oracle 隐含参数

对于oracle,有一些参数参数是隐含的,可能对于大家常规参数都知道什么意思,但是,当oracle需要处理一些不是常规能解决的问题的时候,可能就需要了解隐含参数了,下面这个参数基本包含了oracle所有的隐含参数。这个参是虽然是到oracle 9i,但是oracle10g以后也基本可以使用


O7_DICTIONARY_ACCESSIBILITY 803, 804, 805, 806, 815, 816, 817, 901, 920 Version 7 Dictionary Accessibility Support
_DECUnix_reserved_1 732, 803, 804, 805, 806  
_DECUnix_reserved_2 732, 733, 734, 803, 804, 805, 806  
_DECUnix_reserved_3 732, 733, 734, 734, 803, 804, 805, 806  
_DECUnix_reserved_4 732, 733, 734, 734, 803, 804, 805, 806  
_DECUnix_reserved_5 732, 733, 734, 734, 803, 804, 805, 806  
_DECUnix_reserved_6 732, 733, 734, 734, 803, 804, 805, 806  
_DECUnix_reserved_7 732, 733, 734, 734, 803, 804, 805, 806  
_NUMA_instance_mapping 815, 816, 817, 901, 920 Set of nodes that this instance should run on
_NUMA_pool_size 815, 816, 817, 901, 920 aggregate size in bytes of NUMA pool
_PX_use_large_pool 815, 816, 817, 901, 920 Use Large Pool as source of PX buffers
_abort_recovery_on_join 901, 920 if TRUE, abort recovery on join reconfigurations
_active_standby_fast_reconfiguration 815, 816, 817, 901, 920 if TRUE optimize dlm reconfiguration for active/standby OPS
_adaptive_direct_read 901, 920 Adaptive Direct Read
_adaptive_fetch_enabled 901, 920 enable/disable adaptive fetch in parallel group by
_advanced_dss_features 803, 804, 805, 806, 815, 816, 817, 901 enable advanced dss features
_affinity_on 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enable/disable affinity at run time
_all_shared_dblinks 803, 804, 805, 806, 815, 816, 817, 901, 920 treat all dblinks as shared
_allocate_creation_order 815, 816, 817, 901, 920 should files be examined in creation order during allocation
_allocation_update_interval 901, 920 interval at which successful search in L1 should be updated
_allow_error_simulation 816, 817, 901, 920 Allow error simulation for testing
_allow_read_only_corruption 815, 816, 817, 901, 920 allow read-only open even if database is corrupt
_allow_resetlogs_corruption 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 allow resetlogs even if it will cause corruption
_allow_terminal_recovery_corruption 920 Finish terminal recovery even if it may cause corruption
_always_anti_join 901, 920 always use this method for anti-join when possible
_always_semi_join 901, 920 always use this method for semi-join when possible
_always_star_transformation 803, 804, 805, 806, 815, 816, 817, 901, 920 always favor use of star transformation
_app_ctx_vers 920 enable app ctx versioning
_aq_tm_scanlimit 817, 901 scan limit for Time Managers to clean up IOT
_arch_io_slaves 815, 816, 817, 901, 920 ARCH I/O slaves
_async_bsp 816, 817, 901 if TRUE, BSP flushes log asynchronously (DFS)
_average_dirties_half_life 815, 816, 817  
_async_recovery_claims 901, 920 if TRUE, issue recovery claims asynchronouslyif TRUE, issue recovery claims asynchronously (DFS)
_async_recovery_reads 901, 920 if TRUE, issue recovery reads asynchronouslyif TRUE, issue recovery reads asynchronously (DFS)
_avoid_prepare 901, 920 if TRUE, do not prepare a buffer when the master is localif TRUE, do not prepare a buffer when the master is local (DFS)
_b_tree_bitmap_plans 815, 816, 817, 901, 920 enable the use of bitmap plans for tables w. only B-tree indexes
_backup_disk_io_slaves 815, 816, 817, 901, 920 BACKUP Disk I/O slaves
_backup_io_pool_size 815, 816, 817, 901, 920 memory to reserve from the large pool
_bsp_log_flush 816, 817, 901 if TRUE, flush redo log before serving a CR buffer (DFS)
_bitmap_or_improvement_enabled 920 controls extensions to partition pruning for general predicates
_bump_highwater_mark_count 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 how many blocks should we allocate per free list on advancing HW
_cache_db_files 716, 723, 732, 733, 734  
_bwr_for_flushed_pi 920 if TRUE, generate a BWR for a flushed PI (DFS)
_cgs_send_timeout 901, 920 CGS send timeout value
_check_block_after_checksum 816, 817, 901, 920 perform block check after checksum if both are turned on
_cleanup_rollback_entries 815, 816, 817, 901, 920 no. of undo entries to apply per transaction cleanup
_close_cached_open_cursors 815, 816, 817, 901, 920 close cursors cached by PL/SQL at each commit
_collect_undo_stats 901, 920 Collect Statistics v$undostat
_column_elimination_off 803, 804, 805, 806, 815, 816, 817, 901, 920 turn off predicate-only column elimination
_column_tracking_level 901, 920 column usage tracking
_compatible_no_recovery 815, 816, 817, 901, 920 Database will be compatible unless crash or media recovery is ne
_complex_view_merging 815, 816, 817, 901, 920 enable complex view merging
_controlfile_enqueue_timeout 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 control file enqueue timeout in seconds
_corrupt_blocks_on_stuck_recovery 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_corrupted_rollback_segments 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 corrupted undo segment list
_cost_equality_semi_join 920 enables costing of equality semi-join
_cpu_count 716, 901, 920 current number of cpu's for this instance
_cpu_to_io 815, 816, 817, 901, 920 divisor for converting CPU cost to I/O cost
_cr_deadtime 733, 734, 803, 804, 805, 806  
_cr_server 815, 816, 817  
_cr_server_extn 817  
_cr_grant_global_role 901, 920 if TRUE, grant lock for CR requests when block is in global role
_cr_grant_local_role 901, 920 if TRUE, grant lock for CR using 3way ping when block in local r
_cr_server_log_flush 920 if TRUE, flush redo log before serving a CR buffer (DFS)
_cursor_db_buffers_pinned 803, 804, 805, 806, 815, 816, 817, 901, 920 additional number of buffers a cursor can pin at once
_cursor_plan_enabled 901, 920 enable collection and display of cursor plans
_db_aging_cool_count 815, 816, 817, 901, 920 Touch count set when buffer cooled
_db_aging_freeze_cr 815, 816, 817, 901, 920 Make CR buffers always be too cold to keep in cache
_db_aging_hot_criteria 815, 816, 817, 901, 920 Touch count which sends a buffer to head of replacement list
_db_aging_stay_count 815, 816, 817, 901, 920 Touch count set when buffer moved to head of replacement list
_db_aging_touch_time 815, 816, 817, 901, 920 Touch count which sends a buffer to head of replacement list
_db_always_check_system_ts 816, 817, 901, 920 Always perform block check and checksum for System tablespace
_db_block_buffers 901, 920 Number of database blocks cached in memory: hidden parameter
_db_block_cache_clone 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Always clone data blocks on get (for debugging)
_db_block_cache_map 803, 804, 805, 806, 815, 816, 817, 901 Map / unmap and track reference counts on blocks (for debugging)
_db_block_cache_num_umap 920 number of unmapped buffers (for tracking swap calls on blocks)
_db_block_cache_protect 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 protect database blocks (true only when debugging)
_db_block_check_for_debug 816, 817, 901, 920 Check more and dump block before image for debugging
_db_block_compute_checksums 716  
_db_block_granule_interval 901, 920 number of lru latches
_db_block_hash_buckets 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Number of database block hash buckets
_db_block_hash_latches 816, 817, 901, 920 Number of database block hash latches
_db_block_hi_priority_batch_size 803, 804, 805, 806, 815, 816, 817, 901, 920 Fraction of writes for high priority reasons
_db_block_lru_latches 901, 920 number of lru latches
_db_block_max_cr_dba 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Maximum Allowed Number of CR buffers per dba
_db_block_max_scan_cnt 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_db_block_max_dirty_target 901, 920 Upper bound on modified buffers/recovery reads
_db_block_max_scan_pct 901, 920 Percentage of buffers to inspect when looking for free
_db_block_med_priority_batch_size 803, 804, 805, 806, 815, 816, 817, 901, 920 Fraction of writes for medium priority reasons
_db_block_multiple_hashchain_latches 716, 723, 732, 733, 734  
_db_block_no_idle_writes 732, 733, 734, 803, 804, 805, 806  
_db_block_numa 815, 816, 817, 901, 920 Number of NUMA nodes
_db_block_write_batch 716, 723, 732, 733, 734, 803, 804, 805, 806  
_db_cache_advice 817  
_db_block_prefetch_quota 901, 920 Prefetch quota as a percent of cache size
_db_block_trace_protect 901, 920 trace buffer protect calls
_db_cache_advice_batch_size 920 cache advisory simulation batch size
_db_cache_advice_sample_factor 920 cache advisory sampling factor
_db_file_direct_io_count 901, 920 Sequential I/O buf size
_db_file_noncontig_mblock_read_count 815, 816, 817, 901, 920 number of noncontiguous db blocks to be prefetched
_db_handles 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 System-wide simultaneous buffer operations
_db_handles_cached 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Buffer handles cached each process
_db_large_dirty_queue 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Number of buffers which force dirty queue to be written
_db_no_mount_lock 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901 do not get a mount lock
_db_mttr_advice 920 MTTR advisory
_db_mttr_partitions 920 number of partitions for MTTR advisory
_db_mttr_sample_factor 920 MTTR simulation sampling factor
_db_mttr_sim_target 920 MTTR simulation targets
_db_mttr_sim_trace_size 920 MTTR simulation trace size
_db_mttr_trace_to_alert 920 dump trace entries to alert file
_db_percent_hot_default 815, 816, 817, 901, 920 Percent of default buffer pool considered hot
_db_percent_hot_keep 815, 816, 817, 901, 920 Percent of keep buffer pool considered hot
_db_percent_hot_recycle 815, 816, 817, 901, 920 Percent of recycle buffer pool considered hot
_db_writer_chunk_writes 815, 816, 817, 901, 920 Number of writes DBWR should wait for
