RAC同单实例物理备库的switchover

  前面搭建好了rac同单实例数据库data guard的maa环境，为了方便切换操作，这里配置使用data guard broker进行操作！rac环境下，需要将data guard broker的配置文件存放到共享存储上！

一：修改data guard broker的配置文件参数，启动dmon进程

[oracle@rac1 ~]$ sqlplus sys/123456@rac as sysdba SQL*Plus: Release 10.2.0.5.0 - Production on Sat Jan 14 21:11:34 2012 Copyright (c) 1982, 2010, Oracle.  All Rights Reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, Real Application Clusters, OLAP, Data Mining and Real Application Testing options SQL> show parameter dg_broker_config; NAME                                 TYPE ------------------------------------ --------------------------------- VALUE ------------------------------ dg_broker_config_file1               string +DATA/rac/dgbroker/dg_config_f ile1.dat dg_broker_config_file2               string +FRA/rac/dgbroker/dg_config_fi le2.dat SQL> alter system set dg_broker_start=true; System altered. SQL> conn sys/123456@orcl as sysdba Connected. SQL> show parameter dg_broker_config; NAME                                 TYPE ------------------------------------ --------------------------------- VALUE ------------------------------ dg_broker_config_file1               string /u01/app/oracle/product/10.2.0 /db1/dbs/dg_config_file1.dat dg_broker_config_file2               string /u01/app/oracle/product/10.2.0 /db1/dbs/dg_config_file2.dat SQL> alter system set dg_broker_start=true; System altered.

二：使用srvctl命令修改rac数据库的启动选项，如果备库也是rac环境，同样需要相应的修改
[oracle@rac1 ~]$ srvctl modify database -d rac -s open -r primary -o $ORACLE_HOME
[oracle@rac1 ~]$ srvctl stop database -d rac -o immediate
[oracle@rac1 ~]$ srvctl start database -d rac

三：创建dg broker配置文件

[oracle@server49 ~]$ dgmgrl sys/123456@rac DGMGRL for Linux: Version 10.2.0.5.0 - 64bit Production Copyright (c) 2000, 2005, Oracle. All rights reserved. Welcome to DGMGRL, type "help" for information. Connected. DGMGRL> create configuration maa as primary database is rac connect identifier is rac; Configuration "maa" created with primary database "rac" DGMGRL> add database orcl as connect identifier is orcl maintained as physical; Database "orcl" added DGMGRL> show configuration; Configuration   Name:                maa   Enabled:             NO   Protection Mode:     MaxPerformance   Fast-Start Failover: DISABLED   Databases:     rac  - Primary database     orcl - Physical standby database Current status for "maa": DISABLED DGMGRL> show database verbose rac; Database   Name:            rac   Role:            PRIMARY   Enabled:         NO   Intended State:  ONLINE   Instance(s):     rac2     rac1   Properties:     InitialConnectIdentifier        = 'rac'     ObserverConnectIdentifier       = ''     LogXptMode                      = 'ASYNC'     Dependency                      = ''     DelayMins                       = '0'     Binding                         = 'OPTIONAL'     MaxFailure                      = '0'     MaxConnections                  = '1'     ReopenSecs                      = '300'     NetTimeout                      = '180'     LogShipping                     = 'ON'     PreferredApplyInstance          = ''     ApplyInstanceTimeout            = '0'     ApplyParallel                   = 'AUTO'     StandbyFileManagement           = 'auto'     ArchiveLagTarget                = '0'     LogArchiveMaxProcesses          = '5'     LogArchiveMinSucceedDest        = '1'     DbFileNameConvert               = '+DATA/rac, /u01/app/oracle/oradata/orcl'     LogFileNameConvert              = '+FLASH/rac, /u01/app/oracle/flash_recover_area/orcl, +DATA/rac, /u01/app/oracle/oradata/orcl'     FastStartFailoverTarget         = ''     StatusReport                    = '(monitor)'     InconsistentProperties          = '(monitor)'     InconsistentLogXptProps         = '(monitor)'     SendQEntries                    = '(monitor)'     LogXptStatus                    = '(monitor)'     RecvQEntries                    = '(monitor)'     HostName(*)     SidName(*)     LocalListenerAddress(*)     StandbyArchiveLocation(*)     AlternateLocation(*)     LogArchiveTrace(*)     LogArchiveFormat(*)     LatestLog(*)     TopWaitEvents(*)     (*) - Please check specific instance for the property value Current status for "rac": DISABLED

