今天就跟大家聊聊有关11g RAC打开DG的redo实时应用是怎样的，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。
查看oracle主备日志应用情况：
SQL> select to_char(max(FIRST_TIME),'HH24:MI:SS, yyyy-mm-dd') first_time from v$archived_log where applied='YES';
FIRST_TIME
--------------------
20:57:52, 2018-07-22
在DG上操作：
SQL> select RECOVERY_MODE from v$archive_dest_status where rownum<5;
RECOVERY_MODE
-----------------------
MANAGED
IDLE
IDLE
IDLE
当前没有实时应用
SQL> select group#,member from v$logfile order by 1;
GROUP#
----------
MEMBER
--------------------------------------------------------------------------------
1
/oracle/oradata/standby01.log
2
/oracle/oradata/standby02.log
3
/oracle/oradata/standby03.log
有standby.log
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION
*
ERROR at line 1:
ORA-01153: an incompatible media recovery is active
需要先断开日志同步：
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
Database altered.
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
Database altered.
可以了。
SQL> select RECOVERY_MODE from v$archive_dest_status where rownum<5;
RECOVERY_MODE
-----------------------
MANAGED REAL TIME APPLY
IDLE
IDLE
IDLE
看完上述内容，你们对11g RAC打开DG的redo实时应用是怎样的有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注亿速云行业资讯频道，感谢大家的支持。