_db_writer_histogram_statistics 815, 816, 817, 901, 920 maintain dbwr histogram statistics in x$kcbbhs
_db_writer_max_writes 815, 816, 817, 901, 920 Max number of outstanding DB Writer IOs
_db_writer_scan_depth 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_db_writer_scan_depth_decrement 716, 723, 732, 733, 734, 803, 804, 805, 806, 815  
_db_writer_scan_depth_increment 716, 723, 732, 733, 734, 803, 804, 805, 806, 815  
_db_writer_scan_depth_pct 901, 920 Percentage of LRU buffers for dbwr to scan when looking for dirt
_dbg_proc_startup 920 debug process startup
_dbwr_async_io 815, 816, 817, 901, 920 Enable dbwriter asynchronous writes
_dbwr_scan_interval 816, 817, 901, 920 dbwriter scan interval
_dbwr_slave_batch_size 723, 732, 733, 734  
_dbwr_tracing 815, 816, 817, 901, 920 Enable dbwriter tracing
_debug_sga 716, 723, 732, 733, 734, 803, 804, 805, 806  
_default_non_equality_sel_check 817, 901, 920 sanity check on default selectivity for like/range predicate
_defer_multiple_waiters 815, 816, 817, 901, 920 if TRUE, defer down converts when there were waiters (DFS)
_disable_blocking_waiters 716, 723, 732, 733, 734  
_diag_daemon 901, 920 start DIAG daemon
_disable_file_locks 815, 816, 817, 901, 920 disable file locks for control, data, redo log files
_disable_incremental_checkpoints 803, 804, 805, 806, 815, 816, 817, 901, 920 Disable incremental checkpoints for thread recovery
_disable_kcbhxor_osd 920 disable kcbh(c)xor OSD functionality
_disable_latch_free_SCN_writes_via_32cas 803, 804, 805, 806, 815, 816, 817, 901, 920 disable latch-free SCN writes using 32-bit compare & swap
_disable_latch_free_SCN_writes_via_64cas 803, 804, 805, 806, 815, 816, 817, 901, 920 disable latch-free SCN writes using 64-bit compare & swap
_disable_logging 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Disable logging
_disable_oracle_resilvering 733, 734  
_disable_multiple_block_sizes 901, 920 disable multiple block size support (for debugging)
_disable_odm 920 disable odm feature
_disable_recoverable_recovery 920 Disable the new recoverable recovery mechanism
_disable_sun_rsm 901, 920 Disable IPC OSD support for Sun RSMAPI
_disable_system_state 920 disable system state dump
_discrete_transactions_enabled 815, 816, 817, 901, 920 enable OLTP mode
_disk_get_lock 816, 817  
_dispatcher_rate_scale 901, 920 scale to display rate statistic (100ths of a second)
_dispatcher_rate_ttl 901, 920 time-to-live for rate statistic (100ths of a second)
_distributed_lock_timeout 815, 816, 817, 901 number of seconds a distributed transaction waits for a lock
_distributed_recovery_connection_hold_ti 815, 816, 817  
_dlm_domain 716, 723, 732, 733, 734, 803, 804, 805, 806  
_distributed_recovery_connection_hold_time 901, 920 number of seconds RECO holds outbound connections open
_dlmtrace 901, 920 Trace string of lock types(s)
_domain_index_batch_size 815, 816, 817, 901, 920 maximum number of rows from one call to domain index fetch routi
_domain_index_dml_batch_size 815, 816, 817, 901, 920 maximum number of rows for one call to domain index dml routines
_dss_cache_flush 803, 804, 805, 806, 815, 816, 817, 901, 920 enable full cache flush for parallel execution
_dump_MTTR_to_trace 815, 816, 817, 901, 920 Dump High Availability MTTR infromation to CKPT trace file
_dump_system_state_scope 920 scope of sysstate dump during instance termination
_dynamic_rls_policies 920 rls policies are dynamic
_dynamic_stats_threshold 803, 804, 805, 806, 815, 816, 817, 901, 920 delay threshold (in seconds) between sending statistics messages
_eliminate_common_subexpr 816, 817, 901, 920 enables elimination of common sub-expressions
_enable_NUMA_optimization 815, 816, 817, 901, 920 Enable NUMA specific optimizations
_enable_block_level_transaction_recovery 815, 816, 817, 901, 920 enable block level recovery
_enable_cscn_caching 803, 804, 805, 806, 815, 816, 817, 901, 920 enable commit SCN caching for all transactions
_enable_dba_locking 732, 733, 734  
_enable_default_affinity 815, 816, 817, 901, 920 to enable default implementation of affinity osds
_enable_kgh_policy 901, 920 temporary to disable/enable kgh policy
_enable_list_io 815, 816, 817, 901, 920 Enable List I/O
_enable_multi_statement_pdml 803, 804, 805, 806  
_enable_multitable_sampling 815, 816, 817, 901, 920 enable multitable sampling
_enable_type_dep_selectivity 816, 817, 901, 920 enable type dependent selectivity estimates
_enqueue_debug_multi_instance 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 debug enqueue multi instance
_enqueue_hash 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enqueue hash table length
_enqueue_hash_chain_latches 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enqueue hash chain latches
_enqueue_locks 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 locks for managed enqueues
_explain_rewrite_mode 901, 920 allow additional messages to be generated during explain rewrite
_fairness_pi 901 if TRUE, allow spontaneous PI buffers
_fairness_threshold 815, 816, 817, 901, 920 number of times to CR serve before downgrading lock (DFS)
_fast_full_scan_enabled 803, 804, 805, 806, 815, 816, 817, 901, 920 enable/disable index fast full scan
_fifth_spare_parameter 815, 816, 817, 901, 920 fifth spare parameter - string
_filesystemio_options 817, 901 IO operations on filesystem files
_first_spare_parameter 815, 816, 817, 901, 920 first spare parameter - integer
_foreground_locks 815  
_force_datefold_trunc 920 force use of trunc for datefolding rewrite
_force_temptables_for_gsets 901, 920 executes concatenation of rollups using temp tables
_fourth_spare_parameter 815, 816, 817, 901, 920 fourth spare parameter - string
_freeze_DB_for_fast_instance_recovery 815, 816, 817  
_full_pwise_join_enabled 815, 816, 817, 901, 920 enable full partition-wise join when TRUE
_gc_bsp_procs 816, 817, 901 number of buffer server processes to start (DFS)
_gc_class_locks 803, 804, 805, 806, 815, 816, 817  
_gby_onekey_enabled 920 enable use of one comparison of all group by keys
_gc_defer_time 901, 920 how long to defer down converts for hot buffers (DFS)
_gc_integrity_checks 920 if TRUE, enable expensive integrity checks (DFS)
_gc_latches 815, 816, 817, 901, 920 number of latches per lock process (DFS)number of latches per LMS process (DFS)
_gc_lck_procs 815, 816, 817, 901 number of background parallel server lock processes to start
_gc_recovery_scan_smon 723, 732, 733, 734  
_gc_releasable_locks 901 number of global cache locks (DFS)
_gcs_fast_reconfig 920 if TRUE, enable fast reconfiguration for gcs locks
_gcs_latches 920 number of gcs resource hash latches to be allocated
_gcs_resources 920 number of gcs resources to be allocated
_generalized_pruning_enabled 920 controls extensions to partition pruning for general predicates
_groupby_nopushdown_cut_ratio 815, 816, 817, 901, 920 groupby nopushdown cut ratio
_groupby_orderby_combine 816, 817, 901, 920 groupby/orderby don't combine threshold
_gs_anti_semi_join_allowed 901, 920 enable anti/semi join for the GS query
_hard_protection 920 if TRUE enable H.A.R.D specific format changes
_hash_multiblock_io_count 901, 920 number of blocks hash join will read/write at once
_high_server_threshold 815, 816, 817, 901, 920 high server thresholds
_huge_sga_base_address 716  
_idl_conventional_index_maintenance 803, 804, 805, 806, 815, 816, 817, 901, 920 enable conventional index maintenance for insert direct load
_ignore_desc_in_index 816, 817, 901, 920 ignore DESC in indexes, sort those columns ascending anyhow
_ignore_failed_escalates 803, 804, 805, 806  
_improved_outerjoin_card 816, 817, 901, 920 improved outer-join cardinality calculation
_improved_row_length_enabled 815, 816, 817, 901, 920 enable the improvements for computing the average row length
_imr_active 901, 920 Activate Instance Membership Recovery feature
_imr_max_reconfig_delay 901, 920 Maximum Reconfiguration delay (seconds)
_imr_splitbrain_res_wait 920 Maximum wait for split-brain resolution (seconds)
_index_join_enabled 816, 817, 901, 920 enable the use of index joins
_index_prefetch_factor 815, 816, 817, 901, 920 index prefetching factor
_init_sql_file 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 File containing SQL statements to execute upon database creation
_insert_enable_hwm_brokered 901, 920 during parallel inserts high water marks are brokered
_inst_locking_period 901, 920 period an instance can retain a newly acquired level1 bitmap
_instance_type 920 type of instance to be executed
_interconnect_checksum 816, 817, 901, 920 if TRUE, checksum interconnect blocks (DFS)
_intrapart_pdml_enabled 920 Enable intra-partition updates/deletes
_io_slaves_disabled 803, 804, 805, 806, 815, 816, 817, 901, 920 Do not use I/O slaves
_ioslave_batch_count 803, 804, 805, 806, 815, 816, 817, 901, 920 Per attempt IOs picked
_ioslave_issue_count 803, 804, 805, 806, 815, 816, 817, 901, 920 IOs issued before completion check
_ipc_fail_network 816, 817, 901, 920 Simulate cluster network failer
_ipc_test_failover 816, 817, 901, 920 Test transparent cluster network failover
_ipc_test_mult_nets 816, 817, 901, 920 simulate multiple cluster networks
_ipq_use_udp 733, 734  
_job_queue_interval 901, 920 Wakeup interval in seconds for job queue co-ordinator
_kcl_commit 920 if TRUE, call kjbcommit (DFS)
_kcl_conservative_log_flush 920 if TRUE, conservatively log flush before CR serving (DFS)
_kcl_debug 815, 816, 817, 901, 920 if TRUE, record le history (DFS)
_kcl_dispatch 901 if TRUE, dispatch requests to bsp and lck (DFS)
_kcl_index_split 920 if TRUE, reject pings on blocks in middle of a split (DFS)
_kcl_local_file_time 920 how often to check for local files (DFS)
_kcl_name_table_latches 901, 920 number of name table latches (DFS)
_kcl_partition 901 if TRUE, dynamically remaster partitioned files (DFS)
_kcl_recovery_read_batch 920 recovery read batch size (DFS)
