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  • ORACLE DG在线日志修改

    ORACLE DG在线日志修改

    SQL>select SEQUENCE#,first_time,next_time,APPLIED, THREAD# from v$archived_log order by  SEQUENCE#,THREAD#;

    select * from v$logfile order by GROUP# ;

    SQL> select GROUP#,BYTES/1024/1024 from v$log;

    SQL> select GROUP#,BYTES/1024/1024,STATUS from v$standby_log;

    REDO ONLINE LOG状态
    SQL>select * from v$logfile where type<>'STANDBY'; #ONLINE LOG 为三组
    GROUP# STATUS TYPE MEMBER IS_ CON_ID
    ---------- ------- ------- ------------------------------------------------------------ --- ----------
    1 ONLINE /u01/app/oracle/oradata/elon/st_redo01a.log NO 0
    1 ONLINE /u01/app/oracle/oradata/elon/st_redo01b.log NO 0
    2 ONLINE /u01/app/oracle/oradata/elon/st_redo02a.log NO 0
    2 ONLINE /u01/app/oracle/oradata/elon/st_redo02b.log NO 0
    3 ONLINE /u01/app/oracle/oradata/elon/st_redo03a.log NO 0
    3 ONLINE /u01/app/oracle/oradata/elon/st_redo03b.log NO 0

    STANDBY LOG状态
    SQL>select * from v$logfile where type='STANDBY'; #standby log 四组
    GROUP# STATUS TYPE MEMBER IS_ CON_ID
    ---------- ------- ------- ------------------------------------------------------------ --- ----------
    4 STANDBY /u01/app/oracle/oradata/elon/st_redo04a.log NO 0
    4 STANDBY /u01/app/oracle/oradata/elon/st_redo04b.log NO 0
    5 STANDBY /u01/app/oracle/oradata/elon/st_redo05a.log NO 0
    5 STANDBY /u01/app/oracle/oradata/elon/st_redo05b.log NO 0
    6 STANDBY /u01/app/oracle/oradata/elon/st_redo06a.log NO 0
    6 STANDBY /u01/app/oracle/oradata/elon/st_redo06b.log NO 0
    7 STANDBY /u01/app/oracle/oradata/elon/st_redo07a.log NO 0
    7 STANDBY /u01/app/oracle/oradata/elon/st_redo07b.log NO 0

    1.备库添加standby log
    SQL>alter database recover managed standby database cancel;#取消APPLIED
    SQL>alter database add standby logfile group 8 ('/u01/app/oracle/oradata/elon/st_redo08a.log','/u01/app/oracle/oradata/elon/st_redo08b.log') size 300M;
    SQL>alter database add standby logfile group 9 ('/u01/app/oracle/oradata/elon/st_redo09a.log','/u01/app/oracle/oradata/elon/st_redo09b.log') size 300M;
    SQL>alter database add standby logfile group 10 ('/u01/app/oracle/oradata/elon/st_redo10a.log','/u01/app/oracle/oradata/elon/st_redo10b.log') size 300M;
    SQL>alter database add standby logfile group 11 ('/u01/app/oracle/oradata/elon/st_redo11a.log','/u01/app/oracle/oradata/elon/st_redo11b.log') size 300M;

    2.删除备库旧的standby log
    SQL>alter database drop logfile group 4;
    SQL>alter database drop logfile group 5;
    SQL>alter database drop logfile group 6;
    SQL>alter database drop logfile group 7;

    如果出现以下错误,在主库上切换一下日志
    ERROR at line 1:
    ORA-00261: log 4 of thread 1 is being archived or modified
    ORA-00312: online log 4 thread 1: '/u01/app/oracle/oradata/elon/st_redo04b.log'

    3.主库添加standby log
    SQL>alter database add standby logfile group 8 ('/u01/app/oracle/oradata/elon/st_redo08a.log','/u01/app/oracle/oradata/elon/st_redo08b.log') size 300M;
    SQL>alter database add standby logfile group 9 ('/u01/app/oracle/oradata/elon/st_redo09a.log','/u01/app/oracle/oradata/elon/st_redo09b.log') size 300M;
    SQL>alter database add standby logfile group 10 ('/u01/app/oracle/oradata/elon/st_redo10a.log','/u01/app/oracle/oradata/elon/st_redo10b.log') size 300M;
    SQL>alter database add standby logfile group 11 ('/u01/app/oracle/oradata/elon/st_redo11a.log','/u01/app/oracle/oradata/elon/st_redo11b.log') size 300M;

    4.删除主库旧的standby log
    SQL>alter database drop logfile group 4;
    SQL>alter database drop logfile group 5;
    SQL>alter database drop logfile group 6;
    SQL>alter database drop logfile group 7;