四：启用dg broker配置,执行主备切换

DGMGRL> enable configuration; Enabled. DGMGRL> show configuration; Configuration   Name:                maa   Enabled:             YES   Protection Mode:     MaxPerformance   Fast-Start Failover: DISABLED   Databases:     rac  - Primary database     orcl - Physical standby database Current status for "maa": SUCCESS DGMGRL> show database rac; Database   Name:            rac   Role:            PRIMARY   Enabled:         YES   Intended State:  ONLINE   Instance(s):     rac2     rac1 Current status for "rac": SUCCESS DGMGRL> show database orcl; Database   Name:            orcl   Role:            PHYSICAL STANDBY   Enabled:         YES   Intended State:  ONLINE   Instance(s):     orcl Current status for "orcl": SUCCESS DGMGRL> switchover to orcl; Performing switchover NOW, please wait... Operation requires shutdown of instance "rac1" on database "rac" Shutting down instance "rac1"... ORA-01109: database not open Database dismounted. ORACLE instance shut down. Operation requires shutdown of instance "orcl" on database "orcl" Shutting down instance "orcl"... ORA-01109: database not open Database dismounted. ORACLE instance shut down. Operation requires startup of instance "rac1" on database "rac" Starting instance "rac1"... ORACLE instance started. Database mounted. Operation requires startup of instance "orcl" on database "orcl" Starting instance "orcl"... ORACLE instance started. Database mounted. Switchover succeeded, new primary is "orcl"

