  max sleep during exponential backoff
L_SLEEP

_MAX_FILESTAT_T  :  maximum number of file stat tries
RIES

_MAX_FSU_SEGMEN  :  Maximum segments to track for fast space usage
TS

_MAX_FSU_STALE_  :  Allowed space usage staleness in seconds
TIME

_MAX_INCIDENT_F  :  Maximum size (in KB, MB, GB, Blocks) of incident dump
ILE_SIZE            file

_MAX_IO_SIZE     :  Maximum I/O size in bytes for sequential file accesses
_MAX_KCNIBR_RAN  :  Max number of nonlogged data block ranges
GES

_MAX_LARGEPAGE_  :  Maximum number of seconds to spend on largepage
ALLOC_TIME_SECS     allocation

_MAX_LARGE_IO    :  IORM:max number of large I/O’s to issue
_MAX_LNS_SHUTDO  :  Maximum time spent by LNS to archive last log during
WN_ARCHIVAL_TIM     shutdown
E

_MAX_LOG_WRITE_  :  Maximum I/O parallelism within a log write (auto=0)
IO_PARALLELISM

_MAX_LOG_WRITE_  :  Maximum parallelism within a log write (auto=0)
PARALLELISM

_MAX_OUTSTANDIN  :  Maximum number of outstanding redo log writes
G_LOG_WRITES

_MAX_PENDING_SC  :  maximum number of pending SCN broadcasts
N_BCASTS

_MAX_PROTOCOL_S  :  Max occurrence protocols supported in a process
UPPORT

_MAX_QUEUED_REP  :  Maximum number of report requests that can be queued in
ORT_REQUESTS        a list

_MAX_REASONABLE  :  Max reasonable SCN rate
_SCN_RATE

_MAX_REPORT_FLU  :  Max no of report requests that can be flushed per cycle
SHES_PERCYCLE

_MAX_RWGS_GROUP  :  maximum no of groupings on materialized views
INGS

_MAX_SERVICES    :  maximum number of database services
_MAX_SHRINK_OBJ  :  number of segments for which shrink stats will be
_STATS              maintained

_MAX_SLEEP_HOLD  :  max time to sleep while holding a latch
ING_LATCH

_MAX_SMALL_IO    :  IORM:max number of small I/O’s to issue
_MAX_SPACEBG_MS  :  maximum space management interrupt message throttling
GS_PERCENTAGE

_MAX_SPACEBG_SL  :  maximum space management background slaves
AVES

_MAX_SPACEBG_TA  :  maximum space management background tasks
SKS

_MAX_STRING_SIZ  :  controls error checking for the max_string_size
E_BYPASS            parameter

_MAX_SYS_NEXT_E  :  Dictionary managed SYSTEM tablespace maximum next
XTENT               extent size in MB (allowed range [16-4095], 0 if
unlimited)

_MEDIA_RECOVERY  :  media recovery block read batch
_READ_BATCH

_MEMORY_BROKER_  :  memory broker num stat entries
LOG_STAT_ENTRIE
S

_MEMORY_BROKER_  :  Marginal Utility threshold pct for bc
MARGINAL_UTILIT
Y_BC

_MEMORY_BROKER_  :  Marginal Utility threshold pct for sp
MARGINAL_UTILIT
Y_SP

_MEMORY_BROKER_  :  memory broker allow policy to shrink shared pool
SHRINK_HEAPS

_MEMORY_BROKER_  :  memory broker allow policy to shrink java pool
SHRINK_JAVA_HEA
PS

_MEMORY_BROKER_  :  memory broker allow policy to shrink streams pool
SHRINK_STREAMS_
POOL

_MEMORY_BROKER_  :  memory broker policy to timeout shrink shared/java pool
SHRINK_TIMEOUT

_MEMORY_BROKER_  :  memory broker statistics gathering interval for auto
STAT_INTERVAL       sga

_MEMORY_CHECKIN  :  check inuse time interval
USE_TIMEINTV

_MEMORY_IMM_MOD  :  Allow immediate mode without sga/memory target
E_WITHOUT_AUTOS
GA

_MEMORY_INITIAL  :  Initial default sga target percentage with memory
_SGA_SPLIT_PERC     target

_MEMORY_MANAGEM  :  trace memory management activity
ENT_TRACING

_MEMORY_MAX_TGT  :  counts the times checker increments memory target
_INC_CNT

_MEMORY_MGMT_FA  :  always fail immediate mode request
IL_IMMREQ

_MEMORY_MGMT_IM  :  time in seconds to time out immediate mode request
MREQ_TIMEOUT

_MEMORY_NOCANCE  :  do not cancel deferred sga reqs with auto-memory
L_DEFSGAREQ

_MEMORY_SANITY_  :  partial granule sanity check
CHECK

_MEM_ANNOTATION  :  private memory annotation collection level
_PR_LEV

_MEM_ANNOTATION  :  memory annotation pre-allocation scaling
_SCALE

_MEM_ANNOTATION  :  shared memory annotation collection level
_SH_LEV

_MEM_ANNOTATION  :  memory annotation in-memory store
_STORE

_MEM_STD_EXTENT  :  standard extent size for fixed-size-extent heaps
_SIZE

_MESSAGES        :  message queue resources – dependent on # processes & #
buffers

_MGD_RCV_HANDLE  :  Managed recovery handle orphan datafile situation
_ORPHAN_DATAFIL
ES

_MIDTIER_AFFINI  :  cluster wait precentage threshold to enter affinity
TY_CLUSWAIT_PRC
_THRESHOLD

_MIDTIER_AFFINI  :  goodness gradient threshold to dissolve affinity
TY_GOODNESS_THR
ESHOLD

_MINFREE_PLUS    :  max percentage of block space + minfree before we mark
block full

_MINIMAL_STATS_  :  prohibit stats aggregation at compile/partition
AGGREGATION         maintenance time

_MINIMUM_BLOCKS  :  minimum number freeable blocks for shrink to be present
_TO_SHRINK

_MINIMUM_DB_FLA  :  Minimum flashback retention
SHBACK_RETENTIO
N

_MINIMUM_EXTENT  :  minimum number freeable extents for shrink to be
S_TO_SHRINK         present

_MIN_TIME_BETWE  :  minimum time between PSP0 diagnostic used for flow
EN_PSP0_DIAG_SE     control
CS

_MIRROR_REDO_BU  :  Save buffers for debugging redo corruptions
FFERS

_MMV_QUERY_REWR  :  allow rewrites with multiple MVs and/or base tables
ITE_ENABLED

_MODIFY_COLUMN_  :  allow ALTER TABLE MODIFY(column) to violate index key
INDEX_UNUSABLE      length limit

_MODULE_ACTION_  :  Use module and action old length parameter
OLD_LENGTH

_MPMT_ENABLED    :  MPMT mode enabled
_MPMT_ENABLED_B  :  mpmt enabled backgrounds
ACKGROUNDS

_MPMT_FG_ENABLE  :  MPMT mode foreground enabled
D

_MPMT_PROCS_PER  :  max procs per osp
_OSP

_MULTIPLE_INSTA  :  use multiple instances for media recovery
NCE_RECOVERY

_MULTI_INSTANCE  :  force multi instance parallel recovery
_PMR

_MULTI_JOIN_KEY  :  TRUE iff multi-join-key table lookup prefetch is
_TABLE_LOOKUP       enabled

_MULTI_TRANSACT  :  reduce SGA memory use during create of a partitioned
ION_OPTIMIZATIO     table
N_ENABLED

_MUTEX_SPIN_COU  :  Mutex spin count
NT

_MUTEX_WAIT_SCH  :  Mutex wait scheme
EME

_MUTEX_WAIT_TIM  :  Mutex wait time
E

_MV_ADD_LOG_PLA  :  add log placeholder
CEHOLDER

_MV_CLEANUP_ORP  :  cleanup orphaned materialized view metadata
HANED_METADATA

_MV_COMPLETE_RE  :  use conventional INSERTs for MV complete refresh
FRESH_CONVENTIO
NAL

_MV_DEFERRED_NO  :  avoid build deferred MV log age validate
_LOG_AGE_VAL

_MV_EXPRESSION_  :  MV expression extend size
EXTEND_SIZE

_MV_GENERALIZED  :  enable/disable new algorithm for MJV with generalized
_OJ_REFRESH_OPT     outer joins

_MV_REFRESH_ANA  :  what percent to analyze after complete/PCT refresh
_MV_REFRESH_COS  :  refresh decision based on cost or on rules
TING

_MV_REFRESH_DEL  :  delta mv as fractional percentage of size of mv
TA_FRACTION

_MV_REFRESH_ENH  :  enable enhanced detection of DML types from MV log
ANCED_DML_DETEC
TION

_MV_REFRESH_EUT  :  refresh materialized views using EUT(partition)-based
algorithm

_MV_REFRESH_FOR  :  force materialized view refreshes to use parallel query
CE_PARALLEL_QUE
RY

_MV_REFRESH_INS  :  materialized view refresh using insert no append
ERT_NO_APPEND

_MV_REFRESH_NEW  :  materialized view MV refresh new setup disabling
_SETUP_DISABLED

_MV_REFRESH_NO_  :  avoid index rebuild  as part of the MV refresh
IDX_REBUILD

_MV_REFRESH_PKF  :  control MV refresh based on the assumption of PK-FK
K_DATA_UNITS_OP     data units
T

_MV_REFRESH_PKF  :  control MV refresh based on the use of PK-FK
K_RELATIONSHIP_     relationships
OPT

_MV_REFRESH_REB  :  minimum percentage change required in MV to force an
UILD_PERCENTAGE     indexrebuild

_MV_REFRESH_SEL  :  create materialized views with selections and fast
ECTIONS             refresh

_MV_REFRESH_UPD  :  materialized view refresh using update analysis
ATE_ANALYSIS

_MV_REFRESH_USE  :  use hash_sj hint in queries
_HASH_SJ

_MV_REFRESH_USE  :  use no_merge hint in queries
_NO_MERGE

_MV_REFRESH_USE  :  pass cardinality hints to refresh queries
_STATS

_MV_REFSCHED_TI  :  proportionality constant for dop vs. time in MV refresh
MEINCR

_MV_ROLLING_INV  :  create/alter mv uses rolling cursor invalidation
instead of immediate

_MWIN_SCHEDULE   :  Enable/disable Maintenance Window Schedules
_NAMESERVICE_CO  :  NameService Consistency check switch
NSISTENCY_CHECK

_NCHAR_IMP_CNV   :  NLS allow Implicit Conversion between CHAR and NCHAR
_NCHAR_IMP_CONV  :  should implicit conversion bewteen clob and nclob be
allowed

_NCMB_READAHEAD  :  enable multi-block readahead for an index scan
_ENABLED

_NCMB_READAHEAD  :  turn on multi-block readahead tracing
_TRACING

_NCOMP_SHARED_O  :  native compilation shared objects dir
BJECTS_DIR

_NESTED_LOOP_FU  :  nested loop fudge
DGE

_NESTED_MV_FAST  :  nested MV refresh fast on commit allowed
_ONCOMMIT_ENABL
ED

_NET_TIMEOUT_LA  :  NET_TIMEOUT latency
TENCY

_NEWSORT_ENABLE  :  controls whether new sorts can be used as system sort
D

_NEWSORT_ORDERE  :  controls when new sort avoids sorting ordered input
D_PCT

_NEWSORT_TYPE    :  specifies options for the new sort algorithm
_NEW_INITIAL_JO  :  enable initial join orders based on new ordering
IN_ORDERS           heuristics

_NEW_SORT_COST_  :  enables the use of new cost estimate for sort
ESTIMATE

_NINETEENTH_SPA  :  nineteenth spare parameter – string
RE_PARAMETER

_NINTH_SPARE_PA  :  ninth spare parameter – integer
RAMETER

_NLJ_BATCHING_A  :  FAE flag type set after restoring to IO batching buffer
E_FLAG

_NLJ_BATCHING_E  :  enable batching of the RHS IO in NLJ
NABLED

_NLJ_BATCHING_M  :  enable exceptions for buffer cache misses
ISSES_ENABLED

_NLS_PARAMETER_  :  enables or disables updates to v$parameter whenever an
SYNC_ENABLED        alter session statement modifies various nls parameters

_NOLOGGING_KCNB  :  Number of nologging buffer hash buckets
UF_HASH_BUCKETS

_NOLOGGING_KCNB  :  Number of nologging buffer hash latches
UF_HASH_LATCHES

_NOLOGGING_LOAD  :  Nologging standby: direct load buffer size
_SLOTSZ

_NOLOGGING_SDCL  :  Nologging standby append sdcl wait time
_APPEND_WAIT

_NOLOGGING_SEND  :  Nologging standby: outstanding send buffer ratio
BUF_RATIO

_NOLOGGING_TXN_  :  Nologging standby transaction commit wait time
CMT_WAIT

_NONCDB_TO_PDB   :  converting a non-cdb to a pdb
_NOSEG_FOR_UNUS  :  no segments for unusable indexes if set to TRUE
ABLE_INDEX_ENAB
LED

_NOTIFY_CRS      :  notify cluster ready services of startup and shutdown
_NO_OBJECTS      :  no object features are used
_NO_OR_EXPANSIO  :  OR expansion during optimization disabled
N

_NO_RECOVERY_TH  :  no recovery through this resetlogs operation
ROUGH_RESETLOGS

_NO_SMALL_FILE   :  Not to apply new extent scheme for small file temp
spaces

_NO_STALE_JOINB  :  No joinbacks if mv is stale
ACK_REWRITE

_NS_MAX_FLUSH_W  :  Flush wait time for NetServer to flush oustanding
T                   writes

_NS_MAX_SEND_DE  :  Data Loss Time Bound for NetServer
LAY

_NUMA_BUFFER_CA  :  Configure NUMA buffer cache stats
CHE_STATS

_NUMA_INSTANCE_  :  Set of nodes that this instance should run on
MAPPING

_NUMA_POOL_SIZE  :  aggregate size in bytes of NUMA pool
_NUMA_SHIFT_ENA  :  Enable NUMA shift
BLED

_NUMA_SHIFT_VAL  :  user defined value for numa nodes shift
UE

_NUMA_TRACE_LEV  :  numa trace event
EL

_NUMBER_CACHED_  :  maximum number of cached attributes per instance
ATTRIBUTES

_NUMBER_CACHED_  :  maximum number of cached group memberships
GROUP_MEMBERSHI
PS

_NUMBER_GROUP_M  :  maximum number of group memberships per cache line
EMBERSHIPS_PER_
CACHE_LINE

