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  • Oracle DataGuard延迟应用归档归档日志

    1. 查看主库的参数设置:
    SQL> show parameter log_archive_dest_2
    
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    log_archive_dest_2                   string      SERVICE=STANDBY LGWR SYNC AFFI
                                                    RM VALID_FOR=(ONLINE_LOGFILES,
                                                    PRIMARY_ROLE) DB_UNIQUE_NAME=S
                                                    TANDBY
    
    
    2. 在主库设置延时5分钟:
    SQL> alter system set log_archive_dest_2='SERVICE=STANDBY LGWR SYNC AFFIRM delay=5VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY';
    
    
    3. 验证是否延时:
    
    
    主库执行:
    SQL> alter system switch logfile;
    System altered.
    
    
    SQL>  select max(sequence#) from v$archived_log;
    
    
    MAX(SEQUENCE#)
    --------------
               28
    
    
    备库:
    Wed Jun 13 19:48:53 2012
    Archived Log entry 14 added for thread 1 sequence 28 ID 0x4c9d8928 dest 1:
    ARCb: Archive log thread 1 sequence 28 available in 5 minute(s)
    Wed Jun 13 19:48:54 2012
    Media Recovery Delayed for 5 minute(s) (thread 1 sequence 28) <<<<<<<<延时生效
    Wed Jun 13 19:53:54 2012
    Media Recovery Log /u01/oracle/arch1/standby/1_28_757620395.arc<<<<<5分钟后才应用这个归档
    Media Recovery Waiting for thread 1 sequence 29 (in transit)
    

      

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  • 原文地址:https://www.cnblogs.com/omsql/p/11666900.html
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