五：验证

DGMGRL> show configuration; Configuration   Name:                maa   Enabled:             YES   Protection Mode:     MaxPerformance   Fast-Start Failover: DISABLED   Databases:     rac  - Physical standby database     orcl - Primary database Current status for "maa": SUCCESS DGMGRL> show configuration;  Configuration   Name:                maa   Enabled:             YES   Protection Mode:     MaxPerformance   Fast-Start Failover: DISABLED   Databases:     rac  - Physical standby database     orcl - Primary database Current status for "maa": SUCCESS 单实例数据库(原备库)日志信息如下： [oracle@server49 dbs]$ tail -f /u01/app/oracle/admin/orcl/bdump/alert_orcl.log Managed Standby Recovery Canceled (orcl) Sat Jan 14 22:36:17 CST 2012 Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL Sat Jan 14 22:36:17 CST 2012 ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY WAIT WITH SESSION SHUTDOWN Sat Jan 14 22:36:17 CST 2012 ALTER DATABASE SWITCHOVER TO PRIMARY (orcl) If media recovery active, switchover will wait 900 seconds SwitchOver after complete recovery through change 565100 Online log /u01/app/oracle/oradata/ORCL/onlinelog/group_1.307.772367339: Thread 1 Group 1 was previously cleared Online log /u01/app/oracle/oradata/ORCL/onlinelog/group_2.306.772367347: Thread 1 Group 2 was previously cleared Online log /u01/app/oracle/oradata/ORCL/onlinelog/group_3.305.772367577: Thread 2 Group 3 was previously cleared Online log /u01/app/oracle/oradata/ORCL/onlinelog/group_4.304.772367577: Thread 2 Group 4 was previously cleared Standby became primary SCN: 565098 Converting standby mount to primary mount. Sat Jan 14 22:36:21 CST 2012 Switchover: Complete - Database mounted as primary (orcl) Completed: ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY WAIT WITH SESSION SHUTDOWN Sat Jan 14 22:36:21 CST 2012 ARC3: STARTING ARCH PROCESSES ARC5: Archival started ARC3: STARTING ARCH PROCESSES COMPLETE Sat Jan 14 22:36:36 CST 2012 Job queue slave processes stopped Waiting for dispatcher 'D000' to shutdown All dispatchers and shared servers shutdown Sat Jan 14 22:36:38 CST 2012 alter database CLOSE NORMAL ORA-1109 signalled during: alter database CLOSE NORMAL... rac数据库(原主库)节点1日志信息如下： [oracle@rac1 ~]$ tail -f /u01/app/oracle/admin/rac/bdump/alert_rac1.log Reconfiguration complete Sat Jan 14 22:39:18 CST 2012 Using STANDBY_ARCHIVE_DEST parameter default value as +FRA/rac/standbylog Sat Jan 14 22:39:18 CST 2012 ALTER SYSTEM SET log_archive_dest_2='location="+FRA/rac/standbylog"',' valid_for= (STANDBY_LOGFILE,STANDBY_ROLE)' SCOPE=BOTH SID='rac1'; Using STANDBY_ARCHIVE_DEST parameter default value as +FRA/rac/standbylog Sat Jan 14 22:39:18 CST 2012 ALTER SYSTEM SET log_archive_dest_state_2='ENABLE' SCOPE=BOTH SID='rac1'; Sat Jan 14 22:39:18 CST 2012 ALTER SYSTEM SET standby_archive_dest='+FRA/rac/standbylog' SCOPE=BOTH SID='rac1'; Sat Jan 14 22:39:18 CST 2012 ALTER SYSTEM SET log_archive_trace=0 SCOPE=BOTH SID='rac1'; Sat Jan 14 22:39:18 CST 2012 ALTER SYSTEM SET log_archive_format='%t_%s_%r.dbf' SCOPE=SPFILE SID='rac1'; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET standby_file_management='auto' SCOPE=BOTH SID='*'; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET archive_lag_target=0 SCOPE=BOTH SID='*'; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET log_archive_max_processes=5 SCOPE=BOTH SID='*'; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET log_archive_min_succeed_dest=1 SCOPE=BOTH SID='*'; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET db_file_name_convert='+DATA/rac','/u01/app/oracle/oradata/orcl' SCOPE=SPFILE; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET log_file_name_convert='+FLASH/rac','/u01/app/oracle/flash_recover_area/orcl','+DATA/rac','/u01/app/oracle/orada ta/orcl' SCOPE=SPFILE; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET fal_server='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.49) (PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=orcl_XPT.yang.com)(SERVER=dedicated)))' SCOPE=BOTH; Sat Jan 14 22:39:19 CST 2012 ALTER SYSTEM SET fal_client='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1-vip.yang.com) (PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=rac_XPT.yang.com)(INSTANCE_NAME=rac1)(SERVER=dedicated)))' SCOPE=BOTH; Sat Jan 14 22:39:19 CST 2012 ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL