GOLDENGATE 12.2 Undocumented parameters(隐藏参数)
goldengate 像数据库一样存在大量的隐藏参数，12.2 版本隐藏参数数量超过了200个， 但是这些参数并不是像ORACLE DATABASE一样公开了参数的描述作用，而且研究的人也不多，GOOGLE和MOS上很多参数都查不出相关信息， 后续会对我使用或了解的隐藏作更新.
WARNING! Using undocumented parameters without the consent of Oracle can make your system un-supported and you may be on your own if you experience data corruption.
_ABENDONUNSUPPORTED _ADDNATIVE _ADGAPPLYCHECKFREQ _ALIGNMENTBYTES _ALLOW3PARTNAMES _ALLOWDEFAULTSCHEMA _ALLOWDORMANTCOMPRESSEDOBJECT _ALLOWDUPSECONDARYXID _ALLOWIMURECORDS _ALLOWMISMATCHEDROLLBACKID _ALLOWMISSINGROWCOLLISIONS _ALLOWPKMISSINGROWCOLLISIONS _ALLOWTABLECOMPRESSION _ALLOWWILDCARDSCHEMAS _ALLOW_DATA_LOSS _ALLOW_WILD_CARD_SCHEMAS _ALTRESETLOGSCHANGENUMBER _ALTRESETLOGSID _APC_LCR_BUFFER_SIZE _APPLY_SAFETY_LEVEL _APR_APC_BUFFER_SIZE _APR_LCR_BATCH_SIZE _ARRAY_OPERATION _BATCHERRORMODE _BATCHESPERQUEUE _BATCHTRANSOPS _BINDCHARASBINARY _BINDCHARASCHAR _BRCLEANUP _BRDEBUG _BREXEC _BRVMF _BUFFERREAD _BUFSIZE _BYPASS_PARTITION_READONLY _BYTESPERQUEUE _CACHEALLSQL _CACHEDBCONNECTIONS _CACHE_ALL_SQL _CALCUTF8BYTELENGTH _CALC_UTF8_BYTE_LENGTH _CASESENSITIVE _CASE_SENSITIVE _CDR_CHECK_NULL _CHECKNULL _CHECKRACONSCNINCREMENT _CHECKTTY _CLIENT_TABLE_DEFN_SIZE _COMCAST _COMMIT_SERIALIZATION_PERIOD _COMPUTE_ROW_LEVEL_BITMAP_DEP _CONVERTBADNUMBER _CQUEUELCRPOSTTHRESHOLD _CSNDUPNUM _CSNFILTERING _CSN_DUP_NUM _CSN_FILTERING _DATA_LAYER _DBFILTERDDL _DEBUGMONITORAGENT _DEBUG_MONITOR_AGENT _DEFAULTJOURNAL _DFTJRN _DICTLOADLOGGINGFREQ _DICTLOGLOOPTIMEOUT _DIRECT_PATH _DISABLEFIX21427144 _DISABLENOMETAEXEC _DISABLESUPPLOGCHECK _DISABLE_FIX_21427144 _DLFAILOVERQUERYFREQ _DML_REORDER _DONTCACHEDBCONNECTIONS _DYNAMIC_STMTS _EMBEDQUOTE _EMPTYTOSPACE _ENABLESTREAMLINEDDBLOGREADER _ENABLE_HASH_SERVER _ENABLE_INMEM_APT _ENQUEUE_ERROR_LCRS _EVENTSIMPROPMISSING _EVENTSIMPROPMISSING1 _FAILOVERTARGETDESTID _FASTREADS _FETCHCHAINEDUPDATES _FIRE_CROSSEDITION_TRIGGERS _FORCEASM _FORCEFETCHLONGCOLUMN _FORCESKIPOPERATION _GETHOSTNAMES _GLOBALSQLEXEC _HANGATPROGRAMSTART _HANGONFATALERROR _HANG_AT_PROGRAM_START _HANG_ON_FATAL_ERROR _HASH_TABLE_SIZE _IDLETIMEOUT _IGNOREDISABLEDFKS _IGNOREOPENTRANSACTIONS _IGNORESCNSEQUENCE _IGNORETHREADEVENT _IGNORETSERECORDS _IGNOREUNSUPPORTEDUDTTYPES _IGNORE_CONSTRAINTS _IGNORE_TRUNCATED_DDL _IGNORE_UNSUPPORTED_UDT_TYPES _INFINITYTOZERO _INITBLOCKSIZE _INTERNALLCR _INVALIDRECSDURINGRECOVERY _IOLATENCY _KEYFIRST _KEY_BASED_QUERY _KGL_CACHE_SIZE _LCRASYNCREADAHEAD _LCRASYNCREADARRAYRECEIVE _LCRASYNCREADCACHEWARMUP _LCRASYNCREADNOCACHEWARMUP _LCRASYNCREADWAITBATCH _LCRCAPTUREPROTOCOL _LCRPINGFREQUENCY _LCR_CACHE_PURGE_PERIOD _LCR_CACHE_PURGE_RATIO _LEFQUERYDELAY _LOBCONDAPPLY _LOB_ASSEMBLY _LOB_COND_APPLY _LOGALLSUPPCOLS _LOG_ALL_SUPP_COLS _MAXCOMMITPROPAGATIONDELAY _MAXLOBCHUNKSIZE _MAXSEQUENCEDISTANCE _MAXSTATECHANGEWAITTIME _MAXTRANSOPS _MAX_HASH_ENTRIES_PER_TXN _MEMIDDECREASING _MEMORYPERCENTAGE _MIN_USER_AGENTS _NEWRESUME _NFSIOLATENCY _NOABENDONUNSUPPORTED _NOARCHIVEDLOGONLY _NOASSEMBLEPARTIALLOB _NOAUTOMATICSEQUENCEFLUSH _NOAUTORECFORMAT _NOBRCLEANUP _NOBUFFERREAD _NOCALCNLOBLENGTH _NOCHECKNULL _NOCHECKRACONLWB _NOCHECKTTY _NOCHECKVERSION _NOCMPMODCOL _NODBFILTER _NODBFILTERDDL _NODISABLEONRETRYERROR _NODISABLEORRETRYERROR _NOFASTREADS _NOFETCHCHAINEDUPDATES _NOFILE _NOFORCEASM _NOFORCEFETCHLONGCOLUMN _NOIGNOREORPHANLMN _NOIND _NOINFORMIXCASTFUNCSFORHTML _NOINFORMIXFIXPMRFC4 _NOINVALIDRECSDURINGRECOVERY _NOKEEPOLDSUPPLOG _NOLCRASYNCREADARRAYRECEIVE _NOLCRASYNCREADWAITBATCH _NOLOGBSN _NOMARKEDTRANSACTION _NOMERGEMEMBERS _NONATIVE _NONEWRESUME _NOODIRECT _NOOP _NOOPENARCHIVEIMMEDIATE _NOOPTIMIZEROWMIGRATION _NORAC _NOREADAHEAD _NOREOPENONREAD _NOREVERSEGUID _NOSKIPORASCRIPT _NOSQLCACHE _NOSQLNCLITRANSACTIONRENAMING _NOSYNCSOURCETRAILONCHKPT _NOSYSKEY _NOTS _NOUPDATELWM _NOUSEEDITION _NOUSETRIGGERMETADATA _NO_ABEND_ON_UNSUPPORTED _NO_AUTOMATIC_SEQUENCE_FLUSH _NO_AUTO_REC_FORMAT _NO_CALC_NLOB_LENGTH _NO_CHECK_NULL _NO_CMP_MOD_COL _NO_DISABLE_ON_RETRY_ERROR _NO_DISABLE_OR_RETRY_ERROR _NO_SQL_CACHE _NO_USE_TRIGGER_METADATA _ODBC_UNIX_UTF16 _OPENARCHIVEIMMEDIATE _OPSPERBATCH _OPSPERQUEUE _OVERRIDETHREADCOUNTCHECK _PARALLEL_BATCH _PARTITION_SIZE _PERSIST_APPLY_STATS _PRECISE_DEP_HASH _RAWDEVICEOFFSET _READAHEADCOUNT _RECALCULATE_MAX_INST_SCN _RECORD_LWM_INTERVAL _RELOADTHREADCACHE _REOPENONREAD _RESTRICT_ALL_REF_CONS _RESUMEAFTERBATCHERROR _RETRYCOUNT _RETRYDELAYMS _SCHEDULING_HINT_LEVEL _SESSIONPOOLTIMEOUT _SESSION_POOL_TIMEOUT _SHARED_TXN_STATE _SKIPDDL _SKIPORASCRIPT _SOURCE_REDO_COMPATIBLE _SQLPLUS _STATS_INTERVAL _STMTCACHESIZE _SYNCSOURCETRAILONCHKPT _TESTMAPPINGSPEED _TESTONLYMONITORAGENT _TEST_ONLY_MONITOR_AGENT _TRAILBUFFERSIZE _TRAILCHARSET _TRAILINBUFFERSIZE _TRAILOUTBUFFERSIZE _TXN_BUFFER_SIZE _UNSUPPORTEDLCROPTION _UNSUPPORTED_LCR_OPTION _USEALLKEYCOLUMNS _USEOID _USETRIGGERMETADATA _VALIDATEPKUPDATE _VALIDATE_PK_UPDATE _VECTOR_POST _WHOLEFILE _XML_SCHEMA_USE_TABLE_OWNER __CACHEFORCE __CACHEHIDDEN __CACHEMAXOSVM __CACHEMMAPFATAL __CACHENORMALVAL __CACHEOSGRAIN __CACHEPAGEOUTSIZE __CACHESIZEFORCE __CACHEVMF __CACHEWAITFORDEBUGGER __CMREGRESS
tip: source libggparam.so file in OGG location
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