_NUM_LONGOP_CHI  :  number of child latches for long op array
LD_LATCHES

_OBJECT_NUMBER_  :  Object number cache size
CACHE_SIZE

_OBJECT_REUSE_B  :  if 1 or higher, handle object reuse
AST

_OBJECT_STATIST  :  enable the object level statistics collection
ICS

_OBJECT_STATS_M  :  Maximum number of entries to be tracked per stat
AX_ENTRIES

_OBJ_CKPT_TRACI  :  Enable object checkpoint tracing
NG

_ODCI_AGGREGATE  :  trade speed for space in user-defined aggregation
_SAVE_SPACE

_OFFLINE_ROLLBA  :  offline undo segment list
CK_SEGMENTS

_OGMS_HOME       :  GMS home directory
_OLAPI_HISTORY_  :  enable olapi history retention
RETENTION

_OLAPI_IFACE_OB  :  enable olapi interface object history collection
JECT_HISTORY

_OLAPI_IFACE_OB  :  enable olapi interface object history retention
JECT_HISTORY_RE
TENTION

_OLAPI_IFACE_OP  :  enable olapi interface operation history retention
ERATION_HISTORY
_RETENTION

_OLAPI_INTERFAC  :  enable olapi interface operation history collection
E_OPERATION_HIS
TORY

_OLAPI_MEMORY_O  :  enable olapi memory alloc/free history collection
PERATION_HISTOR
Y

_OLAPI_MEMORY_O  :  enable olapi memory alloc/free history collection
PERATION_HISTOR     pausing
Y_PAUSE_AT_SEQN
O

_OLAPI_MEMORY_O  :  enable olapi memory operation history retention
PERATION_HISTOR
Y_RETENTION

_OLAPI_SESSION_  :  enable olapi session history collection
HISTORY

_OLAPI_SESSION_  :  enable olapi session history retention
HISTORY_RETENTI
ON

_OLAP_ADV_COMP_  :  do additional predicate stats analysis for AW rowsource
STATS_CC_PRECOM
P

_OLAP_ADV_COMP_  :  do additional predicate stats analysis for AW rowsource
STATS_MAX_ROWS

_OLAP_AGGREGATE  :  OLAP Aggregate max buffer size
_BUFFER_SIZE

_OLAP_AGGREGATE  :  OLAP Aggregate debug flags
_FLAGS

_OLAP_AGGREGATE  :  OLAP Aggregate function cache enabler
_FUNCTION_CACHE
_ENABLED

_OLAP_AGGREGATE  :  OLAP Aggregate max thread tuples creation
_MAX_THREAD_TUP
LES

_OLAP_AGGREGATE  :  OLAP Aggregate min buffer size
_MIN_BUFFER_SIZ
E

_OLAP_AGGREGATE  :  OLAP Aggregate minimum cardinality of dimensions for
_MIN_THREAD_STA     thread
TUS

_OLAP_AGGREGATE  :  OLAP Aggregate Multi-path Hierarhies enabled
_MULTIPATH_HIER

_OLAP_AGGREGATE  :  OLAP Aggregate status array usage threshold
_STATLEN_THRESH

_OLAP_AGGREGATE  :  OLAP Aggregate max worklists generated at once
_WORKLIST_MAX

_OLAP_AGGREGATE  :  OLAP Aggregate max work parents
_WORK_PER_THREA
D

_OLAP_ALLOCATE_  :  OLAP Allocate Errorlog Format
ERRORLOG_FORMAT

_OLAP_ALLOCATE_  :  OLAP Allocate Errorlog Header format
ERRORLOG_HEADER

_OLAP_ANALYZE_M  :  OLAP DML ANALYZE command max cells to analyze
AX

_OLAP_CONTINUOU  :  OLAP logging definition
S_TRACE_FILE

_OLAP_DBGOUTFIL  :  OLAP DbgOutfile copy output to event log (tracefile)
E_ECHO_TO_EVENT
LOG

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Force
_COREHASH_FORCE

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Large Threshold
_COREHASH_LARGE

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Pressure Threshold
_COREHASH_PRESS
URE

_OLAP_DIMENSION  :  OLAP Dimension In-Core Hash Table Maximum Memory Use
_COREHASH_SIZE

_OLAP_EIF_EXPOR  :  OLAP EIF Export BLOB size
T_LOB_SIZE

_OLAP_LMGEN_DIM  :  Limitmap generator dimension column size
_SIZE

_OLAP_LMGEN_MEA  :  Limitmap generator measure column size
S_SIZE

_OLAP_OBJECT_HA  :  OLAP Object Hash Table Class
SH_CLASS

_OLAP_PAGE_POOL  :  OLAP Page Pool Expand Rate
_EXPAND_RATE

_OLAP_PAGE_POOL  :  OLAP Page Pool High Watermark
_HI

_OLAP_PAGE_POOL  :  OLAP Page Pool Hit Target
_HIT_TARGET

_OLAP_PAGE_POOL  :  OLAP Page Pool Low Watermark
_LOW

_OLAP_PAGE_POOL  :  OLAP Page Pool Pressure Threshold
_PRESSURE

_OLAP_PAGE_POOL  :  OLAP Page Pool Shrink Rate
_SHRINK_RATE

_OLAP_PARALLEL_  :  OLAP parallel update server count
UPDATE_SERVER_N
UM

_OLAP_PARALLEL_  :  OLAP parallel update threshold for number of small
UPDATE_SMALL_TH     pagespaces
RESHOLD

_OLAP_PARALLEL_  :  OLAP parallel update threshold in pages
UPDATE_THRESHOL
D

_OLAP_ROW_LOAD_  :  OLAP Row Load Time Precision
TIME_PRECISION

_OLAP_SESSCACHE  :  OLAP Session Cache knob
_ENABLED

_OLAP_SORT_BUFF  :  OLAP Sort Buffer Size Percentage
ER_PCT

_OLAP_SORT_BUFF  :  OLAP Sort Buffer Size
ER_SIZE

_OLAP_STATBOOL_  :  OLAP Status Boolean max incore bits
COREBITS

_OLAP_STATBOOL_  :  OLAP Status Boolean CBM threshold
THRESHOLD

_OLAP_TABLE_FUN  :  Specify TRUE to output OLAP table function timed
CTION_STATISTIC     statistics trace
S

_OLAP_WRAP_ERRO  :  Wrap error messages to OLAP outfile
RS

_OLD_CONNECT_BY  :  enable/disable old connect by
_ENABLED

_OLD_EXTENT_SCH  :  Revert to old extent allocation
EME

_OLS_CLEANUP_TA  :  Clean up unnecessary entries in OLS sessinfo table
SK

_OLTP_COMPRESSI  :  oltp compression enabled
ON

_OLTP_COMPRESSI  :  oltp compression gain
ON_GAIN

_OLTP_COMP_DBG_  :  oltp compression scan debug
SCAN

_OLTP_SPILL      :  spill rows for oltp compression if loader pga limit is
exceeded

_OMF             :  enable/disable OMF
_OMNI_ENQUEUE_E  :  Enable Omni Enqueue feature (0 = disable, 1 = enable on
NABLE               ASM (default), 2 = enable)

_ONESIDE_COLSTA  :  sanity check on default selectivity for like/range
T_FOR_EQUIJOINS     predicate

_ONLINE_CTAS_DI  :  controls dumping diagnostic information for online ctas
AG

_ONLINE_PATCH_D  :  disable check for function on stack for online patches
ISABLE_STACK_CH
ECK

_OPS_PER_SEMOP   :  the exact number of operations per semop system call
_OPTIMIZER_ADAP  :  optimizer adaptive cursor sharing
TIVE_CURSOR_SHA
RING

_OPTIMIZER_ADAP  :  enable adaptive plans
TIVE_PLANS

_OPTIMIZER_ADAP  :  internal controls for adaptive plans
TIVE_PLAN_CONTR
OL

_OPTIMIZER_ADJU  :  adjust selectivity for null values
ST_FOR_NULLS

_OPTIMIZER_ADS_  :  maximum number of tables in a join under ADS
MAX_TABLE_COUNT

_OPTIMIZER_ADS_  :  maximum time limit (seconds) under ADS
TIME_LIMIT

_OPTIMIZER_ADS_  :  use result cache for ADS queries
USE_RESULT_CACH
E

_OPTIMIZER_ANSI  :  optimization of left/full ansi-joins and lateral views
_JOIN_LATERAL_E
NHANCE

_OPTIMIZER_ANSI  :  re-architecture of ANSI left, right, and full outer
_REARCHITECTURE     joins

_OPTIMIZER_AUTO  :  enable/disable auto stats collection job
STATS_JOB

_OPTIMIZER_AW_J  :  Enables AW Join Push optimization
OIN_PUSH_ENABLE
D

_OPTIMIZER_AW_S  :  Enables statistcs on AW olap_table table function
TATS_ENABLED

_OPTIMIZER_BATC  :  enable table access by ROWID IO batching
H_TABLE_ACCESS_
BY_ROWID

_OPTIMIZER_BETT  :  enable improved costing of index access using
ER_INLIST_COSTI     in-list(s)
NG

_OPTIMIZER_BLOC  :  standard block size used by optimizer
K_SIZE

_OPTIMIZER_CACH  :  cost with cache statistics
E_STATS

_OPTIMIZER_CART  :  optimizer cartesian join enabled
ESIAN_ENABLED

_OPTIMIZER_CBQT  :  cost factor for cost-based query transformation
_FACTOR

_OPTIMIZER_CBQT  :  disable cost based transformation query size
_NO_SIZE_RESTRI     restriction
CTION

_OPTIMIZER_CEIL  :  CEIL cost in CBO
_COST

_OPTIMIZER_CLUS  :  enable/disable the cluster by rowid feature
TER_BY_ROWID

_OPTIMIZER_CLUS  :  internal control for cluster by rowid feature mode
TER_BY_ROWID_CO
NTROL

_OPTIMIZER_COAL  :  consider coalescing of subqueries optimization
ESCE_SUBQUERIES

_OPTIMIZER_COMP  :  enable selectivity estimation for builtin functions
LEX_PRED_SELECT
IVITY

_OPTIMIZER_COMP  :  force index stats collection on index creation/rebuild
UTE_INDEX_STATS

_OPTIMIZER_CONN  :  use cost-based transformation for whr clause in connect
ECT_BY_CB_WHR_O     by
NLY

_OPTIMIZER_CONN  :  combine no filtering connect by and start with
ECT_BY_COMBINE_
SW

_OPTIMIZER_CONN  :  use cost-based transformation for connect by
ECT_BY_COST_BAS
ED

_OPTIMIZER_CONN  :  allow connect by to eliminate duplicates from input
ECT_BY_ELIM_DUP
S

_OPTIMIZER_CORR  :  force correct computation of subquery selectivity
ECT_SQ_SELECTIV
ITY

_OPTIMIZER_COST  :  enables cost-based query transformation
_BASED_TRANSFOR
MATION

_OPTIMIZER_COST  :  enables  costing of filter predicates in IO cost model
_FILTER_PRED

_OPTIMIZER_COST  :  add cost of generating result set when #rows per key >
_HJSMJ_MULTIMAT     1
CH

_OPTIMIZER_COST  :  optimizer cost model
_MODEL

_OPTIMIZER_CUBE  :  enable cube join
_JOIN_ENABLED

_OPTIMIZER_DEGR  :  force the optimizer to use the same degree of
EE                  parallelism

_OPTIMIZER_DIM_  :  use join selectivity in choosing star transformation
SUBQ_JOIN_SEL       dimensions

_OPTIMIZER_DISA  :  disable star transformation sanity checks
BLE_STRANS_SANI
TY_CHECKS

_OPTIMIZER_DIST  :  Transforms Distinct Aggregates to non-distinct
INCT_AGG_TRANSF     aggregates
ORM

_OPTIMIZER_DIST  :  Eliminates redundant SELECT DISTNCT’s
INCT_ELIMINATIO
N

_OPTIMIZER_DIST  :  consider distinct placement optimization
INCT_PLACEMENT

_OPTIMIZER_DSDI  :  controls optimizer usage of dynamic sampling directives
R_USAGE_CONTROL

_OPTIMIZER_DYN_  :  number of blocks for optimizer dynamic sampling
SMP_BLKS

_OPTIMIZER_ELIM  :  optimizer filtering join elimination enabled
INATE_FILTERING
_JOIN

_OPTIMIZER_ENAB  :  use improved density computation for selectivity
LE_DENSITY_IMPR     estimation
OVEMENTS

_OPTIMIZER_ENAB  :  use extended statistics for selectivity estimation
LE_EXTENDED_STA
TS

_OPTIMIZER_ENAB  :  consider table lookup by nl transformation
LE_TABLE_LOOKUP
_BY_NL

_OPTIMIZER_ENHA  :  push filters before trying cost-based query
NCED_FILTER_PUS     transformation
H

_OPTIMIZER_EXTE  :  optimizer extended cursor sharing
NDED_CURSOR_SHA
RING

_OPTIMIZER_EXTE  :  optimizer extended cursor sharing for relational
NDED_CURSOR_SHA     operators
RING_REL

_OPTIMIZER_EXTE  :  controls the optimizer usage of extended stats
NDED_STATS_USAG
E_CONTROL

_OPTIMIZER_EXTE  :  join pred pushdown on group-by, distinct,
ND_JPPD_VIEW_TY     semi-/anti-joined view
PES

_OPTIMIZER_FALS  :  optimizer false predicate pull up transformation
E_FILTER_PRED_P
ULLUP

_OPTIMIZER_FAST  :  use fast algorithm to traverse predicates for physical
_ACCESS_PRED_AN     optimizer
ALYSIS

_OPTIMIZER_FAST  :  use fast algorithm to generate transitive predicates
_PRED_TRANSITIV
ITY

_OPTIMIZER_FEED  :  controls the optimizer feedback framework
BACK_CONTROL

_OPTIMIZER_FILT  :  use cost-based flter predicate pull up transformation
ER_PRED_PULLUP

_OPTIMIZER_FILT  :  enable/disable filter predicate pushdown
ER_PUSHDOWN

_OPTIMIZER_FKR_  :  Optimizer index bias over FTS/IFFS under first K rows
INDEX_COST_BIAS     mode

_OPTIMIZER_FORC  :  force CBQT transformation regardless of cost
E_CBQT

_OPTIMIZER_FREE  :  free transformation subheap after each transformation
_TRANSFORMATION
_HEAP

_OPTIMIZER_FULL  :  enable/disable full outer to left outer join conversion
_OUTER_JOIN_TO_
OUTER