    5.主库添加新的ONLINE REDO LOG
    SQL>alter database add logfile group 12 ('/u01/app/oracle/oradata/elon/st_redo12a.log','/u01/app/oracle/oradata/elon/st_redo12b.log') size 300M;
    SQL>alter database add logfile group 13 ('/u01/app/oracle/oradata/elon/st_redo13a.log','/u01/app/oracle/oradata/elon/st_redo13b.log') size 300M;
    SQL>alter database add logfile group 14 ('/u01/app/oracle/oradata/elon/st_redo14a.log','/u01/app/oracle/oradata/elon/st_redo14b.log') size 300M;

    6.主库删除旧的ONLINE REDOLOG,INACTIVE状态下进行删除,查看是不是INACTIVE,不是INACTIVE 多切几次归档
    SQL>alter system logfile switch
    SQL>alter system checkpoint
    SQL>alter database drop logfile group 1;
    SQL>alter database drop logfile group 2;
    SQL>alter database drop logfile group 3;

    7.备库添加新的ONLINE REDO LOG
    alter system set standby_file_management='MANUAL';

    alter database add logfile group 12 ('/u01/app/oracle/oradata/elon/st_redo12a.log','/u01/app/oracle/oradata/elon/st_redo12b.log') size 300M;
    alter database add logfile group 13 ('/u01/app/oracle/oradata/elon/st_redo13a.log','/u01/app/oracle/oradata/elon/st_redo13b.log') size 300M;
    alter database add logfile group 14 ('/u01/app/oracle/oradata/elon/st_redo14a.log','/u01/app/oracle/oradata/elon/st_redo14b.log') size 300M;

    8.删除备库旧的ONLINE REDO LOG
    SQL> alter database drop logfile group 1;
    alter database drop logfile group 1
    *
    ERROR at line 1:
    ORA-01624: log 1 needed for crash recovery of instance elon (thread 1)
    ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/elon/redo01.log'

    [oracle@oracle10g-dg1-213-100 ~]$ oerr ora 01624
    01624, 00000, "log %s needed for crash recovery of instance %s (thread %s)"
    // *Cause: A log cannot be dropped or cleared until the thread's checkpoint
    // has advanced out of the log.
    // *Action: If the database is not open, then open it. Crash recovery will
    // advance the checkpoint. If the database is open force a global
    // checkpoint. If the log is corrupted so that the database cannot
    // be opened, it may be necessary to do incomplete recovery until
    // cancel at this log.

    尝试clean logfile
    ALTER DATABASE CLEAR LOGFILE GROUP 1
    *
    ERROR at line 1:
    ORA-19527: physical standby redo log must be renamed
    ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/elon/redo01.log'

    [oracle@oracle10g-dg1-213-100 elon]$ oerr ora 19527
    19527, 00000, "physical standby redo log must be renamed"
    // *Cause: The CLEAR LOGFILE command was used at a physical standby
    // database. This command cannot be used at a physical standby
    // database unless the LOG_FILE_NAME_CONVERT initialization
    // parameter is set. This is required to avoid overwriting
    // the primary database's logfiles.
    // *Action Set the LOG_FILE_NAME_CONVERT initialization parameter.
    LOG_FILE_NAME_CONVERT参数未初始化

    SQL> alter system set log_file_name_convert='/u01/app/oracle/oradata/elon/','/u01/app/oracle/oradata/elon/' scope=spfile;

    System altered.

    SQL> shutdown immediate;
    ORA-01109: database not open


    Database dismounted.
    ORACLE instance shut down.
    SQL> startup nomount;
    ORACLE instance started.

    Total System Global Area 704643072 bytes
    Fixed Size 2098912 bytes
    Variable Size 184551712 bytes
    Database Buffers 511705088 bytes
    Redo Buffers 6287360 bytes
    SQL> alter database mount standby database;

    Database altered.

    SQL> ALTER DATABASE CLEAR LOGFILE GROUP 1;
    Database altered.

    SQL> ALTER DATABASE CLEAR LOGFILE GROUP 2;
    Database altered.

    SQL> ALTER DATABASE CLEAR LOGFILE GROUP 3;
    Database altered.

    SQL> alter database drop logfile group 1;
    Database altered.
    SQL> alter database drop logfile group 2;
    Database altered.
    SQL> alter database drop logfile group 3;
    Database altered.

    SQL> alter system set standby_file_management='AUTO' scope=both;
    System altered.
    SQL> alter database recover managed standby database disconnect from session;
    Database altered.

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  • 原文地址:https://www.cnblogs.com/elontian/p/9698639.html
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