_kcl_undo_grouping 920 grouping for undo block locks (DFS)
_kcl_undo_locks 920 number of locks per undo segment (DFS)
_kcl_use_cr 901, 920 if TRUE, use Fusion CR buffers (DFS)
_kdbl_enable_post_allocation 901, 920 allocate dbas after populating data buffers
_keep_recovery_buffers 901, 920 if TRUE, make recovery buffers currentif TRUE, make recovery buffers current (DFS)
_keep_remote_column_size 901, 920 remote column size does not get modified
_kghdsidx_count 901, 920 max kghdsidx count
_kgl_bucket_count 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 index to the bucket count array
_kgl_latch_count 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of library cache latches
_kgl_multi_instance_invalidation 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 whether KGL to support multi-instance invalidations
_kgl_multi_instance_lock 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 whether KGL to support multi-instance locks
_kgl_multi_instance_pin 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 whether KGL to support multi-instance pins
_kglsim_maxmem_percent 920 max percentage of shared pool size to be used for KGL advice
_kkfi_trace 815, 816, 817, 901, 920 trace expression substitution
_kolfuseslf 920 allow kolf to use slffopen
_ksdxw_cini_flg 920 ksdxw context initialization flag
_ksdxw_nbufs 920 ksdxw number of buffers in buffered mode
_ksdxw_num_pgw 920 number of watchpoints on a per-process basis
_ksdxw_num_sgw 920 number of watchpoints to be shared by all processes
_ksdxw_stack_depth 920 number of PCs to collect in the stack when watchpoint is hit
_ksi_trace 816, 817, 901, 920 KSI trace string of lock type(s)
_ksmg_granule_locking_status 920 granule locking status
_ksmg_granule_size 901, 920 granule size in bytes
_ksu_diag_kill_time 901, 920 number of seconds ksuitm waits before killing diag
_ktc_latches 920 number of ktc latches
_ktu_latches 920 number of KTU latches
_large_pool_min_alloc 815, 816, 817, 901, 920 minimum allocation size in bytes for the large allocation pool
_last_allocation_period 901, 920 period over which an instance can retain an active level1 bitmap
_latch_class_0 920 latch class 0
_latch_class_1 920 latch class 1
_latch_class_2 920 latch class 2
_latch_class_3 920 latch class 3
_latch_class_4 920 latch class 4
_latch_class_5 920 latch class 5
_latch_class_6 920 latch class 6
_latch_class_7 920 latch class 7
_latch_classes 920 latch classes override
_latch_miss_stat_sid 815, 816, 817, 901, 920 Sid of process for which to collect latch stats
_latch_recovery_alignment 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 align latch recovery structures
_latch_spin_count 716, 723, 732, 733, 734  
_latch_wait_posting 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_lazy_freelist_close 815, 816, 817  
_le_lru_scan 817  
_ldr_io_size 901, 920 size of write IOs used during a load operation
_left_nested_loops_random 815, 816, 817, 901, 920 enable random distribution method for left of nestedloops
_lgwr_async_io 815, 816, 817, 901, 920 LGWR Asynchronous IO enabling boolean flag
_lgwr_delay_write 920 LGWR write delay for debugging
_lgwr_io_slaves 815, 816, 817, 901, 920 LGWR I/O slaves
_lgwr_max_ns_wt 901, 920 Maximum wait time for lgwr to allow NetServer to progress
_lgwr_ns_nl_max 901, 920 Variable to simulate network latency
_lgwr_ns_nl_min 901, 920 Variable to simulate network latency
_lgwr_ns_sim_err 901, 920 Variable to simulate errors during lgwr-network server testingVariable to simulate errors lgwrns
_library_cache_advice 920 whether KGL advice should be turned on
_like_with_bind_as_equality 816, 817, 901, 920 treat LIKE predicate with bind as an equality predicate
_lm_ast_option 803, 804, 805, 806, 815, 816, 817  
_lm_activate_lms_threshold 901, 920 threshold value to activate an additional lms
_lm_cache_lvl0_cleanup 920 how often to cleanup level 0 cache res (in sec)
_lm_cache_res_cleanup 816, 817, 901, 920 percentage of cached resources should be cleanup
_lm_cache_res_type 920 cache resource: string of lock types(s)
_lm_dd_interval 816, 817, 901, 920 dd time interval in seconds
_lm_direct_sends 803, 804, 805, 806, 815, 816, 817, 901, 920 Processes which will do direct lock manager sendsProcesses which will do direct sends
_lm_dlmd_procs 803, 804, 805, 806, 815, 816, 817  
_lm_domains 803, 804, 805, 806, 815, 816, 817  
_lm_groups 803, 804, 805, 806, 815, 816, 817  
_lm_dispatch_nonpcm 901 dispatching non-pcm messages to LMS
_lm_dispatch_pcm 901 dispatching pcm messages to LMS
_lm_drm_window 920 dynamic remastering bucket window size
_lm_dynamic_lms 901, 920 dynamic lms invocation
_lm_dynamic_load 920 dynamic load adjustment
_lm_dynamic_remastering 901, 920 if TRUE enables dynamic remastering
_lm_enq_lock_freelist 920 Number of ges enqueue element freelist
_lm_enq_rcfg 920 if TRUE enables enqueue reconfiguration
_lm_enqeue_freelist 920 Number of enqueue freelist
_lm_file_affinity 920 mapping between file id and master instance number
_lm_lmd_waittime 920 default wait time for lmd
_lm_lms 901, 920 number of background lock manager server processes to startnumber of background global cache server processes to start
_lm_lms_waittime 920 default wait time for lms
_lm_locks 901, 920 number of locks configured for the lock managernumber of enqueues configured for cluster database
_lm_master_weight 901, 920 master resource weight for this instance
_lm_max_lms 901, 920 max. number of background lock manager server processesmax. number of background global cache server processes
_lm_min_lms 901, 920 min. number of background lock manager server processesmin. number of background global cache server processes
_lm_msg_batch_size 901, 920 DLM batch message sizeGES batch message size
_lm_msg_cache_thresholds 920 GES message buffer caching threshold
_lm_msg_cleanup_interval 920 GES message buffer cleanup interval time
_lm_node_join_opt 901, 920 lock manager node join optimization in reconfigcluster database node join optimization in reconfig
_lm_non_fault_tolerant 803, 804, 805, 806, 815, 816, 817, 901, 920 disable lock manager fault-tolerance modedisable cluster database fault-tolerance mode
_lm_num_pcmhv_latches 920 number of latches covering the PCM HV buckets in cgs
_lm_proc_freeze_timeout 901, 920 reconfiguration: process freeze timeout
_lm_process_batching 920 GES implicit process batching for IPC messages
_lm_procs 816, 817, 901, 920 number of client processes configured for the lock managernumber of client processes configured for cluster database
_lm_rcfg_timeout 920 Reconfiguration timeout
_lm_rcv_buffer_size 816, 817, 901, 920 the size of receive buffer
_lm_res_cache 817  
_lm_res_cache_interval 817  
_lm_res_hash_bucket 920 number of resource hash buckets
_lm_res_part 901, 920 number of resource partition configured for the lock managernumber of resource partition configured for gcs
_lm_ress 901, 920 number of resources configured for the lock managernumber of resources configured for cluster database
_lm_send_buffers 803, 804, 805, 806, 815, 816, 817, 901, 920 number of lock manager send buffersnumber of cluster database send buffers
_lm_statistics 803, 804, 805, 806, 815, 816, 817  
_lm_send_queue_batching 920 GES send queue message batching
_lm_send_queue_length 901, 920 KJCT send queue maximum lengthGES send queue maximum length
_lm_share_lock_opt 920 if TRUE enables share lock optimization
_lm_sq_batch_factor 920 GES send queue minimum batching factor
_lm_sync_timeout 816, 817, 901, 920 Synchronization timeout for DLM reconfiguration steps
_lm_ticket_active_sendback 817, 901, 920 Flow control ticket active sendback threshold
_lm_tickets 901, 920 DLM messaging ticketsGES messaging tickets
_lm_tx_delta 901, 920 TX lock localization delta
_lm_validate_resource_type 901, 920 if TRUE enables resource name validation
_lm_xids 803, 804, 805, 806, 815, 816, 817, 901, 920 number of transaction IDs configured for the lock managernumber of transaction IDs configured for cluster database
_load_without_compile 920 Load PL/SQL or Database objects without compilation
_local_communication_costing_enabled 901, 920 enable local communication costing when TRUE
_local_communication_ratio 901, 920 set the ratio between global and local communication (0..100)
_lock_sga_areas 815, 816, 817, 901, 920 Lock specified areas of the SGA in physical memory
_log_archive_buffer_size 815, 816, 817, 901, 920 Size of each archival buffer in log file blocks
_log_archive_buffers 815, 816, 817, 901, 920 Number of buffers to allocate for archiving
_log_archive_callout 920 archival callout
_log_archive_delta_sync_wait 920 iterative sleep time in centiseconds seconds when SYNC=PARALLEL
_log_archive_net_timeout 920 maximum network wait time in seconds when SYNC=PARALLEL
_log_blocks_during_backup 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 log block images when changed during backup
_log_buffers_corrupt 816, 817, 901, 920 corrupt redo buffers before write
_log_buffers_debug 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 debug redo buffers (slows things down)
_log_checkpoint_recovery_check 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 # redo blocks to verify after checkpoint
_log_committime_block_cleanout 920 Log commit-time block cleanout
_log_debug_multi_instance 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 debug redo multi instance code
_log_entry_prebuild_threshold 716, 723, 732, 733, 734, 803, 804, 805, 806  
_log_file_block_size 733, 734  
_log_io_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 automatically initiate log write if this many redo blocks in buf
_log_simultaneous_copies 815, 816, 817, 901, 920 number of simultaneous copies into redo buffer(# of copy latches
_log_space_errors 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 should we report space errors to alert log