Sat Jan 14 22:39:20 CST 2012 MRP0: Background Media Recovery cancelled with status 16037 Sat Jan 14 22:39:20 CST 2012 Errors in file /u01/app/oracle/admin/rac/bdump/rac1_mrp0_22837.trc: ORA-16037: user requested cancel of managed recovery operation Sat Jan 14 22:39:20 CST 2012 Managed Standby Recovery not using Real Time Apply Sat Jan 14 22:39:20 CST 2012 Recovery interrupted! Recovered data files to a consistent state at change 565576 Sat Jan 14 22:39:21 CST 2012 Errors in file /u01/app/oracle/admin/rac/bdump/rac1_mrp0_22837.trc: ORA-16037: user requested cancel of managed recovery operation Sat Jan 14 22:39:21 CST 2012 MRP0: Background Media Recovery process shutdown (rac1) Sat Jan 14 22:39:21 CST 2012 Managed Standby Recovery Canceled (rac1) Sat Jan 14 22:39:21 CST 2012 Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL Sat Jan 14 22:39:21 CST 2012 ALTER DATABASE RECOVER MANAGED STANDBY DATABASE  THROUGH ALL SWITCHOVER DISCONNECT  USING CURRENT LOGFILE Sat Jan 14 22:39:21 CST 2012 Attempt to start background Managed Standby Recovery process (rac1) MRP0 started with pid=36, OS id=23667 Sat Jan 14 22:39:21 CST 2012 MRP0: Background Managed Standby Recovery process started (rac1) Sat Jan 14 22:39:26 CST 2012 Managed Standby Recovery starting Real Time Apply Sat Jan 14 22:39:26 CST 2012  parallel recovery started with 2 processes Sat Jan 14 22:39:27 CST 2012 Waiting for all non-current ORLs to be archived... Media Recovery Waiting for thread 1 sequence 31 (in transit) Sat Jan 14 22:39:27 CST 2012 Recovery of Online Redo Log: Thread 1 Group 11 Seq 31 Reading mem 0   Mem# 0: +FRA/rac/onlinelog/group_11.303.772371907 Sat Jan 14 22:39:27 CST 2012 Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE  THROUGH ALL SWITCHOVER DISCONNECT  USING CURRENT LOGFILE Sat Jan 14 22:39:48 CST 2012 Media Recovery Waiting for thread 1 sequence 32 Sat Jan 14 22:39:48 CST 2012 Redo Shipping Client Connected as PUBLIC -- Connected User is Valid RFS[5]: Assigned to RFS process 23859 RFS[5]: Identified database type as 'physical standby' Primary database is in MAXIMUM PERFORMANCE mode Primary database is in MAXIMUM PERFORMANCE mode RFS[5]: Successfully opened standby log 11: '+FRA/rac/onlinelog/group_11.303.772371907' NSV0 started with pid=46, OS id=23866 Sat Jan 14 22:39:56 CST 2012 Recovery of Online Redo Log: Thread 1 Group 11 Seq 32 Reading mem 0   Mem# 0: +FRA/rac/onlinelog/group_11.303.772371907 Sat Jan 14 22:40:15 CST 2012 Redo Shipping Client Connected as PUBLIC -- Connected User is Valid RFS[6]: Assigned to RFS process 24003 RFS[6]: Identified database type as 'physical standby' [oracle@server49 ~]$ sqlplus sys/123456@orcl as sysdba SQL*Plus: Release 10.2.0.5.0 - Production on Sat Jan 14 22:47:14 2012 Copyright (c) 1982, 2010, Oracle.  All Rights Reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> select name,db_unique_name,open_mode,database_role,switchover_status from v$database; NAME      DB_UNIQUE_NAME       OPEN_MODE  DATABASE_ROLE    SWITCHOVER_STATUS --------- -------------------- ---------- ---------------- -------------------- RAC       orcl                 READ WRITE PRIMARY          SESSIONS ACTIVE SQL> conn sys/123456@rac as sysdba Connected. SQL> select name,db_unique_name,open_mode,database_role,switchover_status from gv$database; NAME      DB_UNIQUE_NAME       OPEN_MODE  DATABASE_ROLE    SWITCHOVER_STATUS --------- -------------------- ---------- ---------------- -------------------- RAC       rac                  MOUNTED    PHYSICAL STANDBY SESSIONS ACTIVE RAC       rac                  MOUNTED    PHYSICAL STANDBY SESSIONS ACTIVE SQL> conn /as sysdba Connected. SQL> archive log list; Database log mode              Archive Mode Automatic archival             Enabled Archive destination            USE_DB_RECOVERY_FILE_DEST Oldest online log sequence     31 Next log sequence to archive   32 Current log sequence           32 SQL> alter system switch logfile; System altered. SQL> select first_time,next_time,sequence#,thread#,applied from v$archived_log where thread#=1 and sequence# > 30; FIRST_TIM NEXT_TIME  SEQUENCE#    THREAD# APP --------- --------- ---------- ---------- --- 14-JAN-12 14-JAN-12         31          1 YES 14-JAN-12 14-JAN-12         32          1 YES

 

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