_OPTIMIZER_GATH  :  optimizer gather feedback
ER_FEEDBACK

_OPTIMIZER_GATH  :  enable/disable online statistics gathering
ER_STATS_ON_LOA
D

_OPTIMIZER_GENE  :  optimizer generate transitive predicates
RATE_TRANSITIVE
_PRED

_OPTIMIZER_GROU  :  consider group-by placement optimization
P_BY_PLACEMENT

_OPTIMIZER_HYBR  :  enable hybrid full partition-wise join when TRUE
ID_FPWJ_ENABLED

_OPTIMIZER_IGNO  :  enables the embedded hints to be ignored
RE_HINTS

_OPTIMIZER_IMPR  :  improve table and partial overlap join selectivity
OVE_SELECTIVITY     computation

_OPTIMIZER_INST  :  force the optimizer to use the specified number of
ANCE_COUNT          instances

_OPTIMIZER_INTE  :  interleave join predicate pushdown during CBQT
RLEAVE_JPPD

_OPTIMIZER_INVA  :  time window for invalidation of cursors of analyzed
LIDATION_PERIOD     objects

_OPTIMIZER_JOIN  :  optimizer join elimination enabled
_ELIMINATION_EN
ABLED

_OPTIMIZER_JOIN  :  use join factorization transformation
_FACTORIZATION

_OPTIMIZER_JOIN  :  controls the optimizer join order search algorithm
_ORDER_CONTROL

_OPTIMIZER_JOIN  :  enable/disable sanity check for multi-column join
_SEL_SANITY_CHE     selectivity
CK

_OPTIMIZER_MAX_  :  optimizer maximum join permutations per query block
PERMUTATIONS

_OPTIMIZER_MIN_  :  set minimum cached blocks
CACHE_BLOCKS

_OPTIMIZER_MJC_  :  enable merge join cartesian
ENABLED

_OPTIMIZER_MODE  :  force setting of optimizer mode for user recursive SQL
_FORCE              also

_OPTIMIZER_MULT  :  generate and run plans using several compilation
IPLE_CENV           environments

_OPTIMIZER_MULT  :  control what to report in trace file when run in
IPLE_CENV_REPOR     multi-plan mode
T

_OPTIMIZER_MULT  :  control the types of statements that are run in
IPLE_CENV_STMT      multi-plan mode

_OPTIMIZER_MULT  :  consider join-predicate pushdown that requires
I_LEVEL_PUSH_PR     multi-level pushdown to base table
ED

_OPTIMIZER_MULT  :  allows multiple tables on the left of outerjoin
I_TABLE_OUTERJO
IN

_OPTIMIZER_NATI  :  execute full outer join using native implementaion
VE_FULL_OUTER_J
OIN

_OPTIMIZER_NEST  :  number of groups above which we use nested rollup exec
ED_ROLLUP_FOR_G     for gset
SET

_OPTIMIZER_NEW_  :  compute join cardinality using non-rounded input values
JOIN_CARD_COMPU
TATION

_OPTIMIZER_NULL  :  enables null-accepting semijoin
_ACCEPTING_SEMI
JOIN

_OPTIMIZER_NULL  :  null-aware antijoin parameter
_AWARE_ANTIJOIN

_OPTIMIZER_ORDE  :  Eliminates order bys from views before query
R_BY_ELIMINATIO     transformation
N_ENABLED

_OPTIMIZER_OR_E  :  control or expansion approach used
XPANSION

_OPTIMIZER_OR_E  :  Use subheap for optimizer or-expansion
XPANSION_SUBHEA
P

_OPTIMIZER_OUTE  :  enable/disable outer to inner join conversion
R_JOIN_TO_INNER

_OPTIMIZER_OUTE  :  Enable transformation of outer-join to anti-join if
R_TO_ANTI_ENABL     possible
ED

_OPTIMIZER_PART  :  partial join evaluation parameter
IAL_JOIN_EVAL

_OPTIMIZER_PERC  :  optimizer percent parallel
ENT_PARALLEL

_OPTIMIZER_PERF  :  controls the performance feedback
ORMANCE_FEEDBAC
K

_OPTIMIZER_PROC  :  control the level of processing rates
_RATE_LEVEL

_OPTIMIZER_PROC  :  control the source of processing rates
_RATE_SOURCE

_OPTIMIZER_PURG  :  number of rows to be deleted at each iteration of the
E_STATS_ITERATI     stats                   purging process
ON_ROW_COUNT

_OPTIMIZER_PUSH  :  push down distinct from query block to table
_DOWN_DISTINCT

_OPTIMIZER_PUSH  :  use cost-based query transformation for push pred
_PRED_COST_BASE     optimization
D

_OPTIMIZER_RAND  :  optimizer seed value for random plans
OM_PLAN

_OPTIMIZER_REUS  :  reuse cost annotations during cost-based query
E_COST_ANNOTATI     transformation
ONS

_OPTIMIZER_ROWN  :  Default value to use for rownum bind
UM_BIND_DEFAULT

_OPTIMIZER_ROWN  :  enable the use of first K rows due to rownum predicate
UM_PRED_BASED_F
KR

_OPTIMIZER_SAVE  :  enable/disable saving old versions of optimizer stats
_STATS

_OPTIMIZER_SEAR  :  optimizer search limit
CH_LIMIT

_OPTIMIZER_SELF  :  account for self-induced caching
_INDUCED_CACHE_
COST

_OPTIMIZER_SKIP  :  enable/disable index skip scan
_SCAN_ENABLED

_OPTIMIZER_SKIP  :  consider index skip scan for predicates with guessed
_SCAN_GUESS         selectivity

_OPTIMIZER_SORT  :  enable/disable sort-merge join method
MERGE_JOIN_ENAB
LED

_OPTIMIZER_SORT  :  enable/disable sort-merge join using inequality
MERGE_JOIN_INEQ     predicates
UALITY

_OPTIMIZER_SQU_  :  enables unnesting of subquery in a bottom-up manner
BOTTOMUP

_OPTIMIZER_STAR  :  optimizer star plan enabled
PLAN_ENABLED

_OPTIMIZER_STAR  :  optimizer star transformation minimum cost
_TRANS_MIN_COST

_OPTIMIZER_STAR  :  optimizer star transformation minimum ratio
_TRANS_MIN_RATI
O

_OPTIMIZER_STAR  :  enable/disable star transformation in with clause
_TRAN_IN_WITH_C     queries
LAUSE

_OPTIMIZER_STRA  :  allow adaptive pruning of star transformation bitmap
NS_ADAPTIVE_PRU     trees
NING

_OPTIMIZER_SYST  :  system statistics usage
EM_STATS_USAGE

_OPTIMIZER_TABL  :  consider table expansion transformation
E_EXPANSION

_OPTIMIZER_TRAC  :  optimizer trace parameter
E

_OPTIMIZER_TRAN  :  retain equi-join pred upon transitive equality pred
SITIVITY_RETAIN     generation

_OPTIMIZER_TRY_  :  try Star Transformation before Join Predicate Push Down
ST_BEFORE_JPPD

_OPTIMIZER_UNDO  :  undo changes to query optimizer
_CHANGES

_OPTIMIZER_UNDO  :  optimizer undo cost change
_COST_CHANGE

_OPTIMIZER_UNNE  :  enables unnesting of every type of subquery
ST_ALL_SUBQUERI
ES

_OPTIMIZER_UNNE  :  Unnesting of correlated set subqueries (TRUE/FALSE)
ST_CORR_SET_SUB
Q

_OPTIMIZER_UNNE  :  Unnesting of disjunctive subqueries (TRUE/FALSE)
ST_DISJUNCTIVE_
SUBQ

_OPTIMIZER_UNNE  :  enables unnesting of of scalar subquery
ST_SCALAR_SQ

_OPTIMIZER_USE_  :  use rewritten star transformation using cbqt framework
CBQT_STAR_TRANS
FORMATION

_OPTIMIZER_USE_  :  optimizer use feedback
FEEDBACK

_OPTIMIZER_USE_  :  use GTT session private statistics
GTT_SESSION_STA
TS

_OPTIMIZER_USE_  :  enable/disable the usage of histograms by the optimizer
HISTOGRAMS

_OPTIMIZER_USE_  :  Enables physical optimizer subheap
SUBHEAP

_OPTIM_ADJUST_F  :  adjust stats for skews across partitions
OR_PART_SKEWS

_OPTIM_DICT_STA  :  enable/disable dictionary stats gathering at db
TS_AT_DB_CR_UPG     create/upgrade

_OPTIM_ENHANCE_  :  TRUE to enable index [fast] full scan more often
NNULL_DETECTION

_OPTIM_NEW_DEFA  :  improves the way default equijoin selectivity are
ULT_JOIN_SEL        computed

_OPTIM_PEEK_USE  :  enable peeking of user binds
R_BINDS

_ORACLE_SCRIPT   :  Running an Oracle-supplied script
_ORADBG_PATHNAM  :  path of oradbg script
E

_ORADEBUG_CMDS_  :  oradebug commands to execute at instance startup
AT_STARTUP

_ORADEBUG_FORCE  :  force target processes to execute oradebug commands?
_ORDERED_NESTED  :  enable ordered nested loop costing
_LOOP

_ORDERED_SEMIJO  :  enable ordered semi-join subquery
IN

_ORPH_CLN_INTER  :  qmon periodic interval for removed subscriber messages
VAL                 cleanup

_OR_EXPAND_NVL_  :  enable OR expanded plan for NVL/DECODE predicate
PREDICATE

_OSS_SKGXP_UDP_  :  OSSLIB enable[!0]/disable[0] dynamic credit mgmt for
DYNAMIC_CREDIT_     SKGXP-UDP
MGMT

_OS_SCHED_HIGH_  :  OS high priority level
PRIORITY

_OTHER_WAIT_EVE  :  exclude event names from _other_wait_threshold
NT_EXCLUSION        calculations

_OTHER_WAIT_THR  :  threshold wait percentage for event wait class Other
ESHOLD

_OUTLINE_BITMAP  :  BITMAP_TREE hint enabled in outline
_TREE

_PARALLELISM_CO  :  set the parallelism cost fudge factor
ST_FUDGE_FACTOR

_PARALLEL_ADAPT  :  maximum number of users running with default DOP
IVE_MAX_USERS

_PARALLEL_BLACK  :  parallel execution blackbox enabled
BOX_ENABLED

_PARALLEL_BLACK  :  true if blackbox will be allocated in SGA, false if PGA
BOX_SGA

_PARALLEL_BLACK  :  parallel execution blackbox bucket size
BOX_SIZE

_PARALLEL_BROAD  :  enable broadcasting of small inputs to hash and sort
CAST_ENABLED        merge joins

_PARALLEL_CLUST  :  max percentage of the global buffer cache to use for
ER_CACHE_PCT        affinity

_PARALLEL_CLUST  :  policy used for parallel execution on
ER_CACHE_POLICY     cluster(ADAPTIVE/CACHED)

_PARALLEL_CONSE  :  conservative parallel statement queuing
RVATIVE_QUEUING

_PARALLEL_CTAS_  :  enable/disable parallel CTAS operation
ENABLED

_PARALLEL_DEFAU  :  default maximum number of instances for parallel query
LT_MAX_INSTANCE
S

_PARALLEL_EXECU  :  Alignment of PX buffers to OS page boundary
TION_MESSAGE_AL
IGN

_PARALLEL_FAKE_  :  fake db-scheduler percent used for testing
CLASS_PCT

_PARALLEL_FAULT  :  total number of faults fault-tolerance will handle
_TOLERANCE_THRE
SHOLD

_PARALLEL_FIXWR  :  Number of buckets for each round of fix write
ITE_BUCKET

_PARALLEL_HEART  :  interval of snapshot to track px msging between
BEAT_SNAPSHOT_I     instances
NTERVAL

_PARALLEL_HEART  :  maximum number of historical snapshots archived
BEAT_SNAPSHOT_M
AX

_PARALLEL_LOAD_  :  parallel execution load balanced slave allocation
BALANCING

_PARALLEL_LOAD_  :  number of threads to allocate per instance
BAL_UNIT

_PARALLEL_LOAD_  :  diffrence in percentage controlling px load propagation
PUBLISH_THRESHO
LD

_PARALLEL_MIN_M  :  minimum size of shared pool memory to reserve for pq
ESSAGE_POOL         servers

_PARALLEL_OPTIM  :  parallel optimization phase when all slaves are local
IZATION_PHASE_F
OR_LOCAL

_PARALLEL_QUEUI  :  parallel statement queuing: max waiting time in queue
NG_MAX_WAITINGT
IME

_PARALLEL_RECOV  :  stop at -position- to step through SMON
ERY_STOPAT

_PARALLEL_REPLA  :  Number of messages for each round of parallel replay
Y_MSG_LIMIT

_PARALLEL_SCALA  :  Parallel scalability criterion for parallel execution
BILITY

_PARALLEL_SERVE  :  idle time before parallel query server dies (in 1/100
R_IDLE_TIME         sec)

_PARALLEL_SERVE  :  sleep time between dequeue timeouts (in 1/100ths)
R_SLEEP_TIME

_PARALLEL_SLAVE  :  time(in seconds) to wait before retrying slave
_ACQUISITION_WA     acquisition
IT

_PARALLEL_STATE  :  parallel statement queuing enabled
MENT_QUEUING

_PARALLEL_SYSPL  :  TRUE to obey force parallel query/dml/ddl under System
S_OBEY_FORCE        PL/SQL

_PARALLEL_TIME_  :  unit of work used to derive the degree of parallelism
UNIT                (in seconds)

_PARALLEL_TXN_G  :  enable parallel_txn hint with updates and deletes
LOBAL

_PARAMETER_TABL  :  parameter table block size
E_BLOCK_SIZE

_PARTIAL_PWISE_  :  enable partial partition-wise join when TRUE
JOIN_ENABLED

_PARTITION_ADVI  :  enables sampling based partitioning validation
SOR_SRS_ACTIVE

_PARTITION_CDB_  :  partitioned cdb view evaluation enabled
VIEW_ENABLED

_PARTITION_LARG  :  Enables large extent allocation for partitioned tables
E_EXTENTS

_PARTITION_VIEW  :  enable/disable partitioned views
_ENABLED

_PART_ACCESS_VE  :  use version numbers to access versioned objects for
RSION_BY_NUMBER     partitioning

_PART_REDEF_GLO  :  online partition redefinition update global indexes
BAL_INDEX_UPDAT
E