_log_switch_timeout 901, 920 Maximum number of seconds redos in the current log could span
_low_server_threshold 815, 816, 817, 901, 920 low server thresholds
_master_direct_sends 901, 920 direct sends for messages from master (DFS)
_mav_refresh_consistent_read 920 refresh materialized views using consistent read snapshot
_mav_refresh_double_count_prevented 920 materialized view MAV refreshes avoid double counting
_mav_refresh_opt 901, 920 optimizations during refresh of materialized views
_mav_refresh_unionall_tables 901, 920 # tables for union all expansion during materialized view refres
_max_exponential_sleep 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max sleep during exponential backoff
_max_sleep_holding_latch 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max time to sleep while holding a latch
_max_transaction_branches 815, 816, 817  
_messages 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 message queue resources - dependent on # processes & # buffers
_minimal_stats_aggregation 817, 901, 920 prohibit stats aggregation at compile/partition maintenance time
_minimum_giga_scn 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Minimum SCN to start with in 2^30 units
_mts_fastpath 716, 723, 732, 733, 734  
_mts_listener_retry 716, 723, 732, 733, 734  
_mts_load_constants 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_mts_rate_log_size 815  
_mts_rate_scale 815, 816, 817  
_mts_rate_ttl 816, 817  
_multi_join_key_table_lookup 901, 920 TRUE iff multi-join-key table lookup prefetch is enabled
_mv_refresh_delta_fraction 901, 920 delta mv as fractional percentage of size of mv
_mv_refresh_eut 901, 920 refresh materialized views using EUT(partition)-based algorithm
_mv_refresh_new_setup_disabled 920 materialized view MV refresh new setup disabling
_mv_refresh_selections 817, 901, 920 create materialized views with selections and fast refresh
_mv_refresh_use_stats 901, 920 pass cardinality hints to refresh queries
_nchar_imp_cnv 901, 920 NLS allow Implicit Conversion between CHAR and NCHAR
_ncmb_readahead_enabled 815, 816, 817, 901, 920 enable multi-block readahead for an index scan
_ncmb_readahead_tracing 815, 816, 817, 901, 920 turn on multi-block readahead tracing
_nested_loop_fudge 815, 816, 817, 901, 920 nested loop fudge
_new_connect_by_enabled 816, 817  
_nested_mav_fast_oncommit_enabled 920 nested MAV refresh fast on commit allowed
_new_initial_join_orders 817, 901, 920 enable initial join orders based on new ordering heuristics
_new_sort_cost_estimate 901, 920 enables the use of new cost estimate for sort
_no_objects 803, 804, 805, 806, 815, 816, 817, 901, 920 no object features are used
_no_or_expansion 815, 816, 817, 901, 920 OR expansion during optimization disabled
_no_preempt 803, 804, 805, 806  
_no_status_for_current 815  
_ns_max_flush_wt 901, 920 Flush wait time for NetServer to flush oustanding writes
_num_longop_child_latches 920 number of child latches for long op array
_number_cached_attributes 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum number of cached attributes per instance
_object_statistics 920 enable the object level statistics collection
_offline_rollback_segments 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 offline undo segment list
_ogms_home 815, 816, 817, 901, 920 GMS home directory
_olap_aggregate_buffer_size 920 OLAP Aggregate max buffer size
_olap_aggregate_child_fragment_size 920 OLAP Aggregate child fragment size
_olap_aggregate_child_max_size 920 OLAP Aggregate child list max size
_olap_aggregate_function_cache_enabled 920 OLAP Aggregate function cache enabler
_olap_aggregate_function_merge_threshold 920 OLAP Aggregate function merge threshold
_olap_aggregate_max_thread_tuples 920 OLAP Aggregate max thread tuples creation
_olap_aggregate_min_buffer_size 920 OLAP Aggregate min buffer size
_olap_aggregate_min_thread_status 920 OLAP Aggregate minimum cardinality of dimensions for thread
_olap_aggregate_statlen_thresh 920 OLAP Aggregate status array usage threshold
_olap_aggregate_store_probability 920 OLAP Aggregate function storeback probability
_olap_aggregate_work_per_thread 920 OLAP Aggregate max work parents
_olap_aggregate_worklist_max 920 OLAP Aggregate max worklists generated at once
_olap_allocate_errorlog_format 920 OLAP Allocate Errorlog Format
_olap_allocate_errorlog_header 920 OLAP Allocate Errorlog Header format
_olap_continuous_trace_file 920 Specify TRUE to enable continuous OLAP tracing - otherwise only
_olap_dimsave_restore_cache_values 920 OLAP Dimsave restores cached dimension values
_olap_eif_export_lob_size 920 OLAP EIF Export BLOB size
_olap_parallel_update_threshold 920 OLAP parallel update threshold in pages
_olap_poutlog_echo_to_eventlog 920 OLAP POutLog copy output to event log (tracefile)
_old_connect_by_enabled 901, 920 enable/disable old connect by
_omf 920 enable/disable OMF
_oneside_colstat_for_equijoins 817, 901, 920 sanity check on default selectivity for like/range predicate
_open_files_limit 803, 804, 805, 806, 815, 816, 817, 901, 920 Limit on number of files opened by I/O subsystem
_optim_adjust_for_part_skews 920 adjust stats for skews across partitions
_optim_enhance_nnull_detection 816, 817, 901, 920 TRUE to enable index [fast] full scan more often
_optim_new_default_join_sel 901, 920 improves the way default equijoin selectivity are computed
_optim_peek_user_binds 901, 920 enable peeking of user binds
_optimizer_adjust_for_nulls 816, 817, 901, 920 adjust selectivity for null values
_optimizer_choose_permutation 816, 817, 901, 920 force the optimizer to use the specified permutation
_optimizer_cost_model 901, 920 optimizer cost model
_optimizer_degree 816, 817, 901, 920 force the optimizer to use the same degree of parallelism
_optimizer_dyn_smp_blks 920 number of blocks for optimizer dynamic sampling
_optimizer_mode_force 816, 817, 901, 920 force setting of optimizer mode for user recursive SQL also
_optimizer_new_mbio 901 enables the use of new costing I/O with mbio
_optimizer_new_join_card_computation 920 compute join cardinality using non-rounded input values
_optimizer_percent_parallel 901, 920 optimizer percent parallel
_optimizer_search_limit 816, 817, 901, 920 optimizer search limit
_optimizer_system_stats_usage 920 system statistics usage
_optimizer_undo_changes 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 undo changes to query optimizer
_optimizer_undo_cost_change 920 optimizer undo cost change
_or_expand_nvl_predicate 816, 817, 901, 920 enable OR expanded plan for NVL/DECODE predicate
_oracle_trace_events 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE event flags
_oracle_trace_facility_version 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE facility version
_ordered_nested_loop 815, 816, 817, 901, 920 enable ordered nested loop costing
_ordered_semijoin 816, 817, 901, 920 enable ordered semi-join subquery
_parallel_adaptive_max_users 815, 816, 817, 901, 920 maximum number of users running with default DOP
_parallel_allocation 716, 723, 732, 733, 734  
_parallel_broadcast_enabled 920 enable broadcasting of small inputs to hash and sort merge joins
_parallel_default_max_instances 815, 816, 817, 901, 920 default maximum number of instances for parallel query
_parallel_execution_message_align 815, 816, 817, 901, 920 Alignment of PX buffers to OS page boundary
_parallel_fake_class_pct 815, 816, 817, 901, 920 fake db-scheduler percent used for testing
_parallel_load_bal_unit 815, 816, 817, 901, 920 number of threads to allocate per instance
_parallel_load_balancing 815, 816, 817, 901, 920 parallel execution load balanced slave allocation
_parallel_min_message_pool 732, 733, 734, 815, 816, 817, 901, 920 minimum size of shared pool memory to reserve for pq servers
_parallel_recovery_stopat 815, 816, 817, 901, 920 stop at -position- to step through SMON
_parallel_server_idle_time 815, 816, 817, 901, 920 idle time before parallel query server dies
_parallel_server_sleep_time 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 sleep time between dequeue timeouts (in 1/100ths)
_parallel_txn_global 816, 817, 901, 920 enable parallel_txn hint with updates and deletes
_parallelism_cost_fudge_factor 815, 816, 817, 901, 920 set the parallelism cost fudge factor
_partial_pwise_join_enabled 815, 816, 817, 901, 920 enable partial partition-wise join when TRUE
_passwordfile_enqueue_timeout 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 password file enqueue timeout in seconds
_pcm_fast_reconfig 901 if TRUE, enable fast reconfiguration for pcm locks
_pcm_latches 901 number of pcm resource hash latches to be allocated
_pcm_resources 901 number of pcm resources to be allocated
_pcm_shadow_locks 901, 920 number of pcm shadow locks to be allocated
_pct_refresh_double_count_prevented 920 materialized view PCT refreshes avoid double counting
_pdml_gim_sampling 815, 816, 817, 901, 920 control separation of global index maintenance for PDML
_pdml_gim_staggered 816, 817, 901, 920 slaves start on different index when doing index maint
_pdml_slaves_diff_part 815, 816, 817, 901, 920 slaves start on different partition when doing index maint
_pga_max_size 901, 920 Maximum size of the PGA memory for one process
_ping_level 901, 920 fusion ping level (DFS)
_plsql_dump_buffer_events 815, 816, 817, 901, 920 conditions upon which the PL/SQL circular buffer is dumped
_plsql_load_without_compile 816, 817, 901 PL/SQL load without compilation flag
_pmon_load_constants 901, 920 server load balancing constants (S,P,D,I,L,C,M)
_pre_rewrite_push_pred 920 push predicates into views before rewrite
_precompute_gid_values 920 precompute gid values and copy them before returning a row
_pred_move_around 901, 920 enables predicate move-around
