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  • oracle11g ADG主备切换

    oracle11g ADG主备切换

    1、主库

    SQL> select name,open_mode,switchover_status from v$database;

    NAME OPEN_MODE SWITCHOVER_STATUS
    --------- -------------------- --------------------
    PROD1 READ WRITE TO STANDBY

    SQL> alter system switch logfile;

    System altered.

    SQL> alter system archive log current;

    System altered.

    SQL> alter database commit to switchover to physical standby with session shutdown;

    Database altered.

    SQL> shutdown abort
    ORACLE instance shut down.
    SQL> startup mount
    ORACLE instance started.

    Total System Global Area 849530880 bytes
    Fixed Size 1348244 bytes
    Variable Size 511708524 bytes
    Database Buffers 331350016 bytes
    Redo Buffers 5124096 bytes
    Database mounted.
    SQL> select switchover_status from v$database;

    SWITCHOVER_STATUS
    --------------------
    RECOVERY NEEDED

    SQL> alter database open;

    Database altered.

    SQL> select switchover_status from v$database;

    SWITCHOVER_STATUS
    --------------------
    TO PRIMARY

    2、备库

    SQL> alter database commit to switchover to primary with session shutdown;

    Database altered.

    SQL> alter database open;

    Database altered.

    SQL> select name,open_mode,switchover_status from v$database;

    NAME OPEN_MODE SWITCHOVER_STATUS
    --------- -------------------- --------------------
    PROD1 READ WRITE TO STANDBY

     

    3、新备库(原主库)启用实时日志应用

    SQL> alter database recover managed standby database using current logfile disconnect from session;

    Database altered.

    SQL> select name,open_mode,switchover_status from v$database;

    NAME OPEN_MODE SWITCHOVER_STATUS
    --------- -------------------- --------------------
    PROD1 READ ONLY WITH APPLY NOT ALLOWED

    参考链接:

    https://blog.csdn.net/kadwf123/article/details/83092607

    http://blog.chinaunix.net/uid-26313110-id-5748048.html

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  • 原文地址:https://www.cnblogs.com/orcl-2018/p/11565424.html
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