_PASSWORDFILE_E  :  password file enqueue timeout in seconds
NQUEUE_TIMEOUT

_PCT_REFRESH_DO  :  materialized view PCT refreshes avoid double counting
UBLE_COUNT_PREV
ENTED

_PDB_USE_SEQUEN  :  Use sequence cache in PDB mode
CE_CACHE

_PDML_GIM_SAMPL  :  control separation of global index maintenance for PDML
ING

_PDML_GIM_STAGG  :  slaves start on different index when doing index maint
ERED

_PDML_SLAVES_DI  :  slaves start on different partition when doing index
FF_PART             maint

_PERCENT_FLASHB  :  Percent of flashback buffer filled to be considered
ACK_BUF_PARTIAL     partial full
_FULL

_PGACTX_CAP_STA  :  capture stacks for setting pgactx
CKS

_PGA_LARGE_EXTE  :  PGA large extent size
NT_SIZE

_PGA_LIMIT_CHEC  :  microseconds to wait for over limit confirmation
K_WAIT_TIME

_PGA_LIMIT_DUMP  :  dump PGA summary when signalling ORA-4036
_SUMMARY

_PGA_LIMIT_INTE  :  whether to interrupt smaller eligible processes
RRUPT_SMALLER

_PGA_LIMIT_MIN_  :  bytes of PGA usage below which process will not get
REQ_SIZE            ORA-4036

_PGA_LIMIT_SIMU  :  bytes of physical memory to determine
LATED_PHYSMEM_S     pga_aggregate_limit with
IZE

_PGA_LIMIT_TARG  :  default percent of pga_aggregate_target for
ET_PERC             pga_aggregate_limit

_PGA_LIMIT_TIME  :  seconds to wait until direct interrupt
_TO_INTERRUPT

_PGA_LIMIT_TIME  :  seconds to wait before treating process as idle
_UNTIL_IDLE

_PGA_LIMIT_TIME  :  seconds to wait before killing session over limit
_UNTIL_KILLED

_PGA_LIMIT_TRAC  :  trace pga_aggregate_limit activity
ING

_PGA_LIMIT_USE_  :  use immediate kill for sessions over limit
IMMEDIATE_KILL

_PGA_LIMIT_WATC  :  percentage of limit to have processes watch
H_PERC

_PGA_LIMIT_WATC  :  bytes of PGA usage at which process will begin watching
H_SIZE              limit

_PGA_MAX_SIZE    :  Maximum size of the PGA memory for one process
_PING_WAIT_FOR_  :  Wait for log force before block ping
LOG_FORCE

_PIN_TIME_STATI  :  if TRUE collect statistics for how long a current pin
STICS               is held

_PIVOT_IMPLEMEN  :  pivot implementation method
TATION_METHOD

_PKT_ENABLE      :  enable progressive kill test
_PKT_PMON_INTER  :  PMON process clean-up interval (cs)
VAL

_PKT_START       :  start progressive kill test instrumention
_PLAN_OUTLINE_D  :  explain plan outline data enabled
ATA

_PLAN_VERIFY_IM  :  Performance improvement criterion for evolving plan
PROVEMENT_MARGI     baselines
N

_PLAN_VERIFY_LO  :  Local time limit to use for an individual plan
CAL_TIME_LIMIT      verification

_PLSQL_ANON_BLO  :  PL/SQL anonymous block code-type
CK_CODE_TYPE

_PLSQL_CACHE_EN  :  PL/SQL Function Cache Enabled
ABLE

_PLSQL_DUMP_BUF  :  conditions upon which the PL/SQL circular buffer is
FER_EVENTS          dumped

_PLSQL_MAX_STAC  :  PL/SQL maximum stack size
K_SIZE

_PLSQL_MINIMUM_  :  plsql minimum cache hit percentage required to keep
CACHE_HIT_PERCE     caching active
NT

_PLSQL_NATIVE_F  :  Allocate PL/SQL native frames on the heap if size
RAME_THRESHOLD      exceeds this value

_PLSQL_NVL_OPTI  :  PL/SQL NVL optimize
MIZE

_PLUGGABLE_DATA  :  Debug flag for pluggable database related operations
BASE_DEBUG

_PMON_DEAD_BLKR  :  rate to check blockers are alive during cleanup (in
S_ALIVE_CHK_RAT     seconds)
E_SECS

_PMON_DEAD_BLKR  :  max blockers to check during cleanup
S_MAX_BLKRS

_PMON_DEAD_BLKR  :  max attempts per blocker while checking dead blockers
S_MAX_CLEANUP_A
TTEMPTS

_PMON_DEAD_BLKR  :  rate to scan for dead blockers during cleanup (in
S_SCAN_RATE_SEC     seconds)
S

_PMON_ENABLE_DE  :  look for dead blockers during PMON cleanup
AD_BLKRS

_PMON_LOAD_CONS  :  server load balancing constants (S,P,D,I,L,C,M)
TANTS

_PMON_MAX_CONSE  :  PMON max consecutive posts in main loop
C_POSTS

_POST_WAIT_QUEU  :  Post Wait Queues – Num Dynamic Queues
ES_DYNAMIC_QUEU
ES

_POST_WAIT_QUEU  :  Post Wait Queues – Num Per Class
ES_NUM_PER_CLAS
S

_PQQ_DEBUG_TXN_  :  pq queuing transaction active
ACT

_PQQ_ENABLED     :  Enable Resource Manager based Parallel Statement
Queuing

_PRECOMPUTE_GID  :  precompute gid values and copy them before returning a
_VALUES             row

_PREDICATE_ELIM  :  allow predicate elimination if set to TRUE
INATION_ENABLED

_PRED_MOVE_AROU  :  enables predicate move-around
ND

_PRED_PUSH_CDB_  :  predicate pushdown enabled for CDB views
VIEW_ENABLED

_PREFERED_STAND  :  standby db_unique_name prefered for krb operations
BY

_PRESCOMM        :  presume commit of IMU transactions
_PRE_REWRITE_PU  :  push predicates into views before rewrite
SH_PRED

_PRINT_INMEM_HE  :  print inmem ilm heatmap
ATMAP

_PRINT_REFRESH_  :  enable dbms_output of materialized view refresh
SCHEDULE            schedule

_PRINT_STAT_SEG  :  print ilm statistics segment
MENT

_PRIVATE_MEMORY  :  Start address of large extent memory segment
_ADDRESS

_PROJECTION_PUS  :  projection pushdown
HDOWN

_PROJECTION_PUS  :  level for projection pushdown debugging
HDOWN_DEBUG

_PROJECT_VIEW_C  :  enable projecting out unreferenced columns of a view
OLUMNS

_PROP_OLD_ENABL  :  Shift to pre 11g propagation behaviour
ED

_PROTECT_FRAME_  :  Protect cursor frame heaps
HEAPS

_PTN_CACHE_THRE  :  flags and threshold to control partition metadata
SHOLD               caching

_PUSH_JOIN_PRED  :  enable pushing join predicate inside a view
ICATE

_PUSH_JOIN_UNIO  :  enable pushing join predicate inside a union all view
N_VIEW

_PUSH_JOIN_UNIO  :  enable pushing join predicate inside a union view
N_VIEW2

_PX_ADAPTIVE_DI  :  determines the behavior of adaptive distribution
ST_METHOD           methods

_PX_ADAPTIVE_DI  :  Buffering / decision threshold for adaptive
ST_METHOD_THRES     distribution methods
HOLD

_PX_ADAPTIVE_OF  :  percentage for PQ adaptive offloading of granules
FLOAD_PERCENTAG
E

_PX_ADAPTIVE_OF  :  threshold (GB/s) for PQ adaptive offloading of granules
FLOAD_THRESHOLD

_PX_ASYNC_GETGR  :  asynchronous get granule in the slave
ANULE

_PX_BACK_TO_PAR  :  allow going back to parallel after a serial operation
ALLEL

_PX_BIND_PEEK_S  :  enables sharing of px cursors that were built using
HARING              bind peeking

_PX_BROADCAST_F  :  set the tq broadcasting fudge factor percentage
UDGE_FACTOR

_PX_BUFFER_TTL   :  ttl for px mesg buffers in seconds
_PX_CDB_VIEW_EN  :  parallel cdb view evaluation enabled
ABLED

_PX_CHUNKLIST_C  :  ratio of the number of chunk lists to the default DOP
OUNT_RATIO          per instance

_PX_COMPILATION  :  debug level for parallel compilation
_DEBUG

_PX_COMPILATION  :  tracing level for parallel compilation
_TRACE

_PX_CONCURRENT   :  enables pq with concurrent execution of serial inputs
_PX_CPU_AUTODOP  :  enables or disables auto dop cpu computation
_ENABLED

_PX_CPU_OPERATO  :  CPU operator bandwidth in MB/sec for DOP computation
R_BANDWIDTH

_PX_CPU_PROCESS  :  CPU process bandwidth in MB/sec for DOP computation
_BANDWIDTH

_PX_DP_ARRAY_SI  :  Max number of pq processes supported
ZE

_PX_DUMP_12805_  :  enables or disables tracing of 12805 signal source
SOURCE

_PX_DYNAMIC_OPT  :  turn off/on restartable qerpx dynamic optimization
_PX_DYNAMIC_SAM  :  num of samples for restartable qerpx dynamic
PLE_SIZE            optimization

_PX_EXECUTION_S  :  enable service-based constraint of px slave allocation
ERVICES_ENABLED

_PX_FILTER_PARA  :  enables or disables correlated filter parallelization
LLELIZED

_PX_FILTER_SKEW  :  enable correlated filter parallelization to handle skew
_HANDLING

_PX_FREELIST_LA  :  Divide the computed number of freelists by this power
TCH_DIVISOR         of 2

_PX_GIM_FACTOR   :  weighted autodop global index maintenance factor
_PX_GRANULE_BAT  :  maximum size of a batch of granules
CH_SIZE

_PX_GRANULE_RAN  :  enables or disables randomization of parallel scans
DOMIZE              rowid granules

_PX_GRANULE_SIZ  :  default size of a rowid range granule (in KB)
E

_PX_GROUPBY_PUS  :  perform group-by pushdown for parallel query
HDOWN

_PX_HOLD_TIME    :  hold px at execution time (unit: second)
_PX_HYBRID_TSM_  :  Enable Hybrid Temp Segment Merge/High Water Mark
HWMB_LOAD           Brokered load method

_PX_INDEX_SAMPL  :  parallel query sampling for index create based on
ING_OBJSIZE         object size

_PX_IO_PROCESS_  :  IO process bandwidth in MB/sec for computing DOP
BANDWIDTH

_PX_IO_SYSTEM_B  :  total IO system bandwidth in MB/sec for computing DOP
ANDWIDTH

_PX_JOIN_SKEW_H  :  enables skew handling for parallel joins
ANDLING

_PX_JOIN_SKEW_M  :  sets minimum frequency(%) for skewed value for parallel
INFREQ              joins

_PX_JOIN_SKEW_R  :  sets skew ratio for parallel joins
ATIO

_PX_KXIB_TRACIN  :  turn on kxib tracing
G

_PX_LOAD_BALANC  :  parallel load balancing policy
ING_POLICY

_PX_LOAD_FACTOR  :  weighted autodop load factor
_PX_LOAD_MONITO  :  threshold for pushing information to load slave
R_THRESHOLD         workload monitor

_PX_LOAD_PUBLIS  :  interval at which LMON will check whether to publish PX
H_INTERVAL          load

_PX_LOC_MSG_COS  :  CPU cost to send a PX message via shared memory
T

_PX_MAX_GRANULE  :  maximum number of rowid range granules to generate per
S_PER_SLAVE         slave

_PX_MAX_MAP_VAL  :  Maximum value of rehash mapping for PX
_PX_MAX_MESSAGE  :  percentage of shared pool for px msg buffers range
_POOL_PCT           [5,90]

_PX_MESSAGE_COM  :  enable compression of control messages for parallel
PRESSION            query

_PX_MINUS_INTER  :  enables pq for minus/interect operators
SECT

_PX_MIN_GRANULE  :  minimum number of rowid range granules to generate per
S_PER_SLAVE         slave

_PX_MONITOR_LOA  :  enable consumer load slave workload monitoring
D

_PX_NET_MSG_COS  :  CPU cost to send a PX message over the internconnect
T

_PX_NO_GRANULE_  :  prevent parallel partition granules to be sorted on
SORT                size

_PX_NO_STEALING  :  prevent parallel granule stealing in shared nothing
environment

_PX_NSS_PLANB    :  enables or disables NSS Plan B reparse with outline
_PX_NUMA_STEALI  :  enable/disable PQ granule stealing across NUMA nodes
NG_ENABLED

_PX_NUMA_SUPPOR  :  enable/disable PQ NUMA support
T_ENABLED

_PX_OBJECT_SAMP  :  parallel query sampling for base objects (100000 =
LING                100%)

_PX_OBJECT_SAMP  :  use base object sampling when possible for range
LING_ENABLED        distribution

_PX_ONEPASS_SLA  :  enable/disable one pass slave acquisition for parallel
VE_ACQUISITION      execution

_PX_PARALLELIZE  :  enables or disables expression evaluation
_EXPRESSION         parallelization

_PX_PARTIAL_ROL  :  perform partial rollup pushdown for parallel execution
LUP_PUSHDOWN

_PX_PARTITION_S  :  enables or disables parallel partition-based scan
CAN_ENABLED

_PX_PARTITION_S  :  least number of partitions per slave to start
CAN_THRESHOLD       partition-based scan

_PX_PROACTIVE_S  :  parallel proactive slave allocation threshold/unit
LAVE_ALLOC_THRE
SHOLD

_PX_PROC_CONSTR  :  reduce parallel_max_servers if greater than (processes
AIN                 – fudge)

_PX_PWG_ENABLED  :  parallel partition wise group by enabled
_PX_PWMR_ENABLE  :  parallel partition wise match recognize enabled
D

_PX_REPLICATION  :  enables or disables replication of small table scans
_ENABLED

_PX_ROUND_ROBIN  :  round robin row count to enq to next slave
_ROWCNT

_PX_ROWNUM_PD    :  turn off/on parallel rownum pushdown optimization
_PX_SEND_TIMEOU  :  IPC message  send timeout value in seconds
T

_PX_SINGLE_SERV  :  allow single-slave dfo in parallel query
ER_ENABLED

_PX_SLAVES_SHAR  :  slaves share cursors with QC
E_CURSORS

_PX_TQ_ROWHVS    :  turn on intra-row hash valueing sharing in TQ
_PX_TRACE        :  px trace parameter
_PX_UAL_SERIAL_  :  enables new pq for UNION operators
INPUT