_predicate_elimination_enabled 803, 804, 805, 806, 815, 816, 817, 901, 920 allow predicate elimination if set to TRUE
_project_view_columns 815, 816, 817, 901, 920 enable projecting out unreferenced columns of a view
_push_join_predicate 815, 816, 817, 901, 920 enable pushing join predicate inside a view
_push_join_union_view 816, 817, 901, 920 enable pushing join predicate inside a union view
_px_async_getgranule 817, 901, 920 asynchronous get granule in the slave
_px_broadcast_fudge_factor 815, 816, 817, 901, 920 set the tq broadcasting fudge factor percentage
_px_broadcast_trace 815  
_px_disable_broadcast 803, 804, 805, 806  
_px_dynamic_opt 920 turn off/on restartable qerpx dynamic optimization
_px_dynamic_sample_size 920 num of samples for restartable qerpx dynamic optimization
_px_granule_size 815, 816, 817, 901, 920 default size of a rowid range granule (in KB)
_px_index_sampling 815, 816, 817, 901, 920 parallel query sampling for index create (100000 = 100%)
_px_kxib_tracing 815, 816, 817, 901, 920 turn on kxib tracing
_px_load_publish_interval 815, 816, 817, 901, 920 interval at which LMON will check whether to publish PX load
_px_max_granules_per_slave 815, 816, 817, 901, 920 maximum number of rowid range granules to generate per slave
_px_min_granules_per_slave 815, 816, 817, 901, 920 minimum number of rowid range granules to generate per slave
_px_no_stealing 815, 816, 817, 901, 920 prevent parallel granule stealing in shared nothing environment
_px_trace 901, 920 px trace parameter
_query_cost_rewrite 815, 816, 817, 901, 920 perform the cost based rewrite with materialized views
_query_rewrite_1 901, 920 perform query rewrite before&after or only before view merging
_query_rewrite_2 815, 816, 817, 901, 920 perform query rewrite before&after or only after view merging
_query_rewrite_drj 920 mv rewrite and drop redundant joins
_query_rewrite_expression 816, 817, 901, 920 rewrite with cannonical form for expressions
_query_rewrite_fpc 920 mv rewrite fresh partition containment
_query_rewrite_fudge 816, 817, 901, 920 cost based query rewrite with MVs fudge factor
_query_rewrite_jgmigrate 920 mv rewrite with jg migration
_query_rewrite_maxdisjunct 920 query rewrite max disjuncts
_query_rewrite_or_error 901, 920 allow query rewrite, if referenced tables are not dataless
_query_rewrite_vop_cleanup 816, 817, 901, 920 prune frocol chain before rewrite after view-merging
_realfree_heap_free_threshold 901, 920 threshold for performing real-free, in Kbytes
_realfree_heap_max_size 901, 920 minimum max total heap size, in Kbytes
_realfree_heap_mode 920 mode flags for real-free heap
_recovery_asserts 920 if TRUE, enable expensive recovery sanity checks (DFS)
_recovery_claim_batch_size 901, 920 number of messages to batch in a recovery claim message (DFS)
_recovery_percentage 901, 920 recovery buffer cache percentage
_release_insert_threshold 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum number of unusable blocks to unlink from freelist
_reliable_block_sends 901, 920 if TRUE, block sends across interconnect are reliable
_reuse_index_loop 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of blocks being examine for index block reuse
_rollback_segment_count 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of undo segments
_rollback_segment_initial 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 starting undo segment number
_row_cache_buffer_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901 size of row cache circular buffer
_row_cache_cursors 815, 816, 817, 901, 920 number of cached cursors for row cache management
_row_cache_instance_locks 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901 number of row cache instance locks
_save_escalates 803, 804, 805, 806, 815  
_row_cr 920 enable row cr for all sql
_rowsource_execution_statistics 920 if TRUE, Oracle will collect rowsource level statistics
_scn_scheme 815, 816, 817, 901, 920 SCN scheme
_second_spare_parameter 815, 816, 817, 901, 920 second spare parameter - integer
_send_ast_to_foreground 920 if TRUE, send ast message to foreground
_send_close_with_block 901, 920 if TRUE, send close with block even with direct sends
_send_requests_to_PI 920 if TRUE, try to send CR requests to PI buffers (DFS)
_serial_direct_read 815, 816, 817, 901, 920 enable direct read in serial
_session_idle_bit_latches 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 one latch per session or a latch per group of sessions
_seventh_spare_parameter 901, 920 seventh spare parameter - string list
_shared_pool_reserved_min_alloc 815, 816, 817, 901, 920 minimum allocation size in bytes for reserved area of shared poo
_shared_session_sort_fetch_buffer 723, 732, 733, 734, 803, 804, 805, 806  
_shared_pool_reserved_pct 901, 920 percentage memory of the shared pool allocated for the reserved
_shrunk_aggs_disable_threshold 901, 920 percentage of exceptions at which to switch to full length aggs
_shrunk_aggs_enabled 901, 920 enable use of variable sized buffers for non-distinct aggregates
_side_channel_batch_size 901, 920 number of messages to batch in a side channel message (DFS)
_side_channel_batch_timeout 920 timeout before shipping out all the batched side channel message
_single_process 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 run without detached processes
_sixth_spare_parameter 901, 920 sixth spare parameter - string list
_skip_assume_msg 901, 920 if TRUE, skip assume message for consigns at the master
_slave_mapping_enabled 901, 920 enable slave mapping when TRUE
_slave_mapping_group_size 901, 920 force the number of slave group in a slave mapper
_small_table_threshold 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 threshold level of table size for direct reads
_smm_advice_enabled 920 if TRUE, enable v$pga_advice
_smm_advice_log_size 920 overwrites default size of the PGA advice workarea history log
_smm_auto_cost_enabled 901, 920 if TRUE, use the AUTO size policy cost functions
_smm_auto_max_io_size 901, 920 Maximum IO size (in KB) used by sort/hash-join in auto mode
_smm_auto_min_io_size 901, 920 Minimum IO size (in KB) used by sort/hash-join in auto mode
_smm_bound 901, 920 overwrites memory manager automatically computed bound
_smm_control 901, 920 provides controls on the memory manager
_smm_max_size 901, 920 maximum work area size in auto mode (serial)
_smm_min_size 901, 920 minimum work area size in auto mode
_smm_px_max_size 901, 920 maximum work area size in auto mode (global)
_smm_trace 901, 920 Turn on/off tracing for SQL memory manager
_smon_consume_post 920 consume any extra posts after completion of transaction recovery
_smon_internal_errlimit 901, 920 limit of SMON internal errors
_smu_debug_mode 901, 920 - set debug event for testing SMU operations
_smu_error_simulation_site 901, 920 site ID of error simulation in KTU code
_smu_error_simulation_type 901, 920 error type for error simulation in KTU code
_sort_elimination_cost_ratio 816, 817, 901, 920 cost ratio for sort eimination under first_rows mode
_sort_multiblock_read_count 901, 920 multi-block read count for sort
_sort_space_for_write_buffers 815, 816, 817, 901, 920 tenths of sort_area_size devoted to direct write buffers
_sort_use_os_files_as_temporaries 716, 723, 732  
_sortmerge_inequality_join_off 817, 901, 920 turns off sort-merge join on inequality
_spin_count 815, 816, 817, 901, 920 Amount to spin waiting for a latch
_spin_cpu_yield_freq 803, 804, 805, 806  
_sql_connect_capability_code 716  
_sql_connect_capability_override 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 SQL Connect Capability Table Override
_sql_connect_capability_table 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 SQL Connect Capability Table (testing only)
_sqlexec_progression_cost 816, 817, 901, 920 sql execution progression monitoring cost threshold
_standby_lock_name_space 732, 733, 734  
_star_transformation_enabled 733, 734  
_subquery_pruning_cost_factor 816, 817, 901, 920 subquery pruning cost factor
_subquery_pruning_enabled 816, 817, 901, 920 enable the use of subquery predicates to perform pruning
_subquery_pruning_mv_enabled 920 enable the use of subquery predicates with MVs to perform prunin
_subquery_pruning_reduction 816, 817, 901, 920 subquery pruning reduction factor
_switch_on_stuck_recovery 716, 723  
_system_index_caching 901, 920 optimizer percent system index caching
_system_trig_enabled 815, 816, 817, 901, 920 are system triggers enabled
_table_lookup_prefetch_size 901, 920 table lookup prefetch vector size
_table_lookup_prefetch_thresh 920 table lookup prefetch threshold
_table_scan_cost_plus_one 816, 817, 901, 920 bump estimated full table scan cost by onebump estimated full table scan and index ffs cost by one
_temp_tran_block_threshold 816, 817, 901, 920 number of blocks for a dimension before we temp transform
_temp_tran_cache 816, 817, 901, 920 determines if temp table is created with cache option
_test_ksusigskip 920 test the function ksusigskip
_test_param_1 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 test parmeter 1 - integer
_test_param_2 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 test parameter 2 - string
_test_param_3 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 test parameter 3 - string
_test_param_4 901, 920 test parameter 4 - string list
_test_param_5 901, 920 test parmeter 5 - deprecated integer
_test_param_6 901, 920 test parmeter 6 - size (ub8)
_third_spare_parameter 815, 816, 817, 901, 920 third spare parameter - integer
_tq_dump_period 815, 816, 817, 901, 920 time period for duping of TQ statistics (s)
_trace_archive_dest 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_archive_start 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_block_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_archive 901, 920 start DIAG process
