Oracle Active Data Guard 12c New Features
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This document discusses new features in Oracle Active Data Guard 12c. It provides a history of Data Guard capabilities from version 7 through 11g. Key new features in 12c include Far Sync, which allows redo transport between databases across greater distances; Fast Sync, which improves synchronization performance between primary and standby databases; and real-time cascading, which allows a standby database to cascade redo in real-time as it is written to the standby redo log.
Oracle Active Data Guard 12c New Features
- 1. <Insert Picture Here> Oracle Active Data Guard 12c New Features Emre Baransel – Advanced Support Engineer
- 2. 2 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 8i 9i 9iR2 10g 10gR2 11g 11gR2 8i 9i 9iR2 10g 10gR2 11g 11gR2 • Feature Name: SSttaannddbbyy DDaattaabbaassee • Manuel transfer and apply of archived redo logs.
- 3. 3 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 7.3 8i 9i 9iR2 10g 10gR2 11g 11gR2 9i 9iR2 10g 10gR2 11g 11gR2 • AAuuttoommaattiicc archived log shipping and apply • Able to open read-only • Tablespace, datafile operations NOT replicated
- 4. 4 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 7.3 8i 8i 9i 9iR2 10g 10gR2 11g 11gR2 9iR2 10g 10gR2 11g 11gR2 • Renamed to Data Guard • Data Guard Broker • Zero data loss as a configuration option. • SSwwiittcchhoovveerr was introduced • Auto datafile Tablespace operations • Gap detection & resolution • Delay option • Parallel recovery
- 5. 5 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 7.3 8i 8i 9i 9i 9iR2 10g 10gR2 11g 11gR2 10g 10gR2 11g 11gR2 • LLooggiiccaall standby database • ‹‹Protection modes were ready to use: Maximum Protection Maximum Availability Maximum Performance • ‹‹Cascade standby database
- 6. 6 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 7.3 8i 8i 9i 9i 9iR2 9iR2 10g 10gR2 11g 11gR2 10gR2 11g 11gR2 • Real-Time Apply • Flashback database support
- 7. 7 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 7.3 8i 8i 9i 9i 9iR2 9iR2 10g 10g 10gR2 11g 11gR2 11g 11gR2 • Fast-start failover • Guaranteed rreessttoorree ppooiinntt
- 8. 8 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 8i 9i 9iR2 10g 10gR2 11g 11gR2 7.3 8i 9i 9iR2 10g 10gR2 11gR2 • AAccttiivvee DDaattaa GGuuaarrdd • SSnnaappsshhoott ssttaannddbbyy • Compress redo traffic • Rolling Upgrade with Transient Logical Standby • Different operating systems • Lost-write detection • Block Change Tracking on Standby Database
- 9. 9 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 7.3 7.3 8i 8i 9i 9i 9iR2 9iR2 10g 10g 10gR2 10gR2 11g 11g 11gR2 • Automatic BBlloocckk CCoorrrruuppttiioonn RReeppaaiirr
- 10. 10 Oracle Active Data Guard 12c New Features Data Guard History from version 7 until today 1122cc •FFaarr SSyynncc • FFaasstt SSyynncc • RReeaall--ttiimmee CCaassccaaddiinngg • SSYYSSDDGG • & others ( later slides )