_PX_USE_LARGE_P  :  Use Large Pool as source of PX buffers
OOL

_PX_WIF_DFO_DEC  :  NDV-aware DFO clumping of multiple window sorts
LUMPING

_PX_WIF_EXTEND_  :  extend TQ data redistribution keys for window functions
DISTRIBUTION_KE
YS

_PX_WIF_MIN_NDV  :  mininum NDV of TQ keys needed per slave for scalable
_PER_SLAVE          WiF PX

_PX_XTGRANULE_S  :  default size of a external table granule (in KB)
IZE

_QA_CONTROL      :  Oracle internal parameter to control QA
_QA_LRG_TYPE     :  Oracle internal parameter to specify QA lrg type
_QUERY_COST_REW  :  perform the cost based rewrite with materialized views
RITE

_QUERY_EXECUTIO  :  max size of query execution cache
N_CACHE_MAX_SIZ
E

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of cmaps per dmap in
TE_MAXCMAPS         query disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of dmaps per query
TE_MAXDMAPS         disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of in-lists per
TE_MAXINLISTS       disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of intervals per
TE_MAXINTERVALS     disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of predicates per
TE_MAXPREDS         disjunct

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of query in-list
TE_MAXQRYINLIST     values
VALS

_QUERY_MMVREWRI  :  query mmv rewrite maximum number of region permutations
TE_MAXREGPERM

_QUERY_ON_PHYSI  :  query on physical
CAL

_QUERY_REWRITE_  :  perform query rewrite before&after or only before view
1                   merging

_QUERY_REWRITE_  :  perform query rewrite before&after or only after view
2                   merging

_QUERY_REWRITE_  :  mv rewrite and drop redundant joins
DRJ

_QUERY_REWRITE_  :  rewrite with cannonical form for expressions
EXPRESSION

_QUERY_REWRITE_  :  mv rewrite fresh partition containment
FPC

_QUERY_REWRITE_  :  cost based query rewrite with MVs fudge factor
FUDGE

_QUERY_REWRITE_  :  mv rewrite with jg migration
JGMIGRATE

_QUERY_REWRITE_  :  query rewrite max disjuncts
MAXDISJUNCT

_QUERY_REWRITE_  :  allow query rewrite, if referenced tables are not
OR_ERROR            dataless

_QUERY_REWRITE_  :  perform general rewrite using set operator summaries
SETOPGRW_ENABLE

_QUERY_REWRITE_  :  prune frocol chain before rewrite after view-merging
VOP_CLEANUP

_QUEUE_BUFFER_M  :  max number of bytes to dump to trace file for queue
AX_DUMP_LEN         buffer dump

_RADM_ENABLED    :  Data Redaction
_RBR_CKPT_TRACI  :  Enable reuse block range checkpoint tracing
NG

_RCFG_DISABLE_V  :  if TRUE disables verify at reconfiguration
ERIFY

_RCFG_PARALLEL_  :  if TRUE enables parallel fixwrite at reconfiguration
FIXWRITE

_RCFG_PARALLEL_  :  if TRUE enables parallel replay and cleanup at
REPLAY              reconfiguration

_RCFG_PARALLEL_  :  if TRUE enables parallel verify at reconfiguration
VERIFY

_RDBMS_COMPATIB  :  default RDBMS compatibility level
ILITY

_RDBMS_INTERNAL  :  enable CELL FPLIB filtering within rdbms
_FPLIB_ENABLED

_RDBMS_INTERNAL  :  enable reraising of any exceptions in CELL FPLIB
_FPLIB_RAISE_ER
RORS

_READABLE_STAND  :  readable standby query scn sync timeout
BY_SYNC_TIMEOUT

_READ_MOSTLY_EN  :  Read mostly instances enable non-privileged logons
ABLE_LOGON

_READ_MOSTLY_IN  :  indicates this is a read_mostly instance
STANCE

_READ_MOSTLY_IN  :  internal parameter to control read mostly instance QA
STANCE_QA_CONTR
OL

_READ_MOSTLY_SL  :  Time to wait on read mostly node when hub not available
AVE_TIMEOUT

_READ_ONLY_VIOL  :  read-only violation dump to trace files
ATION_DUMP_TO_T
RACE

_READ_ONLY_VIOL  :  read-only violation array max count
ATION_MAX_COUNT

_READ_ONLY_VIOL  :  read-only violation array per module max count
ATION_MAX_COUNT
_PER_MODULE

_REALFREE_HEAP_  :  minimum max total heap size, in Kbytes
MAX_SIZE

_REALFREE_HEAP_  :  mode flags for real-free heap
MODE

_REALFREE_HEAP_  :  hint for real-free page size in bytes
PAGESIZE

_REALFREE_PQ_HE  :  hint for pq real-free page size in bytes
AP_PAGESIZE

_REAL_TIME_APPL  :  Simulation value with real time apply
Y_SIM

_RECOVERABLE_RE  :  Recoverable recovery batch size (percentage of buffer
COVERY_BATCH_PE     cache)
RCENT

_RECOVERY_ASSER  :  if TRUE, enable expensive integrity checks
TS

_RECOVERY_PERCE  :  recovery buffer cache percentage
NTAGE

_RECOVERY_READ_  :  number of recovery reads which can be outstanding
LIMIT

_RECOVERY_SKIP_  :  allow media recovery even if controlfile seq check
CFSEQ_CHECK         fails

_RECOVERY_VERIF  :  enable thread recovery write verify
Y_WRITES

_RECURSIVE_IMU_  :  recursive transactions may be IMU
TRANSACTIONS

_RECURSIVE_WITH  :  check for maximum level of recursion instead of
_MAX_RECURSION_     checking for cycles
LEVEL

_REDEF_ON_STATE  :  Use on-statement refresh in online redefinition
MENT

_REDO_COMPATIBI  :  general and redo/undo compatibility sanity check
LITY_CHECK

_REDO_LOG_DEBUG  :  Various configuration flags for debugging redo logs
_CONFIG

_REDO_LOG_RECOR  :  Life time in hours for redo log table records
D_LIFE

_REDO_READ_FROM  :  Enable reading redo from in-memory log buffer
_MEMORY

_REDO_TRANSPORT  :  Is ASYNC LNS compression allowed?
_COMPRESS_ALL

_REDO_TRANSPORT  :  redo transport sanity check bit mask
_SANITY_CHECK

_REDO_TRANSPORT  :  I/O stall time before terminating redo transport
_STALL_TIME         process

_REDO_TRANSPORT  :  long I/O stall time before terminating redo transport
_STALL_TIME_LON     process
G

_REDO_TRANSPORT  :  test stream connection?
_STREAM_TEST

_REDO_TRANSPORT  :  Stream network writes?
_STREAM_WRITES

_REDO_TRANSPORT  :  VIO size requirement
_VIO_SIZE_REQ

_REDUCE_SBY_LOG  :  enable standby log scan optimization
_SCAN

_REGION_NAME     :  gsm region name
_RELEASE_INSERT  :  maximum number of unusable blocks to unlink from
_THRESHOLD          freelist

_RELIABLE_BLOCK  :  if TRUE, no side channel on reliable interconnect
_SENDS

_RELOCATE_PDB    :  Relocate PDB to another RAC instance after it is closed
in the current instance

_RELOCATION_COM  :  ASM relocation commit batch size
MIT_BATCH_SIZE

_REMOTE_ASM      :  remote ASM configuration
_REMOTE_AWR_ENA  :  Enable/disable Remote AWR Mode
BLED

_REMOVE_AGGR_SU  :  enables removal of subsumed aggregated subquery
BQUERY

_REMOVE_EXF_COM  :  enable/disable removing of components EXF and RUL
PONENT              during upgrade

_REPLACE_VIRTUA  :  replace expressions with virtual columns
L_COLUMNS

_REPORT_CAPTURE  :  Time (in sec) between two cycles of report capture
_CYCLE_TIME         daemon

_REPORT_CAPTURE  :  100X Percent of system db time daemon is allowed over
_DBTIME_PERCENT     10 cycles
_CUTOFF

_REPORT_CAPTURE  :  No of report capture cycles after which db time is
_RECHARGE_WINDO     recharged
W

_REPORT_CAPTURE  :  Length of time band (in hours) in the reports time
_TIMEBAND_LENGT     bands table
H

_REPORT_REQUEST  :  Time (in min) after which a report request is deleted
_AGEOUT_MINUTES     from queue

_REP_BASE_PATH   :  base path for EM reports in database
_RESET_MAXCAP_H  :  reset maxcap history time
ISTORY

_RESOURCE_INCLU  :  Whether RESOURCE role includes UNLIMITED TABLESPACE
DES_UNLIMITED_T     privilege
ABLESPACE

_RESOURCE_MANAG  :  disable the resource manager always
ER_ALWAYS_OFF

_RESOURCE_MANAG  :  resource mgr top plan for internal use
ER_PLAN

_RESTORE_MAXOPE  :  restore assumption for maxopenfiles
NFILES

_RESTORE_SPFILE  :  restore spfile to this location
_RESULT_CACHE_A  :  result cache auto dml monitoring duration
UTO_DML_MONITOR
ING_DURATION

_RESULT_CACHE_A  :  result cache auto dml monitoring slot
UTO_DML_MONITOR
ING_SLOTS

_RESULT_CACHE_A  :  result cache auto dml threshold
UTO_DML_THRESHO
LD

_RESULT_CACHE_A  :  result cache auto dml trend threshold
UTO_DML_TREND_T
HRESHOLD

_RESULT_CACHE_A  :  result cache auto execution threshold
UTO_EXECUTION_T
HRESHOLD

_RESULT_CACHE_A  :  result cache auto max size allowed
UTO_SIZE_THRESH
OLD

_RESULT_CACHE_A  :  result cache auto time distance
UTO_TIME_DISTAN
CE

_RESULT_CACHE_A  :  result cache auto time threshold
UTO_TIME_THRESH
OLD

_RESULT_CACHE_B  :  result cache block size
LOCK_SIZE

_RESULT_CACHE_C  :  blocks to copy instead of pinning the result
OPY_BLOCK_COUNT

_RESULT_CACHE_D  :  result cache deterministic PLSQL functions
ETERMINISTIC_PL
SQL

_RESULT_CACHE_G  :  Are results available globally across RAC?
LOBAL

_RESULT_CACHE_T  :  maximum time (sec) a session waits for a result
IMEOUT

_RESUMABLE_CRIT  :  raise critical alert for resumable failure
ICAL_ALERT

_REUSE_INDEX_LO  :  number of blocks being examine for index block reuse
OP

_RE_FAST_SQL_OP  :  enables fast boxable sql operator
ERATOR

_RE_INDEPENDENT  :  defines max number of compiled cached expressions for
_EXPRESSION_CAC     iee
HE_SIZE

_RE_NUM_COMPLEX  :  defines max number of compiled complex operator per
_OPERATOR           ruleset-iee

_RE_NUM_ROWCACH  :  defines max number of complex operators loaded with row
E_LOAD              cache

_RE_RESULT_CACH  :  defines max number key for result cache hash table
E_KEYSIZ

_RE_RESULT_CACH  :  defines max number of cached elements for result cache
E_SIZE

_RIGHT_OUTER_HA  :  Right Outer/Semi/Anti Hash Enabled
SH_ENABLE

_RMAN_IO_PRIORI  :  priority at which rman backup i/o’s are done
TY

_RMAN_ROUNDROBI  :  Numa round robin placement for RMAN procs
N_PLACEMENT

_RM_CLUSTER_INT  :  interconnects for RAC use (RM)
ERCONNECTS

_RM_NUMA_SCHED_  :  Is Resource Manager (RM) related NUMA scheduled policy
ENABLE              enabled

_RM_NUMA_SIMULA  :  number of cpus for each pg for numa simulation in
TION_CPUS           resource manager

_RM_NUMA_SIMULA  :  number of PGs for numa simulation in resource manager
TION_PGS

_ROLLBACK_SEGME  :  number of undo segments
NT_COUNT

_ROLLBACK_SEGME  :  starting undo segment number
NT_INITIAL

_ROLLBACK_STOPA  :  stop at -position to step rollback
T

_ROND_TEST_MODE  :  rac one node test mode
_ROWLEN_FOR_CHA  :  maximum rowlen above which rows may be chained across
INING_THRESHOLD     blocks

_ROWSETS_CDB_VI  :  rowsets enabled for CDB views
EW_ENABLED

_ROWSETS_ENABLE  :  enable/disable rowsets
D

_ROWSETS_MAX_RO  :  maximum number of rows in a rowset
WS

_ROWSETS_TARGET  :  target size in bytes for space reserved in the frame
_MAXSIZE            for a rowset

_ROWSOURCE_EXEC  :  if TRUE, Oracle will collect rowsource statistics
UTION_STATISTIC
S

_ROWSOURCE_PROF  :  if TRUE, Oracle will capture active row sources in
ILING_STATISTIC     v$active_session_history
S

_ROWSOURCE_STAT  :  frequency of rowsource statistic sampling (must be a
ISTICS_SAMPFREQ     power of 2)

_ROWSRC_TRACE_L  :  Row source tree tracing level
EVEL

_ROW_CACHE_CURS  :  number of cached cursors for row cache management
ORS

_ROW_CR          :  enable row cr for all sql
_ROW_LOCKING     :  row-locking
_ROW_SHIPPING_E  :  enable row shipping explain plan support
XPLAIN

_ROW_SHIPPING_T  :  row shipping column selection threshold
HRESHOLD

_RTADDM_TRIGGER  :  comma-separated list of numeric arguments for RT addm
_ARGS               trigger

_RTADDM_TRIGGER  :  To enable or disable Real-Time ADDM automatic trigger
_ENABLED

_RTA_SYNC_WAIT_  :  RTA sync wait timeout
TIMEOUT

_RTC_INFEASIBLE  :  Redo Transport Compression infeasible threshold
_THRESHOLD

_SAMPLE_ROWS_PE  :  number of rows per block used for sampling IO
R_BLOCK             optimization

_SCALAR_TYPE_LO  :  threshold for VARCHAR2, NVARCHAR2, and RAW storage as
B_STORAGE_THRES     BLOB
HOLD

_SCATTER_GCS_RE  :  if TRUE, gcs resources are scattered uniformly across
SOURCES             sub pools

_SCATTER_GCS_SH  :  if TRUE, gcs shadows are scattered uniformly across sub
ADOWS               pools