_trace_buffer_flushes 815, 816, 817, 901, 920 trace buffer flushes if otrace cacheIO event is set
_trace_buffer_gets 817, 901, 920 trace kcb buffer gets if otrace cacheIO event is set
_trace_buffers_per_process 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_buffers 901, 920 trace buffer sizes per process. Indicates the number of trace records for a process. Default is 256. Can specifcy different values per process (=:;)trace buffer sizes per process
_trace_cr_buffer_creates 815, 816, 817, 901, 920 trace cr buffer creates if otrace cacheIO event is set
_trace_enabled 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_events 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 trace events enabled at startup.trace events enabled at startup
_trace_file_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum size of trace file (in number of trace records). 64K defaultmaximum size of trace file (in number of trace records)
_trace_files_public 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Create publicly accessible trace files
_trace_flushing 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_flush_processes 901, 920 trace data archived by DIAG for these processes. Can turn the tracing on per process.trace data archived by DIAG for these processes
_trace_instance_termination 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 trace instance termination actions
_trace_multi_block_reads 815, 816, 817, 901, 920 trace multi_block reads if otrace cacheIO event is set
_trace_write_batch_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
_trace_options 901, 920 trace data flush options [binary|text],[multiple|single]trace data flush options
_trace_pin_time 920 trace how long a current pin is held
_trace_processes 901, 920 enable KST tracing in process. Default is ALLenable KST tracing in process
_transaction_recovery_servers 815, 816, 817, 901, 920 max number of parallel recovery slaves that may be used
_tts_allow_nchar_mismatch 816, 817, 901, 920 allow plugging in a tablespace with a different national charact
_two_pass 901, 920 enable two-pass thread recovery
_two_pass_reverse_polish_enabled 920 uses two-pass reverse polish alg. to generate canonical forms
_union_rewrite_for_gs 920 expand queries with GSets into UNIONs for rewrite
_unnest_notexists_sq 920 unnest NOT EXISTS subquery with one or more tables if possible
_unnest_subquery 816, 817, 901, 920 enables unnesting of correlated subqueries
_upconvert_from_ast 803, 804, 805, 806  
_use_column_stats_for_function 816, 817, 901, 920 enable the use of column statistics for DDP functions
_use_ism 815, 816, 817, 901, 920 Enable Shared Page Tables - ISM
_use_new_explain_plan 901, 920 if TRUE, use the AUTO size policy cost functions
_use_nosegment_indexes 816, 817, 901, 920 use nosegment indexes in explain plan
_use_realfree_heap 901, 920 use real-free based allocator for PGA memory
_use_seq_process_cache 920 whether to use process local seq cache
_use_vector_post 803, 804, 805, 806, 815, 816, 817, 901, 920 use vector post
_verify_undo_quota 901, 920 TRUE - verify consistency of undo quota statistics
_wait_for_sync 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 wait for sync on commit MUST BE ALWAYS TRUE
_walk_insert_threshold 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum number of unusable blocks to walk across freelist
_watchpoint_on 920 is the watchpointing feature turned on?
_write_clones 815, 816, 817, 901, 920 write clones flag
_yield_check_interval 815, 816, 817, 901, 920 interval to check whether actses should yield
active_instance_count 816, 817, 901, 920 number of active instances in the parallel servernumber of active instances in the cluster database
allow_partial_sn_results 803, 804, 805, 806  
always_anti_join 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
always_semi_join 815, 816, 817  
aq_tm_processes 803, 804, 805, 806, 815, 816, 817, 901, 920 number of AQ Time Managers to start
arch_io_slaves 803, 804, 805, 806  
async_read    
async_write 716, 723, 732, 733, 734  
archive_lag_target 901, 920 Maximum number of seconds of redos the standby could lose
audit_file_dest 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Directory in which auditing files are to reside
audit_sys_operations 920 enable sys auditing
audit_trail 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enable system auditing
auto_mounting    
b_tree_bitmap_plans 732, 733, 734, 803, 804, 805, 806  
background_core_dump 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Core Size for Background Processes
background_dump_dest 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Detached process dump directory
backup_disk_io_slaves 803, 804, 805, 806  
backup_tape_io_slaves 803, 804, 805, 806, 815, 816, 817, 901, 920 BACKUP Tape I/O slaves
bitmap_merge_area_size 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum memory allow for BITMAP MERGE
blank_trimming 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 blank trimming semantics parameter
buffer_pool_keep 803, 804, 805, 806, 815, 816, 817, 901, 920 Number of database blocks/latches in keep buffer pool
buffer_pool_recycle 803, 804, 805, 806, 815, 816, 817, 901, 920 Number of database blocks/latches in recycle buffer pool
cache_size_threshold 716, 723, 732, 733, 734, 803, 804, 805, 806  
calls_to_get_snapshot_scn_kcmgss    
ccf_io_size 716, 723, 732, 733, 734  
checkpoint_process 716, 723, 732, 733, 734  
cleanup_rollback_entries 716, 723, 732, 733, 734, 803, 804, 805, 806  
cleanouts_and_rollbacks_consistent_read_gets    
close_cached_open_cursors 716, 723, 732, 733, 734, 803, 804, 805, 806  
circuits 901, 920 max number of circuits
cluster_database 920 if TRUE startup in cluster database mode
cluster_database_instances 920 number of instances to use for sizing cluster db SGA structures
cluster_interconnects 901, 920 interconnects for RAC use
commit_point_strength 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Bias this node has toward not preparing in a two-phase commit
compatible 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Database will be completely compatible with this software versio
compatible_no_recovery 716, 723, 732, 733, 734, 803, 804, 805, 806  
control_file_record_keep_time 803, 804, 805, 806, 815, 816, 817, 901, 920 control file record keep time in days
control_files 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 control file names list
core_dump_dest 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Core dump directory
cpu_count 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 initial number of cpu's for this instance
create_bitmap_area_size 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 size of create bitmap buffer for bitmap index
cursor_sharing 816, 817, 901, 920 cursor sharing mode
cursor_space_for_time 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 use more memory in order to get faster execution
db_16k_cache_size 901, 920 Size of cache for 16K buffers
db_2k_cache_size 901, 920 Size of cache for 2K buffers
db_32k_cache_size 901, 920 Size of cache for 32K buffers
db_4k_cache_size 901, 920 Size of cache for 4K buffers
db_8k_cache_size 901, 920 Size of cache for 8K buffers
db_block_buffers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Number of database blocks cached in memory
db_block_checking 815, 816, 817, 901, 920 data and index block checking
db_block_checkpoint_batch 716, 723, 732, 733, 734, 803, 804, 805, 806  
db_block_checksum 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 store checksum in db blocks and check during reads
db_block_lru_extended_statistics 716, 723, 732, 733, 734, 803, 804, 805, 806  
db_block_lru_latches 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
db_block_lru_statistics 716, 723, 732, 733, 734, 803, 804, 805, 806  
db_block_max_dirty_target 803, 804, 805, 806, 815, 816, 817  
db_block_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Size of database block in bytes
db_cache_advice 901, 920 Buffer cache sizing advisory
db_cache_size 901, 920 Size of DEFAULT buffer pool for standard block size buffers
db_create_file_dest 901, 920 default database location
db_create_online_log_dest_1 901, 920 online log/controlfile destination #1
db_create_online_log_dest_2 901, 920 online log/controlfile destination #2
db_create_online_log_dest_3 901, 920 online log/controlfile destination #3
db_create_online_log_dest_4 901, 920 online log/controlfile destination #4
db_create_online_log_dest_5 901, 920 online log/controlfile destination #5
db_domain 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 directory part of global database name stored with CREATE DATABA
db_file_direct_io_count 803, 804, 805, 806, 815, 816, 817  
db_file_multiblock_read_count 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 db block to be read each IO
db_file_name_convert 803, 804, 805, 806, 815, 816, 817, 901, 920 datafile name convert patterns and strings for standby/clone db
db_file_simultaneous_writes 716, 723, 732, 733, 734, 803, 804, 805, 806  
db_file_standby_name_convert 732, 733, 734  
db_files 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max allowable # db files
db_keep_cache_size 901, 920 Size of KEEP buffer pool for standard block size buffers
db_name 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 database name specified in CREATE DATABASE
db_recycle_cache_size 901, 920 Size of RECYCLE buffer pool for standard block size buffers
db_writer_processes 815, 816, 817, 901, 920 number of background database writer processes to start
db_writers 716, 723, 732, 733, 734  
dblink_encrypt_login 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enforce password for distributed login always be encrypted
dbwr_io_slaves 803, 804, 805, 806, 815, 816, 817, 901, 920 DBWR I/O slaves