- 11. 11 Oracle Active Data Guard 12c New Features Far Sync LLooccaattiioonn 11 LLooccaattiioonn 22
- 12. 12 Oracle Active Data Guard 12c New Features Far Sync PPrriimmaarryy FFaarr SSyynncc IInnssttaannccee SSttaannddbbyy Parameter File Standby Control File Password File Standby Redo Log listener.ora tnsnames.or a
- 13. 13 Oracle Active Data Guard 12c New Features Far Sync Instance PPrriimmaarryy FFaarr SSyynncc IInnssttaannccee SSttaannddbbyy Password File Standby Redo Log Parameter File Standby Control File listener.ora tnsnames.or a Create by modifying Primary Database init.ora (details in later slides)
- 14. 14 Oracle Active Data Guard 12c New Features Far Sync Instance PPrriimmaarryy FFaarr SSyynncc IInnssttaannccee SSttaannddbbyy Parameter File Standby Redo Log listener.ora tnsnames.or a Standby Control File Password File Copy directly from Primary Database
- 15. 15 Oracle Active Data Guard 12c New Features Far Sync Instance PPrriimmaarryy FFaarr SSyynncc IInnssttaannccee SSttaannddbbyy Parameter File Password File Standby Redo Log Standby Control File listener.ora tnsnames.or a -- On Primary Database: SQL> ALTER DATABASE CREATE FAR SYNC INSTANCE CONTROLFILE AS '/tmp/control01.ctl';
- 16. 16 Oracle Active Data Guard 12c New Features Far Sync Instance PPrriimmaarryy FFaarr SSyynncc IInnssttaannccee SSttaannddbbyy Parameter File Password File Standby Control File Standby Redo Log listener.ora tnsnames.or a -- If SRLs exist on primary, they will be created automatically on Far Sync instance when redo transport begins from the primary. -- If not, create manually with « ALTER DATABASE ADD STANDBY LOGFILE ... »
- 17. 17 Oracle Active Data Guard 12c New Features Far Sync Instance PPrriimmaarryy FFaarr SSyynncc IInnssttaannccee SSttaannddbbyy Parameter File Password File Standby Control File Standby Redo Log listener.ora tnsnames.or a -- Use « Oracle Net Manager » to configure a listener and create network service names for the primary and standby
- 18. FFFFaaaarrrr S SSyyyynnnncccc I IInnnnssssttttaaaannnncccceeee 18 Oracle Active Data Guard 12c New Features Far Sync - Initialization Parameters DDBB__UUNNIIQQUUEE__NNAAMMEE == cchhiiccaaggoo DDBB__FFIILLEE__NNAAMMEE__CCOONNVVEERRTT == ''//bboossttoonn//'',,''//cchhiiccaaggoo//'' LLOOGG__FFIILLEE__NNAAMMEE__CCOONNVVEERRTT == ''//bboossttoonn//'',,''//cchhiiccaaggoo//'' FFAALL__SSEERRVVEERR == bboossttoonn LLOOGG__AARRCCHHIIVVEE__CCOONNFFIIGG==''DDGG__CCOONNFFIIGG==((cchhiiccaaggoo,,cchhiiccaaggooFFSS,,bboossttoonn))'' DDBB__UUNNIIQQUUEE__NNAAMMEE == cchhiiccaaggooFFSS DDBB__FFIILLEE__NNAAMMEE__CCOONNVVEERRTT == ''//cchhiiccaaggoo//'',,''//cchhiiccaaggooFFSS//'',,''//bboossttoonn//'',,''//cchhiiccaaggooFFSS//'' LLOOGG__FFIILLEE__NNAAMMEE__CCOONNVVEERRTT == ''//cchhiiccaaggoo//'',,''//cchhiiccaaggooFFSS//'',,''//bboossttoonn//'',,''//cchhiiccaaggooFFSS//'' FFAALL__SSEERRVVEERR == cchhiiccaaggoo LLOOGG__AARRCCHHIIVVEE__CCOONNFFIIGG==''DDGG__CCOONNFFIIGG==((cchhiiccaaggoo,,cchhiiccaaggooFFSS,,bboossttoonn))'' DDBB__UUNNIIQQUUEE__NNAAMMEE == bboossttoonn DDBB__FFIILLEE__NNAAMMEE__CCOONNVVEERRTT == ''//cchhiiccaaggoo//'',,''//bboossttoonn//'' LLOOGG__FFIILLEE__NNAAMMEE__CCOONNVVEERRTT == ''//cchhiiccaaggoo//'',,''//bboossttoonn//'' FFAALL__SSEERRVVEERR == ''cchhiiccaaggooFFSS'',,''cchhiiccaaggoo'' LLOOGG__AARRCCHHIIVVEE__CCOONNFFIIGG==''DDGG__CCOONNFFIIGG==((cchhiiccaaggoo,,cchhiiccaaggooFFSS,,bboossttoonn))'' PPPPrrrriimimimmaaaarrrryyyy D DDaaaattttaaaabbbbaaaasssseeee SSSSttttaaaannnnddddbbbbyyyy D DDaaaattttaaaabbbbaaaasssseeee
- 19. PPPPrrrriimimimmaaaarrrryyyy D DDaaaattttaaaabbbbaaaasssseeee FFFFaaaarrrr S SSyyyynnnncccc I IInnnnssssttttaaaannnncccceeee 19 Oracle Active Data Guard 12c New Features Far Sync - Initialization Parameters LLOOGG__AARRCCHHIIVVEE__DDEESSTT__11 == ''LLOOCCAATTIIOONN==UUSSEE__DDBB__RREECCOOVVEERRYY__FFIILLEE__DDEESSTT VVAALLIIDD__FFOORR==((AALLLL__LLOOGGFFIILLEESS,,AALLLL__RROOLLEESS)) DDBB__UUNNIIQQUUEE__NNAAMMEE == cchhiiccaaggoo‘‘ LLOOGG__AARRCCHHIIVVEE__DDEESSTT__22 == ''SSEERRVVIICCEE==cchhiiccaaggooFFSS SSYYNNCC AAFFFFIIRRMM MAX_FAILURE=1 ALTERNATE=LOG_ARCHIVE_DEST_3 VVAALLIIDD__FFOORR==((OONNLLIINNEE__LLOOGGFFIILLEESS,,PPRRIIMMAARRYY__RROOLLEE)) DDBB__UUNNIIQQUUEE__NNAAMMEE==cchhiiccaaggooFFSS‘‘ LLOOGG__AARRCCHHIIVVEE__DDEESSTT__33==''SSEERRVVIICCEE==bboossttoonn AASSYYNNCC AALLTTEERRNNAATTEE==LLOOGG__AARRCCHHIIVVEE__DDEESSTT__22 VVAALLIIDD__FFOORR==((OONNLLIINNEE__LLOOGGFFIILLEESS,,PPRRIIMMAARRYY__RROOLLEE)) DDBB__UUNNIIQQUUEE__NNAAMMEE==bboossttoonn'' LLOOGG__AARRCCHHIIVVEE__DDEESSTT__11 == ''LLOOCCAATTIIOONN== UUSSEE__DDBB__RREECCOOVVEERRYY__FFIILLEE__DDEESSTT VVAALLIIDD__FFOORR==((AALLLL__LLOOGGFFIILLEESS,,AALLLL__RROOLLEESS)) DDBB__UUNNIIQQUUEE__NNAAMMEE == cchhiiccaaggooFFSS'' LLOOGG__AARRCCHHIIVVEE__DDEESSTT__22 == ''SSEERRVVIICCEE==bboossttoonn AASSYYNNCC VVAALLIIDD__FFOORR==((SSTTAANNDDBBYY__LLOOGGFFIILLEESS,,SSTTAANNDDBBYY__RROOLLEE)) DDBB__UUNNIIQQUUEE__NNAAMMEE==bboossttoonn'' LLOOGG__AARRCCHHIIVVEE__DDEESSTT__11 == ''LLOOCCAATTIIOONN== UUSSEE__DDBB__RREECCOOVVEERRYY__FFIILLEE__DDEESSTT VVAALLIIDD__FFOORR==((AALLLL__LLOOGGFFIILLEESS,,AALLLL__RROOLLEESS)) DDBB__UUNNIIQQUUEE__NNAAMMEE == bboossttoonn'' LLOOGG__AARRCCHHIIVVEE__DDEESSTT__22 == ''SSEERRVVIICCEE==cchhiiccaaggoo AASSYYNNCC VVAALLIIDD__FFOORR==((OONNLLIINNEE__LLOOGGFFIILLEESS,,PPRRIIMMAARRYY__RROOLLEE)) DDBB__UUNNIIQQUUEE__NNAAMMEE==cchhiiccaaggoo'' SSSSttttaaaannnnddddbbbbyyyy D DDaaaattttaaaabbbbaaaasssseeee
