Oracle英文版培训课件之Implement Streams：les02

DatabaseConfigurationObjectivesAftercompletingthislesson,youshouldbeabletodothefollowing:DescribetheconfigurationrequirementsforadatabaseusingOracleStreamsConfigurethedatabasetosupportOracleStreamsConfiguresupplementalloggingforsharedobjectsConfiguringDatabaseParametersYoumustconfiguredatabaseinitializationparametersthatare:CommontoeachtypeofStreamssiteSpecifictosourcesitesSpecifictopropagationsitesTIMED_STATISTICSJOB_QUEUE_

PROCESSESREMOTE_ARCHIVE_ENABLEPROCESSESOPEN_LINKSUNDO_RETENTIONSTREAMS_POOL_SIZEGLOBAL_NAMESLOG_ARCHIVE_*COMPATIBLEPropagationSourceCommonStreamsPoolintheSGAInstanceSGARedolog

bufferSharedpoolDatadictionary

cacheLibrarycacheDatabase

buffercacheJavapoolLargepoolStreamspoolConfiguringArchiveLoggingYoumustenablearchiveloggingatallsourcesites.Thereal-timedownstreamcaptureprocesscaptureschangesfromthestandbyredologwheneverpossibleandfromthearchivedstandbyredologfileswhenevernecessary.Thecaptureprocessreadsfromonlineredologswhenpossible,butreadsfromarchivedredologsifitfallsbehind.Archivedlogsmustbeavailableondiskuntiltheyarenolongerneededbyanycaptureprocess.log_archive_dest_1='LOCATION=$ORACLE_BASE/oradata/

<SID>/archive/MANDATORY'log_archive_format='<SID>_%t_%s_%r.arc'SupplementalLoggingPlacesadditionalcolumndataintoaredologwheneveranUPDATEorDELETEoperationisperformedCanbespecifiedatthedatabaselevelortablelevelforprimarykeycolumns,uniqueindexcolumns,foreignkeycolumns,orallcolumnsCanbeenabledforspecificnon-keycolumnsofaparticulartableusingsupplementalloggroupsMustbeconfiguredatthesourcesitecol1:2457col5:5RedologsUPDATEordersSETorder_status=5WHEREorder_id=2457;DatabaseSupplementalLoggingYoucanusethefollowingstatementtoenablesupplementalloggingforallprimary-keyandunique-keycolumnsinasourcedatabase:Databasewidesupplementallogging:LogsextraredoforalltablesinthedatabaseIseasiertomanageandmaintainthantable-levelsupplementalloggingDatabase-levelidentificationkeyloggingmethods:FOREIGN

KEYALLALTERDATABASEADDSUPPLEMENTALLOGDATA(PRIMARYKEY,UNIQUE)COLUMNS;TableSupplementalLoggingCanbeconfigured:Usingtable-levelidentificationkeyclausesBycreatingasupplementalloggroupandspecifyingindividualcolumnnamesALTERTABLEhr.departmentsADDSUPPLEMENTALLOGGROUPdept_cols(department_id,department_name)ALWAYS;ALTERTABLEHR.EMPLOYEESADD

SUPPLEMENTALLOGDATA(PRIMARYKEY)COLUMNS;ALTERTABLEHR.EMPLOYEESADD

SUPPLEMENTALLOGDATA(ALL)COLUMNS;DeterminingEnabledSupplementalLoggingMethodsDatabaselevel:Tablelevel:SELECTSUPPLEMENTAL_LOG_DATA_MINMIN,

SUPPLEMENTAL_LOG_DATA_PKPK,

SUPPLEMENTAL_LOG_DATA_UIUI,

SUPPLEMENTAL_LOG_DATA_FKFK,

SUPPLEMENTAL_LOG_DATA_ALL"ALL"FROMV$DATABASE;SELECTowner,table_name,log_group_typeFROMDBA_LOG_GROUPS;DatabaseConfigurationwith

EnterpriseManagerIfyouusetheStreamsSetupWizardinEnterpriseManager(EM)toconfigureyourStreamsenvironment,itprovidesthefollowingoptions:TheStreamsSetupWizardenablesyoutosetupandreplicatethewholedatabase,specificschemas,orspecifictablesbetweentwodatabases.TheStreamsTablespacesReplicationWizardenablesthereplicationandmaintenanceoftablespacesbetweendatabases.Messagingallowscreationandsettingupofqueues.DatabaseConfigurationwith

EnterpriseManagerConfiguringCommunication

BetweenDatabasesSendingdataormessagesbetweensitesrequiresnetworkconfigurationonthesourcesite.Bidirectionaldatareplicationrequiresnetworkconfigurationonbothsites.Youmustconfigurethefollowing:Networkconnectivity(forexample,TNSNAMES.ora)DatabaselinksCREATEDATABASELINKremote_global_name

CONNECTTOstrmadminIDENTIFIEDBYstreamsUSING'connect_string_for_remote_db';ConfiguringMultipleStreamsSitesIfyourStreamsconfigurationconsistsofmorethanonesite,youshoulddiagramthecomponentstobeconfiguredateachsite.Besuretoindicatehowthesecomponentsinteractwithothersites.SourcequeuesanddestinationqueuesCaptureandapplyprocessesPropagationprocessesandeventroutingConfigurationrequirementsforallStreamsprocessesateachsiteAdditionalPreparationforFilePropagationSOURCE_DBDEST_DBExternal

fileDirectoryStreamsAdditionalInformationForinformationaboutconfiguringanOracledatabasetosupportcaptureinanOracleRealApplicationClustersenvironment:OracleStreamsConceptsandAdministrationOracleStreamsReplicationAdministrator'sGuideForinformationaboutsupplementallogging:OracleDatabaseUtilitiesOracleDatabaseSQLReferenceOracleDataGuardConceptsandAdministrationSummaryInthislesson,youshouldhavelearnedhowto:DescribetheconfigurationrequirementsforadatabaseusingOracleStreamsConfigurethedatabasetosupportOracleStreamsConfiguresupplementalloggingforsharedobjectsPractice2-1Overview:

ConfiguringtheSourceDatabaseInthispractice,youconfiguretheAMERdatabasetosupportcaptureandpropagation.Configurethedatabaseparameters.Startuptheinstance:Enablearchivinginmountmode.Alterdatabaseopen.Res