delayed_logging_block_cleanouts 732, 733, 734, 803, 804, 805, 806  
discrete_transactions_enabled 716, 723, 732, 733, 734, 803, 804, 805, 806  
dg_broker_config_file1 920 data guard broker configuration file #1
dg_broker_config_file2 920 data guard broker configuration file #2
dg_broker_start 920 start Data Guard broker framework (DMON process)
disk_asynch_io 803, 804, 805, 806, 815, 816, 817, 901, 920 Use asynch I/O for random access devices
dispatchers 920 specifications of dispatchers
distributed_lock_timeout 716, 723, 732, 733, 734, 803, 804, 805, 806, 920 number of seconds a distributed transaction waits for a lock
distributed_recovery_connection_hold_tim 716, 723, 732, 733, 734, 803, 804, 805, 806  
dispatchers 901 specifications of dispatchers
distributed_transactions 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901 max. number of concurrent distributed transactions
dml_locks 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 dml locks - one for each table modified in a transaction
drs_start 901, 920 start DR Server framework (DMON process)start DG Broker monitor (DMON process)
enqueue_resources 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 resources for enqueues
ent_domain_name 815  
event 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 debug event control - default null string
fal_client 901, 920 FAL client
fal_server 901, 920 FAL server list
fast_start_io_target 816, 817, 901, 920 Upper bound on recovery reads
fast_start_mttr_target 901, 920 MTTR target of forward crash recovery in seconds
fast_start_parallel_rollback 816, 817, 901, 920 max number of parallel recovery slaves that may be used
file_mapping 920 enable file mapping
filesystemio_options 920 IO operations on filesystem files
fixed_date 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 fixed SYSDATE value
freeze_DB_for_fast_instance_recovery 803, 804, 805, 806  
gc_db_locks 716, 723, 732, 733, 734  
gc_defer_time 803, 804, 805, 806, 815, 816, 817  
gc_files_to_locks 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 mapping between file numbers and global cache locks (DFS)
gc_freelist_groups 732, 733, 734  
gc_lck_procs 716, 723, 732, 733, 734, 803, 804, 805, 806  
gc_releasable_locks 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
gc_rollback_locks 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
gc_rollback_segments 716, 723, 732, 733, 734  
gc_save_rollback_locks 716, 723, 732, 733, 734  
gc_segments 716, 723, 732, 733, 734  
gc_tablespaces 716, 723, 732, 733, 734  
global_context_pool_size 901, 920 Global Application Context Pool Size in Bytes
global_names 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enforce that database links have same name as remote database
hash_area_size 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 size of in-memory hash work area
hash_join_enabled 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enable/disable hash join
hash_multiblock_io_count 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
hi_shared_memory_address 815, 816, 817, 901, 920 SGA starting address (high order 32-bits on 64-bit platforms)
hs_autoregister 815, 816, 817, 901, 920 enable automatic server DD updates in HS agent self-registration
ifile 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 include file in init.ora
instance_groups 803, 804, 805, 806, 815, 816, 817, 901, 920 list of instance group names
instance_name 815, 816, 817, 901, 920 instance name supported by the instance
instance_number 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 instance number
ipq_net 733, 734  
java_max_sessionspace_size 816, 817, 901, 920 max allowed size in bytes of a Java sessionspace
java_pool_size 815, 816, 817, 901, 920 size in bytes of the Java pool
java_soft_sessionspace_limit 816, 817, 901, 920 warning limit on size in bytes of a Java sessionspace
job_queue_interval 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
job_queue_keep_connections 716, 723, 732, 733, 734, 803, 804, 805, 806  
job_queue_processes 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of job queue slave processes
large_pool_min_alloc 803, 804, 805, 806  
large_pool_size 803, 804, 805, 806, 815, 816, 817, 901, 920 size in bytes of the large allocation pool
lgwr_io_slaves 803, 804, 805, 806  
license_max_sessions 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum number of non-system user sessions allowed
license_max_users 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum number of named users that can be created in the databas
license_sessions_warning 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 warning level for number of non-system user sessions
lm_locks 803, 804, 805, 806, 815, 816, 817  
lm_procs 803, 804, 805, 806, 815  
lm_ress 803, 804, 805, 806, 815, 816, 817  
local_listener 803, 804, 805, 806, 815, 816, 817, 901, 920 local listener
lock_name_space 803, 804, 805, 806, 815, 816, 817, 901, 920 lock name space used for generating lock names for standby/clone
lock_sga 815, 816, 817, 901, 920 Lock entire SGA in physical memory
log_archive_buffer_size 716, 723, 732, 733, 734, 803, 804, 805, 806  
log_archive_buffers 716, 723, 732, 733, 734, 803, 804, 805, 806  
log_archive_dest 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 archival destination text string
log_archive_dest_n 815, 816, 817  
log_archive_dest_1 815, 816, 817, 901, 920 archival destination #1 text string
log_archive_dest_10 901, 920 archival destination #10 text string
log_archive_dest_2 815, 816, 817, 901, 920 archival destination #2 text string
log_archive_dest_3 815, 816, 817, 901, 920 archival destination #3 text string
log_archive_dest_4 815, 816, 817, 901, 920 archival destination #4 text string
log_archive_dest_5 815, 816, 817, 901, 920 archival destination #5 text string
log_archive_dest_state_n 815, 816, 817  
log_archive_dest_6 901, 920 archival destination #6 text string
log_archive_dest_7 901, 920 archival destination #7 text string
log_archive_dest_8 901, 920 archival destination #8 text string
log_archive_dest_9 901, 920 archival destination #9 text string
log_archive_dest_state_1 815, 816, 817, 901, 920 archival destination #1 state text string
log_archive_dest_state_10 901, 920 archival destination #10 state text string
log_archive_dest_state_2 815, 816, 817, 901, 920 archival destination #2 state text string
log_archive_dest_state_3 815, 816, 817, 901, 920 archival destination #3 state text string
log_archive_dest_state_4 815, 816, 817, 901, 920 archival destination #4 state text string
log_archive_dest_state_5 815, 816, 817, 901, 920 archival destination #5 state text string
log_archive_dest_state_6 901, 920 archival destination #6 state text string
log_archive_dest_state_7 901, 920 archival destination #7 state text string
log_archive_dest_state_8 901, 920 archival destination #8 state text string
log_archive_dest_state_9 901, 920 archival destination #9 state text string
log_archive_duplex_dest 803, 804, 805, 806, 815, 816, 817, 901, 920 duplex archival destination text string
log_archive_format 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 archival destination format
log_archive_max_processes 815, 816, 817, 901, 920 maximum number of active ARCH processes
log_archive_min_succeed_dest 803, 804, 805, 806, 815, 816, 817, 901, 920 minimum number of archive destinations that must succeed
log_archive_start 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 start archival process on SGA initialization
log_archive_trace 816, 817, 901, 920 Establish archivelog operation tracing level
log_block_checksum 723, 732, 733, 734, 803, 804, 805, 806  
log_buffer 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 redo circular buffer size
log_checkpoint_interval 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 # redo blocks checkpoint threshold
log_checkpoint_timeout 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Maximum time interval between checkpoints in seconds
log_checkpoints_to_alert 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 log checkpoint begin/end to alert file
log_file_name_convert 803, 804, 805, 806, 815, 816, 817, 901, 920 logfile name convert patterns and strings for standby/clone db
log_file_standby_name_convert 732, 733, 734  
log_files 716, 723, 732, 733, 734, 803, 804, 805, 806  
log_simultaneous_copies 716, 723, 732, 733, 734, 803, 804, 805, 806  
log_small_entry_max_size 716, 723, 732, 733, 734, 803, 804, 805, 806  
log_parallelism 920 Number of log buffer strands
logmnr_max_persistent_sessions 901, 920 maximum number of threads to mine
max_commit_propagation_delay 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Max age of new snapshot in .01 seconds
max_dispatchers 901, 920 max number of dispatchers
max_dump_file_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Maximum size (blocks) of dump file
max_enabled_roles 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max number of roles a user can have enabled
max_rollback_segments 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max. number of rollback segments in SGA cache
max_shared_servers 901, 920 max number of shared servers
max_transaction_branches 716, 723, 732, 733, 734, 803, 804, 805, 806, 901 max. number of branches per distributed transaction
mts_circuits 816, 817, 901, 920 max number of circuits
mts_dispatchers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 specifications of dispatchers
mts_listener_address 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 address(es) of network listener
mts_max_dispatchers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max number of dispatchers
mts_max_servers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max number of shared servers
mts_multiple_listeners 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Are multiple listeners enabled?