- 20. 20 Oracle Active Data Guard 12c New Features Real-Time Cascading ≤11g: On Standby 1, redo is cascaded, after the standby redo log file has been archived locally. 12c: Standby 1 can cascade redo in real-time (as it is being ≤11g: On Standby 1, redo is cascaded, after the standby redo log file has been archived locally. 12c: Standby 1 can cascade redo in real-time (as it is being written to the standby redo log file) written to the standby redo log file)
- 21. 21 Oracle Active Data Guard 12c New Features Fast Sync 1111gg SSYYNN RReeddoo LLoogg BBuuffffeerr OOnnlliinnee RReeddoo LLoogg OOnnlliinnee RReeddoo LLoogg PPPPrrrriimimimmaaaarrrryyyy D DDaaaattttaaaabbbbaaaasssseeee CC RReeddoo LLoogg BBuuffffeerr RReeddoo LLoogg BBuuffffeerr SSttaannddbbyy RReeddoo LLoogg SSttaannddbbyy RReeddoo LLoogg RReeddoo LLoogg BBuuffffeerr SSSSttttaaaannnnddddbbbbyyyy D DDaaaattttaaaabbbbaaaasssseeee 11 11 33 22 NSS LGWR RFS NSS commit commit ack
- 22. 22 Oracle Active Data Guard 12c New Features Fast Sync 1122cc SSYYNN RReeddoo LLoogg BBuuffffeerr OOnnlliinnee RReeddoo LLoogg OOnnlliinnee RReeddoo LLoogg PPPPrrrriimimimmaaaarrrryyyy D DDaaaattttaaaabbbbaaaasssseeee CC RReeddoo LLoogg BBuuffffeerr RReeddoo LLoogg BBuuffffeerr SSttaannddbbyy RReeddoo LLoogg SSttaannddbbyy RReeddoo LLoogg RReeddoo LLoogg BBuuffffeerr SSSSttttaaaannnnddddbbbbyyyy D DDaaaattttaaaabbbbaaaasssseeee 11 11 22 NSS LGWR RFS NSS commit commit ack
- 23. 23 Oracle Active Data Guard 12c New Features SYSDG User & Role ssqqllpplluuss // aass ssyyssddgg ssqqllpplluuss ssyyssddgg//oorraaccllee@@ttnnssaalliiaass aass ssyyssddgg SYSDG Privileges: STARTUP SHUTDOWN ALTER DATABASE ALTER SESSION ALTER SYSTEM CREATE RESTORE POINT CREATE SESSION DROP RESTORE POINT FLASHBACK DATABASE SELECT ANY DICTIONARY SELECT SYSDG Privileges: STARTUP SHUTDOWN ALTER DATABASE ALTER SESSION ALTER SYSTEM CREATE RESTORE POINT CREATE SESSION DROP RESTORE POINT FLASHBACK DATABASE SELECT ANY DICTIONARY SELECT fixed tables (x$) dynamic performance views (v$,gv$) APPQOSSYS.WLM_CLASSIFIER_PLAN fixed tables (x$) dynamic performance views (v$,gv$) APPQOSSYS.WLM_CLASSIFIER_PLAN DELETE DELETE APPQOSSYS.WLM_CLASSIFIER_PLAN APPQOSSYS.WLM_CLASSIFIER_PLAN EXECUTE EXECUTE SYS.DBMS_DRS SYS.DBMS_DRS
- 24. 24 Oracle Active Data Guard 12c New Features Other New Features The USING CURRENT LOGFILE clause is no longer required to start real-time apply. DML operations are allowed on gglloobbaall tteemmppoorraarryy ttaabblleess on Oracle Active Data Guard standbys. The use of sequences in an Oracle Active Data Guard environment is now supported. When you perform a switchover from an Oracle RAC primary database to a physical standby database, it is no longer necessary to shut down all but one primary database instance. Application Continuity is supported for Oracle Data Guard switchovers to physical standby databases. It is also supported for fast-start failover to physical standbys in maximum availability data protection mode.
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