_SCHED_DELAY_MA  :  scheduling delay maximum number of samples
X_SAMPLES

_SCHED_DELAY_ME  :  scheduling delay mesurement sleep us
ASUREMENT_SLEEP
_US

_SCHED_DELAY_OS  :  os tick granularity used by scheduling delay
_TICK_GRANULARI     calculations
TY_US

_SCHED_DELAY_SA  :  scheduling delay sample collection duration threshold
MPLE_COLLECTION     ms
_THRESH_MS

_SCHED_DELAY_SA  :  scheduling delay sampling interval in ms
MPLE_INTERVAL_M
S

_SCN_WAIT_INTER  :  max exponential backoff time for scn wait interface in
FACE_MAX_BACKOF     kta
F_TIME_SECS

_SCN_WAIT_INTER  :  max timeout for scn wait interface in kta
FACE_MAX_TIMEOU
T_SECS

_SDIAG_CRASH     :  sql diag crash
_SECOND_SPARE_P  :  second spare parameter – integer
ARAMETER

_SECUREFILES_BR  :  segment retry before dishonoring retention
EAKRETEN_RETRY

_SECUREFILES_BU  :  securefiles segment insert only optization
LKINSERT

_SECUREFILES_CO  :  securefiles concurrency estimate
NCURRENCY_ESTIM
ATE

_SECUREFILES_FG  :  segment retry before foreground waits
_RETRY

_SECUREFILES_FO  :  securefiles force flush before allocation
RCEFLUSH

_SECUREFILES_ME  :  securefiles memory as percent of SGA
MORY_PERCENTOFS
GA

_SECUREFILES_SP  :  securefiles segment utl optimization
CUTL

_SECUREFILE_LOG  :  Maximum number of open descriptors for securefile log
_NUM_LATCHES

_SECUREFILE_LOG  :  Size of securefile log buffer pool from SGA
_SHARED_POOL_SI
ZE

_SECUREFILE_TIM  :  collect kdlu timers and accumulate per layers
ERS

_SEC_ENABLE_TES  :  Whether to enable the test RPCs
T_RPCS

_SELECTIVITY_FO  :  enable/disable selectivity for storage reduction factor
R_SRF_ENABLED

_SELECT_ANY_DIC  :  Exclude USER$, XS$VERIFIERS, ENC$ and DEFAULT_PWD$ from
TIONARY_SECURIT     SELECT ANY DICTIONARY system privilege
Y_ENABLED

_SELFJOIN_MV_DU  :  control rewrite self-join algorithm
PLICATES

_SELFTUNE_CHECK  :  Self-tune checkpointing lag the tail of the redo log
POINTING_LAG

_SELFTUNE_CHECK  :  Percentage of total physical i/os for self-tune ckpt
POINT_WRITE_PCT

_SEM_PER_SEMID   :  the exact number of semaphores per semaphore set to
allocate

_SEND_AST_TO_FO  :  if TRUE, send ast message to foreground
REGROUND

_SEND_CLOSE_WIT  :  if TRUE, send close with block even with direct sends
H_BLOCK

_SEND_REQUESTS_  :  if TRUE, try to send CR requests to PI buffers
TO_PI

_SERIALIZABLE    :  serializable
_SERIALIZE_LGWR  :  Serialize LGWR SYNC local and remote io
_SYNC_IO

_SERIAL_DIRECT_  :  enable direct read in serial
READ

_SERIAL_LOG_WRI  :  Serialize log write slave I/O
TE_WORKER_IO

_SERIAL_RECOVER  :  force serial recovery or parallel recovery
Y

_SERVICE_CLEANU  :  timeout to peform service cleanup
P_TIMEOUT

_SESSION_ALLOCA  :  one latch per group of sessions
TION_LATCHES

_SESSION_CACHED  :  Number of pl/sql instantiations to cache in a session.
_INSTANTIATIONS

_SESSION_CONTEX  :  session app context size
T_SIZE

_SESSION_IDLE_B  :  one latch per session or a latch per group of sessions
IT_LATCHES

_SESSION_PAGE_E  :  Session Page Extent Size
XTENT

_SESSION_WAIT_H  :  enable session wait history collection
ISTORY

_SET_CONTAINER_  :  set container service
SERVICE

_SET_MGD_RECOVE  :  set mgd recovery state to new value
RY_STATE

_SEVENTEENTH_SP  :  seventeenth spare parameter – string
ARE_PARAMETER

_SEVENTH_SPARE_  :  seventh spare parameter – integer
PARAMETER

_SF_DEFAULT_ENA  :  enable 12g securefile default
BLED

_SGA_ALLOC_SLAV  :  Termination timeout in secs for SA** slaves
ES_TERM_TIMEOUT
_SECS

_SGA_CLEAR_DUMP  :  Allow dumping encrypted blocks in clear for debugging
_SGA_EARLY_TRAC  :  sga early trace event
E

_SGA_LOCKING     :  sga granule locking state
_SHARED_IOP_MAX  :  maximum shared io pool size
_SIZE

_SHARED_IO_POOL  :  Shared IO pool buffer size
_BUF_SIZE

_SHARED_IO_POOL  :  trace kcbi debug info to tracefile
_DEBUG_TRC

_SHARED_IO_POOL  :  Size of shared IO pool
_SIZE

_SHARED_IO_SET_  :  shared io pool size set internal value – overwrite zero
VALUE               user size

_SHARED_POOL_MA  :  shared pool maximum size when auto SGA enabled
X_SIZE

_SHARED_POOL_MI  :  shared pool minimum size when auto SGA enabled
NSIZE_ON

_SHARED_POOL_RE  :  minimum allocation size in bytes for reserved area of
SERVED_MIN_ALLO     shared pool
C

_SHARED_POOL_RE  :  percentage memory of the shared pool allocated for the
SERVED_PCT          reserved area

_SHARED_SERVER_  :  shared server load balance
LOAD_BALANCE

_SHARED_SERVER_  :  number of shared server common queues
NUM_QUEUES

_SHMPROTECT      :  allow mprotect use for shared memory
_SHORT_STACK_TI  :  short stack timeout in ms
MEOUT_MS

_SHOW_MGD_RECOV  :  Show internal managed recovery state
ERY_STATE

_SHRD_QUE_TM_PR  :  number of sharded queue Time Managers to start
OCESSES

_SHRD_QUE_TM_ST  :  Shaded queue statistics collection window duration
ATISTICS_DURATI
ON

_SHRUNK_AGGS_DI  :  percentage of exceptions at which to switch to full
SABLE_THRESHOLD     length aggs

_SHRUNK_AGGS_EN  :  enable use of variable sized buffers for non-distinct
ABLED               aggregates

_SHUTDOWN_COMPL  :  minutes for shutdown operation to wait for sessions to
ETION_TIMEOUT_M     complete
INS

_SIDE_CHANNEL_B  :  number of messages to batch in a side channel message
ATCH_SIZE           (DFS)

_SIDE_CHANNEL_B  :  timeout before shipping out the batched side
ATCH_TIMEOUT        channelmessages in seconds

_SIDE_CHANNEL_B  :  timeout before shipping out the batched side
ATCH_TIMEOUT_MS     channelmessages in milliseconds

_SIMPLE_VIEW_ME  :  control simple view merging performed by the optimizer
RGING

_SIMULATED_LOG_  :  Simulated latency of log writes (usecs)
WRITE_USECS

_SIMULATE_DISK_  :  Enables skgfr to report simulated disk sector size
SECTORSIZE

_SIMULATE_IO_WA  :  Simulate I/O wait to test segment advisor
IT

_SIMULATE_MEM_T  :  simulate auto memory sga/pga transfers
RANSFER

_SIMULATOR_BUCK  :  LRU bucket minimum delta
ET_MINDELTA

_SIMULATOR_INTE  :  simulator internal bound percent
RNAL_BOUND

_SIMULATOR_LRU_  :  LRU list rebalance threshold (size)
REBALANCE_SIZTH
R

_SIMULATOR_LRU_  :  LRU list rebalance threshold (count)
REBALANCE_THRES
H

_SIMULATOR_LRU_  :  LRU scan count
SCAN_COUNT

_SIMULATOR_PIN_  :  maximum count of invalid chunks on pin list
INVAL_MAXCNT

_SIMULATOR_RESE  :  simulator reserved heap count
RVED_HEAP_COUNT

_SIMULATOR_RESE  :  simulator reserved object count
RVED_OBJ_COUNT

_SIMULATOR_SAMP  :  sampling factor for the simulator
LING_FACTOR

_SIMULATOR_UPPE  :  upper bound multiple of pool size
R_BOUND_MULTIPL
E

_SINGLE_PROCESS  :  run without detached processes
_SIOP_FLASHBACK  :  Shared IO pool flashback io completion scan depth
_SCANDEPTH

_SIOP_PERC_OF_B  :  percentange * 100 of cache to transfer to shared io
C_X100              pool

_SIXTEENTH_SPAR  :  sixteenth spare parameter – string
E_PARAMETER

_SIXTH_SPARE_PA  :  sixth spare parameter – integer
RAMETER

_SKGXPG_LAST_PA  :  last defined skgxpg parameter – oss
RAMETER

_SKGXP_ANT_OPTI  :  SKGXP ANT options (oss)
ONS

_SKGXP_CTX_FLAG  :  IPC debug options flags (oss)
S1

_SKGXP_CTX_FLAG  :  IPC debug options flags mask (oss)
S1MASK

_SKGXP_DYNAMIC_  :  IPC protocol override
PROTOCOL            (!0/-1=*,2=UDP,3=RDS,0x1000=ipc_X)

_SKGXP_GEN_ANT_  :  VRPC request timeout when ANT disabled
OFF_RPC_TIMEOUT
_IN_SEC

_SKGXP_GEN_ANT_  :  ANT protocol ping miss count
PING_MISSCOUNT

_SKGXP_GEN_RPC_  :  ANT ping protocol miss count
NO_PATH_CHECK_I
N_SEC

_SKGXP_GEN_RPC_  :  VRPC request timeout when ANT enabled
TIMEOUT_IN_SEC

_SKGXP_INETS     :  limit SKGXP networks (oss)
_SKGXP_MIN_RPC_  :  IPC threshold for rpc rcv zcpy operation (default = 0 –
RCV_ZCPY_LEN        disabled)

_SKGXP_MIN_ZCPY  :  IPC threshold for zcpy operation (default = 0 –
_LEN                disabled)

_SKGXP_REAPING   :  tune skgxp OSD reaping limit
_SKGXP_RGN_PORT  :  region socket limits (0xFFFFNNXX): F=flags, N=min,
S                   X=max

_SKGXP_SPARE_PA  :  ipc oss spare parameter 1
RAM1

_SKGXP_SPARE_PA  :  ipc oss spare parameter 2
RAM2

_SKGXP_SPARE_PA  :  ipc oss spare parameter 3
RAM3

_SKGXP_SPARE_PA  :  ipc oss spare parameter 4
RAM4

_SKGXP_SPARE_PA  :  ipc oss spare parameter 5
RAM5

_SKGXP_UDP_ACH_  :  time in minutes before idle ach’s are reaped
REAPING_TIME

_SKGXP_UDP_ACK_  :  Enables delayed acks
DELAY

_SKGXP_UDP_ENAB  :  Enables dynamic credit management
LE_DYNAMIC_CRED
IT_MGMT

_SKGXP_UDP_HIWA  :  ach hiwat mark warning interval
T_WARN

_SKGXP_UDP_INTE  :  time in seconds between interface detection checks
RFACE_DETECTION
_TIME_SECS

_SKGXP_UDP_KEEP  :  connection idle time in seconds before keep alive is
_ALIVE_PING_TIM     initiated. min: 30 sec max: 1800 sec default: 300 sec
ER_SECS

_SKGXP_UDP_LMP_  :  MTU size for UDP LMP testing
MTUSIZE

_SKGXP_UDP_LMP_  :  enable UDP long message protection
ON

_SKGXP_UDP_TIME  :  diagnostic log buffering space (in bytes) for timed
D_WAIT_BUFFERIN     wait (0 means unbufferd
G

_SKGXP_UDP_TIME  :  time in seconds before timed wait is invoked
D_WAIT_SECONDS

_SKGXP_UDP_USE_  :  disable use of high speek timer
TCB

_SKGXP_ZCPY_FLA  :  IPC zcpy options flags
GS

_SKIP_ACFS_CHEC  :  Override checking if on an ACFS file system
KS

_SKIP_ASSUME_MS  :  if TRUE, skip assume message for consigns at the master
G

_SKIP_TRSTAMP_C  :  Skip terminal recovery stamp check
HECK

_SLAVE_MAPPING_  :  enable slave mapping when TRUE
ENABLED

_SLAVE_MAPPING_  :  force the number of slave group in a slave mapper
GROUP_SIZE

_SLAVE_MAPPING_  :  maximum skew before slave mapping is disabled
SKEW_RATIO

_SMALL_TABLE_TH  :  lower threshold level of table size for direct reads
RESHOLD

_SMM_ADVICE_ENA  :  if TRUE, enable v$pga_advice
BLED

_SMM_ADVICE_LOG  :  overwrites default size of the PGA advice workarea
_SIZE               history log

_SMM_AUTO_COST_  :  if TRUE, use the AUTO size policy cost functions
ENABLED

_SMM_AUTO_MAX_I  :  Maximum IO size (in KB) used by sort/hash-join in auto
O_SIZE              mode

_SMM_AUTO_MIN_I  :  Minimum IO size (in KB) used by sort/hash-join in auto
O_SIZE              mode

_SMM_BOUND       :  overwrites memory manager automatically computed bound
_SMM_CONTROL     :  provides controls on the memory manager
_SMM_FREEABLE_R  :  value in KB of the instance freeable PGA memory to
ETAIN               retain

_SMM_ISORT_CAP   :  maximum work area for insertion sort(v1)
_SMM_MAX_SIZE    :  maximum work area size in auto mode (serial)
_SMM_MAX_SIZE_S  :  static maximum work area size in auto mode (serial)
TATIC

_SMM_MIN_SIZE    :  minimum work area size in auto mode
_SMM_PX_MAX_SIZ  :  maximum work area size in auto mode (global)
E

_SMM_PX_MAX_SIZ  :  static maximum work area size in auto mode (global)
E_STATIC

_SMM_RETAIN_SIZ  :  work area retain size in SGA for shared server sessions
E                   (0 for AUTO)

_SMM_TRACE       :  Turn on/off tracing for SQL memory manager
_SMON_INTERNAL_  :  limit of SMON internal errors
ERRLIMIT

