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  • Oracle dg下掉一个从库

    1、在数据库中查找要下线的从库

    SQL> show parameter log_archive_dest

    NAME TYPE VALUE
    ------------------------------------ --------------------------------- ------------------------------
    log_archive_dest string
    log_archive_dest_1 string LOCATION=/u01/app/archive_log  valid_for=(all_logfiles,all_roles) db_unique_name=orcl1

    NAME TYPE VALUE
    ------------------------------------ --------------------------------- ------------------------------
    log_archive_dest_2 string SERVICE=standby lgwr async  valid_for=(online_logfiles,primary_role) db_unique_name=orcl2

    NAME TYPE VALUE
    ------------------------------------ --------------------------------- ------------------------------
    log_archive_dest_3 string SERVICE=standby_alhz lgwr  async valid_for=(online_logfiles,primary_role) db_unique_name=orcl3

    log_archive_dest_state_1 string enable
    log_archive_dest_state_2 string enable
    log_archive_dest_state_3 string ENABLE

    2、取消归档日志传输
    SQL> alter system set log_archive_dest_state_2 ='defer';


    SQL> show parameter log_archive_dest

    log_archive_dest_state_1 string enable
    log_archive_dest_state_2 string defer
    log_archive_dest_state_3 string ENABLE

    3、重新配置归档日志的路径
    SQL> alter system set log_archive_config ='DG_CONFIG=(orcl1,orcl3)';

    4、
    SQL> alter system reset LOG_ARCHIVE_DEST_STATE_2;

    SQL> alter system reset LOG_ARCHIVE_DEST_2;

    5、修改监听tnsnames.ora文件,并重启

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  • 原文地址:https://www.cnblogs.com/manger/p/12574713.html
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