mts_rate_log_size 803, 804, 805, 806  
mts_rate_scale 803, 804, 805, 806  
mts_servers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of shared servers to start up
mts_service 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 service supported by dispatchers
mts_sessions 816, 817, 901, 920 max number of shared server sessions
nls_calendar 815, 816, 817, 901, 920 NLS calendar system name
nls_comp 815, 816, 817, 901, 920 NLS comparison
nls_currency 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS local currency symbol
nls_date_format 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS Oracle date format
nls_date_language 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS date language name
nls_dual_currency 815, 816, 817, 901, 920 Dual currency symbol
nls_iso_currency 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS ISO currency territory name
nls_language 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS language name
nls_length_semantics 901, 920 create columns using byte or char semantics by default
nls_nchar_conv_excp 901, 920 NLS raise an exception instead of allowing implicit conversion
nls_numeric_characters 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS numeric characters
nls_sort 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS linguistic definition name
nls_territory 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 NLS territory name
nls_time_format 815, 816, 817, 901, 920 time format
nls_time_tz_format 815, 816, 817, 901, 920 time with timezone format
nls_timestamp_format 815, 816, 817, 901, 920 time stamp format
nls_timestamp_tz_format 815, 816, 817, 901, 920 timestampe with timezone format
object_cache_max_size_percent 803, 804, 805, 806, 815, 816, 817, 901, 920 percentage of maximum size over optimal of the user session's ob
object_cache_optimal_size 803, 804, 805, 806, 815, 816, 817, 901, 920 optimal size of the user session's object cache in bytes
olap_page_pool_size 920 size of the olap page pool in bytes
open_cursors 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max # cursors per session
open_links 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max # open links per session
open_links_per_instance 803, 804, 805, 806, 815, 816, 817, 901, 920 max # open links per instance
ops_admin_group 803, 804, 805, 806  
ops_interconnects 817  
optimizer_comp_weight 716  
optimizer_dynamic_sampling 920 optimizer dynamic sampling
optimizer_features_enable 815, 816, 817, 901, 920 optimizer plan compatibility parameter
optimizer_index_caching 815, 816, 817, 901, 920 optimizer percent index caching
optimizer_index_cost_adj 815, 816, 817, 901, 920 optimizer index cost adjustment
optimizer_max_permutations 815, 816, 817, 901, 920 optimizer maximum join permutations per query block
optimizer_mode 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 optimizer mode
optimizer_percent_parallel 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
optimizer_search_limit 733, 734, 803, 804, 805, 806, 815  
oracle_trace_collection_name 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE default collection name
oracle_trace_collection_path 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE collection path
oracle_trace_collection_size 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE collection file max. size
oracle_trace_enable 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle Trace enabled/disabled
oracle_trace_facility_name 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE default facility name
oracle_trace_facility_path 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Oracle TRACE facility path
os_authent_prefix 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 prefix for auto-logon accounts
os_roles 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 retrieve roles from the operating system
parallel_adaptive_multi_user 815, 816, 817, 901, 920 enable adaptive setting of degree for multiple user streams
parallel_automatic_tuning 815, 816, 817, 901, 920 enable intelligent defaults for parallel execution parameters
parallel_broadcast_enabled 815, 816, 817, 901 enable broadcasting of small inputs to hash and sort merge joins
parallel_default_max_instances 716, 723, 732, 733, 734, 803, 804, 805, 806  
parallel_default_max_scans 716, 723  
parallel_default_scansize 716, 723  
parallel_execution_message_size 815, 816, 817, 901, 920 message buffer size for parallel execution
parallel_instance_group 803, 804, 805, 806, 815, 816, 817, 901, 920 instance group to use for all parallel operations
parallel_max_servers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum parallel query servers per instance
parallel_min_message_pool 803, 804, 805, 806  
parallel_min_percent 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 minimum percent of threads required for parallel query
parallel_min_servers 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 minimum parallel query servers per instance
parallel_server 803, 804, 805, 806, 815, 816, 817, 901, 920 if TRUE startup in parallel server mode
parallel_server_idle_time 716, 723, 732, 733, 734, 803, 804, 805, 806  
parallel_server_instances 815, 816, 817, 901, 920 number of instances to use for sizing OPS SGA structures
parallel_threads_per_cpu 815, 816, 817, 901, 920 number of parallel execution threads per CPU
parallel_transaction_recovery 815  
parallel_transaction_resource_timeout 803, 804, 805, 806  
partition_view_enabled 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enable/disable partitioned views
plsql_load_without_compile 815  
pga_aggregate_target 901, 920 Target size for the aggregate PGA memory consumed by the instanc
plsql_compiler_flags 901, 920 PL/SQL compiler flags
plsql_native_c_compiler 901, 920 plsql native C compiler
plsql_native_library_dir 901, 920 plsql native library dir
plsql_native_library_subdir_count 901, 920 plsql native library number of subdirectories
plsql_native_linker 901, 920 plsql native linker
plsql_native_make_file_name 901, 920 plsql native compilation make file
plsql_native_make_utility 901, 920 plsql native compilation make utility
plsql_v2_compatibility 803, 804, 805, 806, 815, 816, 817, 901, 920 PL/SQL version 2.x compatibility flag
pre_page_sga 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 pre-page sga for process
processes 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 user processes
query_rewrite_enabled 815, 816, 817, 901, 920 allow rewrite of queries using materialized views if enabled
query_rewrite_integrity 815, 816, 817, 901, 920 perform rewrite using materialized views with desired integrity
rdbms_server_dn 815, 816, 817, 901, 920 RDBMS's Distinguished Name
read_only_open_delayed 815, 816, 817, 901, 920 if TRUE delay opening of read only files until first access
recovery_parallelism 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of server processes to use for parallel recovery
remote_archive_enable 901, 920 remote archivelog destinations enabledremote archival enable setting
remote_dependencies_mode 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 remote-procedure-call dependencies mode parameter
remote_listener 901, 920 remote listener
remote_login_passwordfile 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 password file usage parameter
remote_os_authent 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 allow non-secure remote clients to use auto-logon accounts
remote_os_roles 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 allow non-secure remote clients to use os roles
replication_dependency_tracking 803, 804, 805, 806, 815, 816, 817, 901, 920 tracking dependency for Replication parallel propagation
resource_limit 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 master switch for resource limit
resource_manager_plan 815, 816, 817, 901, 920 resource mgr top plan
rollback_segments 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 undo segment list
row_cache_cursors 716, 723, 732, 733, 734, 803, 804, 805, 806  
row_locking 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 row-locking
sequence_cache_entries 716, 723, 732, 733, 734, 803, 804, 805, 806  
sequence_cache_hash_buckets 716, 723, 732, 733, 734, 803, 804, 805, 806  
serial_reuse 803, 804, 805, 806, 815, 816, 817, 901, 920 reuse the frame segments
serializable 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 serializable
service_names 815, 816, 817, 901, 920 service names supported by the instance
session_cached_cursors 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of cursors to save in the session cursor cache
session_max_open_files 803, 804, 805, 806, 815, 816, 817, 901, 920 maximum number of open files allowed per session
sessions 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 user and system sessions
sga_max_size 901, 920 max total SGA size
shadow_core_dump 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Core Size for Shadow Processes
shared_memory_address 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 SGA starting address (low order 32-bits on 64-bit platforms)
shared_pool_reserved_min_alloc 716, 723, 732, 733, 734, 803, 804, 805, 806  
shared_pool_reserved_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 size in bytes of reserved area of shared pool
shared_pool_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 size in bytes of shared pool
single_process 716, 723  
snapshot_refresh_interval 716, 723, 732, 733, 734, 803, 804, 805, 806  
snapshot_refresh_keep_connections 716, 723, 732, 733, 734, 803, 804, 805, 806  
snapshot_refresh_processes 716, 723, 732, 733, 734, 803, 804, 805, 806  
shared_server_sessions 901, 920 max number of shared server sessions
shared_servers 901, 920 number of shared servers to start up
sort_area_retained_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 size of in-memory sort work area retained between fetch calls
sort_area_size 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 size of in-memory sort work area
sort_direct_writes 723, 732, 733, 734, 803, 804, 805, 806  
sort_mts_buffer_for_fetch_size 716  
sort_multiblock_read_count 815, 816, 817  
sort_read_fac 716, 723, 732, 733, 734, 803, 804, 805, 806  
sort_spacemap_size 716, 723, 732, 733, 734, 803, 804, 805, 806  
sort_write_buffer_size 723, 732, 733, 734, 803, 804, 805, 806  
sort_write_buffers 723, 732, 733, 734, 803, 804, 805, 806  
spin_count 716, 723, 732, 733, 734, 803, 804, 805, 806  
spread_extents 803, 804, 805, 806  
spfile 901, 920 server parameter file
sql92_security 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 require select privilege for searched update/delete
sql_trace 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 enable SQL trace
sql_version 816, 817, 901, 920 sql language version parameter for compatibility issues
standby_archive_dest 815, 816, 817, 901, 920 standby database archivelog destination text string
standby_file_management 901, 920 if auto then files are created/dropped automatically on standby
standby_preserves_names 901 File names on standby are the same as on the primary.
star_transformation_enabled 803, 804, 805, 806, 815, 816, 817, 901, 920 enable the use of star transformation
statistics_level 920 statistics level
tape_asynch_io 803, 804, 805, 806, 815, 816, 817, 901, 920 Use asynch I/O requests for tape devices
temporary_sort_file_dest 716, 723, 732  
temporary_table_locks 716, 723, 732, 733, 734, 803, 804, 805, 806  
text_enable 732, 733, 734, 803, 804, 805, 806, 815, 816, 817  
thread 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 Redo thread to mount
timed_os_statistics 803, 804, 805, 806, 815, 816, 817, 901, 920 internal os statistic gathering interval in seconds
timed_statistics 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 maintain internal timing statistics
trace_enabled 901, 920 enable KST tracing
tracefile_identifier 817, 901, 920 trace file custom identifier
transaction_auditing 803, 804, 805, 806, 815, 816, 817, 901, 920 transaction auditing records generated in the redo log
transactions 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 max. number of concurrent active transactions
transactions_per_rollback_segment 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 number of active transactions per rollback segment
unlimited_rollback_segments 733, 734  
undo_management 901, 920 instance runs in SMU mode if TRUE, else in RBU mode
undo_retention 901, 920 undo retention in seconds
undo_suppress_errors 901, 920 Suppress RBU errors in SMU mode
undo_tablespace 901, 920 use/switch undo tablespace
use_indirect_data_buffers 815, 816, 817, 901, 920 Enable indirect data buffers (very large SGA on 32-bit platforms
use_readv 716, 723, 732, 733, 734  
use_sigio 733, 734  
user_dump_dest 716, 723, 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 User process dump directory
utl_file_dir 732, 733, 734, 803, 804, 805, 806, 815, 816, 817, 901, 920 utl_file accessible directories list
v733_plans_enabled 732, 733, 734  
vlm_sga_base_address 723, 732, 733, 734, 803, 804, 805, 806  
workarea_size_policy 901, 920 policy used to size SQL working areas (MANUAL/AUTO)

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