_SMON_UNDO_SEG_  :  limit of SMON continous undo segments re-scan
RESCAN_LIMIT

_SMU_DEBUG_MODE  :  <debug-flag> – set debug event for testing SMU
operations

_SMU_ERROR_SIMU  :  site ID of error simulation in KTU code
LATION_SITE

_SMU_ERROR_SIMU  :  error type for error simulation in KTU code
LATION_TYPE

_SMU_TIMEOUTS    :  comma-separated *AND double-quoted* list of AUM
timeouts: mql, tur, sess_exprn, qry_exprn, slot_intvl

_SNAPSHOT_RECOV  :  enable/disable snapshot recovery
ERY_ENABLED

_SORT_ELIMINATI  :  cost ratio for sort eimination under first_rows mode
ON_COST_RATIO

_SORT_MULTIBLOC  :  multi-block read count for sort
K_READ_COUNT

_SORT_SPILL_THR  :  force sort to spill to disk each time this many rows
ESHOLD              are received

_SORT_SYNC_MIN_  :  controls the size of mininum run size for synchronized
SPILLSIZE           spill (in kb)

_SORT_SYNC_MIN_  :  controls the mininum spill size for synchronized spill
SPILL_THRESHOLD     (in percent)

_SPACE_ALIGN_SI  :  space align size
ZE

_SPARE_TEST_PAR  :  Spare test parameter
AMETER

_SPAWN_DIAG_OPT  :  thread spawn diagnostic options
S

_SPAWN_DIAG_THR  :  thread spawn diagnostic minimal threshold in seconds
ESH_SECS

_SPIN_COUNT      :  Amount to spin waiting for a latch
_SPR_MAX_RULES   :  maximum number of rules in sql spreadsheet
_SPR_PUSH_PRED_  :  push predicates through reference spreadsheet
REFSPR

_SPR_USE_AW_AS   :  enable AW for hash table in spreadsheet
_SPR_USE_HASH_T  :  use hash table for spreadsheet
ABLE

_SQLEXEC_PROGRE  :  sql execution progression monitoring cost threshold
SSION_COST

_SQLMON_BINDS_X  :  format of column binds_xml in [G]V$SQL_MONITOR
ML_FORMAT

_SQLMON_MAX_PLA  :  Maximum number of plans entry that can be monitored.
N                   Defaults to 20 per CPU

_SQLMON_MAX_PLA  :  Number of plan lines beyond which a plan cannot be
NLINES              monitored

_SQLMON_RECYCLE  :  Minimum time (in s) to wait before a plan entry can be
_TIME               recycled

_SQLMON_THRESHO  :  CPU/IO time threshold before a statement is monitored.
LD                  0 is disabled

_SQLTUNE_CATEGO  :  Parsed category qualifier for applying hintsets
RY_PARSED

_SQL_ANALYZE_EN  :  SQL Analyze Autonomous Transaction control parameter
ABLE_AUTO_TXN

_SQL_ANALYZE_PA  :  SQL Analyze Parse Model control parameter
RSE_MODEL

_SQL_COMPATIBIL  :  sql compatability bit vector
ITY

_SQL_CONNECT_CA  :  SQL Connect Capability Table Override
PABILITY_OVERRI
DE

_SQL_CONNECT_CA  :  SQL Connect Capability Table (testing only)
PABILITY_TABLE

_SQL_DIAG_REPO_  :  duarations where sql diag repository are retained
ORIGIN

_SQL_DIAG_REPO_  :  retain sql diag repository to cursor or not
RETAIN

_SQL_HASH_DEBUG  :  Hash value of the SQL statement to debug
_SQL_HVSHARE_DE  :  control hash value sharing debug level
BUG

_SQL_HVSHARE_TH  :  threshold to control hash value sharing across
RESHOLD             operators

_SQL_MODEL_UNFO  :  specifies compile-time unfolding of sql model forloops
LD_FORLOOPS

_SQL_NCG_MODE    :  Optimization mode for SQL NCG
_SQL_PLAN_DIREC  :  controls internal SQL Plan Directive management
TIVE_MGMT_CONTR     activities
OL

_SQL_PLAN_MANAG  :  controls various internal SQL Plan Management
EMENT_CONTROL       algorithms

_SQL_SHOW_EXPRE  :  show expression evalution as shared hash producer in
VAL                 plan

_SRVNTFN_JOBSUB  :  srvntfn job submit interval
MIT_INTERVAL

_SRVNTFN_JOB_DE  :  srvntfn job deq timeout
Q_TIMEOUT

_SRVNTFN_MAX_CO  :  srvntfn max concurrent jobs
NCURRENT_JOBS

_SRVNTFN_Q_MSGC  :  srvntfn q msg count for job exit
OUNT

_SRVNTFN_Q_MSGC  :  srvntfn q msg count increase for job submit
OUNT_INC

_SSCR_DIR        :  Session State Capture and Restore DIRectory object
_SSCR_OSDIR      :  Session State Capture and Restore OS DIRectory
_STACK_GUARD_LE  :  stack guard level
VEL

_STANDBY_CAUSAL  :  readable standby causal heartbeat timeout
_HEARTBEAT_TIME
OUT

_STANDBY_FLUSH_  :  standby flush mode
MODE

_STANDBY_IMPLIC  :  minutes to wait for redo during standby implicit
IT_RCV_TIMEOUT      recovery

_STANDBY_SWITCH  :  Number of secords for standby switchover enqueue
OVER_TIMEOUT        timeout

_STATIC_BACKGRO  :  static backgrounds
UNDS

_STATISTICS_BAS  :  enable/disable the use of statistics for storage
ED_SRF_ENABLED      reduction factor

_STAT_AGGS_ONE_  :  enable one pass algorithm for variance-related
PASS_ALGORITHM      functions

_STA_CONTROL     :  SQL Tuning Advisory control parameter
_STEP_DOWN_LIMI  :  step down limit in percentage
T_IN_PCT

_STREAMS_POOL_M  :  streams pool maximum size when auto SGA enabled
AX_SIZE

_SUBQUERY_PRUNI  :  subquery pruning cost factor
NG_COST_FACTOR

_SUBQUERY_PRUNI  :  enable the use of subquery predicates to perform
NG_ENABLED          pruning

_SUBQUERY_PRUNI  :  enable the use of subquery predicates with MVs to
NG_MV_ENABLED       perform pruning

_SUBQUERY_PRUNI  :  subquery pruning reduction factor
NG_REDUCTION

_SUPPRESS_IDENT  :  supress owner index name err msg
IFIERS_ON_DUPKE
Y

_SWITCHOVER_TIM  :  Switchover timeout in minutes
EOUT

_SWITCHOVER_TO_  :  option for graceful switchover to standby
STANDBY_OPTION

_SWITCHOVER_TO_  :  Switchover to standby switches log for open redo
STANDBY_SWITCH_     threads
LOG

_SWITCH_CURRENT  :  switch current uses scan scn
_SCAN_SCN

_SWRF_METRIC_FR  :  Enable/disable SWRF Metric Frequent Mode Collection
EQUENT_MODE

_SWRF_MMON_DBFU  :  Enable/disable SWRF MMON DB Feature Usage
S

_SWRF_MMON_FLUS  :  Enable/disable SWRF MMON FLushing
H

_SWRF_MMON_METR  :  Enable/disable SWRF MMON Metrics Collection
ICS

_SWRF_ON_DISK_E  :  Parameter to enable/disable SWRF
NABLED

_SWRF_TEST_ACTI  :  test action parameter for SWRF
ON

_SWRF_TEST_DBFU  :  Enable/disable DB Feature Usage Testing
S

_SYNC_PRIMARY_W  :  wait time for alter session sync with primary
AIT_TIME

_SYNONYM_REPOIN  :  whether to trace metadata comparisons for synonym
T_TRACING           repointing

_SYSAUX_TEST_PA  :  test parameter for SYSAUX
RAM

_SYSTEM_API_INT  :  enable debug tracing for system api interception
ERCEPTION_DEBUG

_SYSTEM_INDEX_C  :  optimizer percent system index caching
ACHING

_SYSTEM_TRIG_EN  :  are system triggers enabled
ABLED

_SYS_LOGON_DELA  :  failed logon delay for sys
Y

_TABLESPACES_PE  :  estimated number of tablespaces manipulated by each
R_TRANSACTION       transaction

_TABLE_LOOKUP_P  :  table lookup prefetch vector size
REFETCH_SIZE

_TABLE_LOOKUP_P  :  table lookup prefetch threshold
REFETCH_THRESH

_TABLE_SCAN_COS  :  bump estimated full table scan and index ffs cost by
T_PLUS_ONE          one

_TARGET_LOG_WRI  :  Do log write if this many redo blocks in buffer
TE_SIZE             (auto=0)

_TARGET_LOG_WRI  :  How long LGWR will wait for redo to accumulate (csecs)
TE_SIZE_TIMEOUT

_TARGET_RBA_MAX  :  target rba max log lag percentage
_LAG_PERCENTAGE

_TA_LNS_WAIT_FO  :  LNS Wait time for arhcived version of online log
R_ARCH_LOG

_TDB_DEBUG_MODE  :  set debug mode for testing transportable database
_TEMP_TRAN_BLOC  :  number of blocks for a dimension before we temp
K_THRESHOLD         transform

_TEMP_TRAN_CACH  :  determines if temp table is created with cache option
E

_TEMP_UNDO_DISA  :  is temp undo disabled on ADG
BLE_ADG

_TENTH_SPARE_PA  :  tenth spare parameter – integer
RAMETER

_TEST_HM_EXTENT  :  heatmap related – to be used by oracle dev only
_MAP

_TEST_KSUSIGSKI  :  test the function ksusigskip
P

_TEST_PARAM_1    :  test parmeter 1 – integer
_TEST_PARAM_2    :  test parameter 2 – string
_TEST_PARAM_3    :  test parameter 3 – string
_TEST_PARAM_4    :  test parameter 4 – string list
_TEST_PARAM_5    :  test parmeter 5 – deprecated integer
_TEST_PARAM_6    :  test parmeter 6 – size (ub8)
_TEST_PARAM_7    :  test parameter 7 – big integer list
_TEST_PARAM_8    :  test parameter 8 – cdb tests
_THIRD_SPARE_PA  :  third spare parameter – integer
RAMETER

_THIRTEENTH_SPA  :  thirteenth spare parameter – integer
RE_PARAMETER

_THREAD_STATE_C  :  Thread state change timeout for PnP instance (in sec)
HANGE_TIMEOUT_P
NP

_THRESHOLD_ALER  :  if 1, issue threshold-based alerts
TS_ENABLE

_TIMEMODEL_COLL  :  enable timemodel collection
ECTION

_TIMEOUT_ACTION  :  enables or disables KSU timeout actions
S_ENABLED

_TIMER_PRECISIO  :  VKTM timer precision in milli-sec
N

_TIME_BASED_RCV  :  time-based incremental recovery checkpoint target in
_CKPT_TARGET        sec

_TIME_BASED_RCV  :  time-based incremental recovery file header update
_HDR_UPDATE_INT     interval in sec
ERVAL

_TOTAL_LARGE_EX  :  Total memory for allocating large extents
TENT_MEMORY

_TQ_DUMP_PERIOD  :  time period for duping of TQ statistics (s)
_TRACE_BUFFERS   :  trace buffer sizes per process
_TRACE_BUFFER_W  :  trace buffer busy wait timeouts
AIT_TIMEOUTS

_TRACE_DUMP_ALL  :  if TRUE on error buckets of all processes will be
_PROCS              dumped to the current trace file

_TRACE_DUMP_CLI  :  if TRUE dump client (ie. non-kst) buckets
ENT_BUCKETS

_TRACE_DUMP_CUR  :  if TRUE on error just dump our process bucket
_PROC_ONLY

_TRACE_DUMP_STA  :  if TRUE filter trace dumps to always loaded dlls
TIC_ONLY

_TRACE_EVENTS    :  trace events enabled at startup
_TRACE_FILES_PU  :  Create publicly accessible trace files
BLIC

_TRACE_KQLIDP    :  trace kqlidp0 operation
_TRACE_KTFS      :  Trace ILM Stats Tracking
_TRACE_KTFS_MEM  :  Debug memleak
_TRACE_NAVIGATI  :  enabling trace navigation linking
ON_SCOPE

_TRACE_PIN_TIME  :  trace how long a current pin is held
_TRACE_POOL_SIZ  :  trace pool size in bytes
E

_TRACE_PROCESSE  :  enable KST tracing in process
S

_TRACE_TEMP      :  Trace Tempspace Management
_TRACE_VIRTUAL_  :  trace virtual columns exprs
COLUMNS

_TRACK_METRICS_  :  Enable/disable Metrics Memory Tracking
MEMORY

_TRANSACTION_AU  :  transaction auditing records generated in the redo log
DITING

_TRANSACTION_RE  :  max number of parallel recovery slaves that may be used
COVERY_SERVERS

_TRANSIENT_LOGI  :  clear KCCDI2HMRP flag during standby recovery
CAL_CLEAR_HOLD_
MRP_BIT

_TRUNCATE_OPTIM  :  do truncate optimization if set to TRUE
IZATION_ENABLED

_TSENC_OBFUSCAT  :  Encryption key obfuscation in memory
E_KEY

_TSENC_TRACING   :  Enable TS encryption tracing
_TSM_CONNECT_ST  :  TSM test connect string
RING

_TSM_DISABLE_AU  :  Disable TSM auto cleanup actions
TO_CLEANUP

_TSTZ_LOCALTIME  :  Should TTC not convert to LocalTime to preserve
_BYPASS             Timestamp with Timezone values

_TTS_ALLOW_CHAR  :  allow plugging in a tablespace with an incompatible
SET_MISMATCH        character set

_TWELFTH_SPARE_  :  twelfth spare parameter – integer
PARAMETER

_TWENTIETH_SPAR  :  twentieth spare parameter – string
E_PARAMETER

_TWENTY-EIGHTH_  :  twenty-eighth spare parameter – boolean
SPARE_PARAMETER

_TWENTY-FIFTH_S  :  twenty-fifth spare parameter – string list
PARE_PARAMETER

_TWENTY-FIRST_S  :  twenty-first spare parameter – string list
PARE_PARAMETER

_TWENTY-FOURTH_  :  twenty-fourth spare parameter – string list
SPARE_PARAMETER

_TWENTY-SECOND_  :  twenty-second spare parameter – string list
SPARE_PARAMETER

_TWENTY-SEVENTH  :  twenty-seventh spare parameter – boolean
_SPARE_PARAMETE
R

_TWENTY-SIXTH_S  :  twenty-sixth spare parameter – boolean
PARE_PARAMETER

_TWENTY-THIRD_S  :  twenty-third spare parameter – string list
PARE_PARAMETER

_TWO_PASS        :  enable two-pass thread recovery
_TWO_PASS_REVER  :  uses two-pass reverse polish alg. to generate canonical
SE_POLISH_ENABL     forms
ED

_TXN_CONTROL_TR  :  size the in-memory buffer size of txn control
ACE_BUF_SIZE

_UGA_CGA_LARGE_  :  UGA/CGA large extent size
EXTENT_SIZE

_ULTRAFAST_LATC  :  maintain fast-path statistics for ultrafast latches
H_STATISTICS

_UNDO_AUTOTUNE   :  enable auto tuning of undo_retention
_UNDO_BLOCK_COM  :  enable undo block compression
PRESSION

_UNDO_DEBUG_MOD  :  debug flag for undo related operations
E

_UNDO_DEBUG_USA  :  invoke undo usage functions for testing
GE

_UNIFIED_AUDIT_  :  Unified Audit SGA Queue Flush Interval
FLUSH_INTERVAL

_UNIFIED_AUDIT_  :  Unified Audit SGA Queue Flush Threshold
FLUSH_THRESHOLD

_UNIFIED_AUDIT_  :  Disable Default Unified Audit Policies on DB Create
POLICY_DISABLED

_UNION_REWRITE_  :  expand queries with GSets into UNIONs for rewrite
FOR_GS

_UNNEST_SUBQUER  :  enables unnesting of complex subqueries
Y

_UNUSED_BLOCK_C  :  enable unused block compression
OMPRESSION

_UPDATE_DATAFIL  :  user requested update of datafile headers of locally
E_HEADERS_WITH_     managed datafiles with space information
SPACE_INFORMATI
ON

_UPDDEL_DBA_HAS  :  controls masking of lower order bits in DBA
H_MASK_BITS

_USE_ADAPTIVE_L  :  Adaptively switch between post/wait and polling
OG_FILE_SYNC

_USE_BEST_FIT    :  use best fit to allocate space
_USE_COLUMN_STA  :  enable the use of column statistics for DDP functions
TS_FOR_FUNCTION

_USE_FIPS_MODE   :  Enable use of crypographic libraries in FIPS mode
_USE_HIDDEN_PAR  :  use hidden partitions
TITIONS

_USE_HYBRID_ENC  :  Enable platform optimized encryption in hybrid mode
RYPTION_MODE

_USE_ISM         :  Enable Shared Page Tables – ISM
_USE_ISM_FOR_PG  :  Use ISM for allocating large extents
A

_USE_NOSEGMENT_  :  use nosegment indexes in explain plan
INDEXES

_USE_PLATFORM_C  :  Enable platform optimized compression implementation
OMPRESSION_LIB

_USE_PLATFORM_E  :  Enable platform optimized encryption implementation
NCRYPTION_LIB

_USE_REALFREE_H  :  use real-free based allocator for PGA memory
EAP

_USE_SEQ_PROCES  :  whether to use process local seq cache
S_CACHE

_USE_SINGLE_LOG  :  Use a single process for redo log writing
_WRITER

_USE_VECTOR_POS  :  use vector post
T

_USE_ZERO_COPY_  :  Should network vector IO interface be used for data
IO                  transfer

_UTLMMIG_TABLE_  :  enable/disable utlmmig table stats gathering at upgrade
STATS_GATHERING

_UTS_FIRST_SEGM  :  Should we retain the first trace segment
ENT_RETAIN

_UTS_FIRST_SEGM  :  Maximum size (in bytes) of first segments
ENT_SIZE

_UTS_TRACE_DISK  :  Trace disk threshold parameter
_THRESHOLD

_UTS_TRACE_SEGM  :  Maximum number of trace segments
ENTS

_UTS_TRACE_SEGM  :  Maximum size (in bytes) of a trace segment
ENT_SIZE

_VALIDATE_FLASH  :  Scan database to validate result of flashback database
BACK_DATABASE

_VALIDATE_METRI  :  Enable/disable SGA Metric Structure validation
C_GROUPS

_VALIDATE_READM  :  validate redo blocks read from in-memory log buffer
EM_REDO

_VENDOR_LIB_LOC  :  Vendor library search root directory
_VERIFY_FG_LOG_  :  LGWR verifies redo checksums generated by foreground
CHECKSUM            processes

_VERIFY_FLASHBA  :  Verify that the redo logs needed for flashback are
CK_REDO             available

_VERIFY_UNDO_QU  :  TRUE – verify consistency of undo quota statistics
OTA

_VERY_LARGE_OBJ  :  upper threshold level of object size for direct reads
ECT_THRESHOLD

_VERY_LARGE_PAR  :  very_large_partitioned_table
TITIONED_TABLE

_VIRTUAL_COLUMN  :  overload virtual columns expression
_OVERLOAD_ALLOW
ED

_VKRM_SCHEDULE_  :  VKRM scheduling interval
INTERVAL

_VKTM_ASSERT_TH  :  soft assert threshold VKTM timer drift
RESH

_WAIT_BREAKUP_T  :  Wait breakup threshold (in centiseconds)
HRESHOLD_CSECS

_WAIT_BREAKUP_T  :  Wait breakup time (in centiseconds)
IME_CSECS

_WAIT_FOR_SYNC   :  wait for sync on commit MUST BE ALWAYS TRUE
_WAIT_SAMPLES_M  :  Wait Samples maximum sections
AX_SECTIONS

_WAIT_SAMPLES_M  :  Wait Samples maximum time in seconds
AX_TIME_SECS

_WAIT_TRACKER_I  :  Wait Tracker number of seconds per interval
NTERVAL_SECS

_WAIT_TRACKER_N  :  Wait Tracker number of intervals
UM_INTERVALS

_WAIT_YIELD_HP_  :  Wait Yield – High Priority Mode
MODE

_WAIT_YIELD_MOD  :  Wait Yield – Mode
E

_WAIT_YIELD_SLE  :  Wait Yield – Sleep Frequency
EP_FREQ

_WAIT_YIELD_SLE  :  Wait Yield – Sleep Time (in milliseconds)
EP_TIME_MSECS

_WAIT_YIELD_YIE  :  Wait Yield – Yield Frequency
LD_FREQ

_WALK_INSERT_TH  :  maximum number of unusable blocks to walk across
RESHOLD             freelist

_WATCHPOINT_ON   :  is the watchpointing feature turned on?
_WCR_CONTROL     :  Oracle internal test WCR parameter used ONLY for
testing!

_WCR_GRV_CACHE_  :  Oracle internal: Set the replay cache size for
SIZE                WRR$_REPLAY_DATA.

_WCR_SEQ_CACHE_  :  Oracle internal: Set the replay cache size for
SIZE                WRR$_REPLAY_SEQ_DATA.

_WIDETAB_COMP_E  :  wide table compression enabled
NABLED

_WINDOWFUNC_OPT  :  settings for window function optimizations
IMIZATION_SETTI
NGS

_WITH_SUBQUERY   :  WITH subquery transformation
_WRITE_CLONES    :  write clones flag
_XA_INTERNAL_RE  :  number of internal retries for xa transactions
TRIES

_XDS_MAX_CHILD_  :  Maximum number of XDS user-specific child cursors
CURSORS

_XENGEM_DEVNAME  :  override default VM GEM device name used by skgvm
_XENGEM_DIAGMOD  :  set to OFF to disable VM GEM support and
E                   functionalities

_XENGEM_ENABLED  :  Enable OVM GEM support
_XPL_PEEKED_BIN  :  maximum bytes for logging peeked bind values for
DS_LOG_SIZE         V$SQL_PLAN (0 = OFF)

_XPL_TRACE       :  Explain Plan tracing parameter
_XSOLAPI_AUTO_M  :  OLAP API lower bound for auto materialization.
ATERIALIZATION_
BOUND

_XSOLAPI_AUTO_M  :  OLAP API behavior for auto materialization
ATERIALIZATION_
TYPE

_XSOLAPI_BUILD_  :  OLAP API output build info to trace file
TRACE

_XSOLAPI_DEBUG_  :  OLAP API debug output disposition
OUTPUT

_XSOLAPI_DENSIF  :  OLAP API cube densification
Y_CUBES

_XSOLAPI_DIMENS  :  OLAP API symmetric overfetch
ION_GROUP_CREAT
ION

_XSOLAPI_DML_TR  :  OLAP API output dml commands and expressions to trace
ACE                 file

_XSOLAPI_FETCH_  :  OLAP API fetch type
TYPE

_XSOLAPI_FIX_VP  :  OLAP API Enable vptr fixing logic in shared server mode
TRS

_XSOLAPI_GENERA  :  OLAP API generates WITH clause?
TE_WITH_CLAUSE

_XSOLAPI_HIERAR  :  OLAP API hierarchy value type
CHY_VALUE_TYPE

_XSOLAPI_LOAD_A  :  When to load OLAP API library at server process start
T_PROCESS_START

_XSOLAPI_MATERI  :  OLAP API min number of rows required to use rowcache in
ALIZATION_ROWCA     query materialization
CHE_MIN_ROWS_FO
R_USE

_XSOLAPI_MATERI  :  OLAP API Enable source materialization
ALIZE_SOURCES

_XSOLAPI_METADA  :  OLAP API metadata reader mode
TA_READER_MODE

_XSOLAPI_ODBO_M  :  OLAP API uses ODBO mode?
ODE

_XSOLAPI_OPTIMI  :  OLAP API optimizes suppressions?
ZE_SUPPRESSION

_XSOLAPI_OPT_AW  :  OLAP API enables AW position and count optimization?
_POSITION

_XSOLAPI_PRECOM  :  OLAP API precomputes subqueries?
PUTE_SUBQUERY

_XSOLAPI_REMOVE  :  OLAP API removes columns for materialization?
_COLUMNS_FOR_MA
TERIALIZATION

_XSOLAPI_SET_NL  :  OLAP API sets NLS?
S

_XSOLAPI_SHARE_  :  OLAP API share executors?
EXECUTORS

_XSOLAPI_SOURCE  :  OLAP API output Source definitions to trace file
_TRACE

_XSOLAPI_SQL_AL  :  OLAP API multi-join non-base hints
L_MULTI_JOIN_NO
N_BASE_HINTS

_XSOLAPI_SQL_AL  :  OLAP API non-base hints
L_NON_BASE_HINT
S

_XSOLAPI_SQL_AU  :  OLAP API enable automatic dimension hints
TO_DIMENSION_HI
NTS

_XSOLAPI_SQL_AU  :  OLAP API enable automatic measure hints
TO_MEASURE_HINT
S

_XSOLAPI_SQL_DI  :  OLAP API dimension hints
MENSION_HINTS

_XSOLAPI_SQL_EN  :  OLAP API enables AW join?
ABLE_AW_JOIN

_XSOLAPI_SQL_EN  :  OLAP API enables AW QDR merge?
ABLE_AW_QDR_MER
GE

_XSOLAPI_SQL_HI  :  OLAP API generic hints
NTS

_XSOLAPI_SQL_ME  :  OLAP API measure hints
ASURE_HINTS

_XSOLAPI_SQL_MI  :  OLAP API SQL MINUS threshold
NUS_THRESHOLD

_XSOLAPI_SQL_OP  :  OLAP API enable optimization
TIMIZE

_XSOLAPI_SQL_PR  :  OLAP API prepare statement cache size
EPARE_STMT_CACH
E_SIZE

_XSOLAPI_SQL_RE  :  OLAP API enable remove unused columns optimizations
MOVE_COLUMNS

_XSOLAPI_SQL_RE  :  OLAP API result set cache size
SULT_SET_CACHE_
SIZE

_XSOLAPI_SQL_SY  :  OLAP API enable symmetric predicate for dimension
MMETRIC_PREDICA     groups
TE

_XSOLAPI_SQL_TO  :  OLAP API top dimension hints
P_DIMENSION_HIN
TS

_XSOLAPI_SQL_TO  :  OLAP API top measure hints
P_MEASURE_HINTS

_XSOLAPI_SQL_US  :  OLAP API enable bind variables optimization
E_BIND_VARIABLE
S

_XSOLAPI_STRING  :  OLAP API stringifies order levels?
IFY_ORDER_LEVEL
S

_XSOLAPI_SUPPOR  :  OLAP API MTM mapping classes supported?
T_MTM

_XSOLAPI_SUPPRE  :  OLAP API suppression AW mask threshold
SSION_AW_MASK_T
HRESHOLD

_XSOLAPI_SUPPRE  :  OLAP API suppression chunk size
SSION_CHUNK_SIZ
E

_XSOLAPI_USE_MO  :  OLAP API uses models?
DELS

_XSOLAPI_USE_OL  :  OLAP API uses OLAP DML?
AP_DML

_XSOLAPI_USE_OL  :  OLAP API uses OLAP DML for rank?
AP_DML_FOR_RANK

_XS_CLEANUP_TAS  :  Triton Session Cleanup
K

_XS_DISPATCHER_  :  XS dispatcher only mode
ONLY

_XTBUFFER_SIZE   :  buffer size in KB needed for populate/query operation
_XTTS_ALLOW_PRE  :  allow cross platform for pre10 compatible tablespace
10

_XTTS_SET_PLATF  :  set cross platform info during file header read
ORM_INFO

_XT_COVERAGE     :  external tables code coverage parameter
_XT_TRACE        :  external tables trace parameter
_ZONEMAP_CONTRO  :  control different uses/algorithms related to zonemaps
L

_ZONEMAP_STALEN  :  control the staleness tracking of zonemaps via trigger
ESS_TRACKING

_ZONEMAP_USE_EN  :  enable the use of zonemaps for IO pruning
ABLED

__DATA_TRANSFER  :  Actual size of data transfer cache
_CACHE_SIZE

__DB_CACHE_SIZE  :  Actual size of DEFAULT buffer pool for standard block
size buffers

__DG_BROKER_SER  :  service names for broker use
VICE_NAMES

__JAVA_POOL_SIZ  :  Actual size in bytes of java pool
E

__LARGE_POOL_SI  :  Actual size in bytes of large pool
ZE

__ORACLE_BASE    :  ORACLE_BASE
__PGA_AGGREGATE  :  Current target size for the aggregate PGA memory
_TARGET             consumed

__SGA_TARGET     :  Actual size of SGA
__SHARED_IO_POO  :  Actual size of shared IO pool
L_SIZE

__SHARED_POOL_S  :  Actual size in bytes of shared pool
IZE

__STREAMS_POOL_  :  Actual size in bytes of streams pool
SIZE

2984 rows selected.

References: Oracle Documentation