Oracle 12c R1 DataGuard物理备库启用real-time apply
Oracle 12c R1 DataGuard物理备库启用real-time apply
Oracle 12c R1 DataGuard物理备库启用real-time apply
物理备库一直是在mount状态下,,这样的话不方便数据的同步验证
启用real-time apply就能够实现real-time query
在备库mount状态下:
SQL> select open_mode from v$database;
OPEN_MODE
------------------------------------------------------------
MOUNTED
SQL> alter database recover managed standby database cancel;
数据库已更改。
SQL> ALTER DATABASE OPEN;
数据库已更改。
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;
数据库已更改。
SQL> select open_mode from v$database;
OPEN_MODE
------------------------------------------------------------
READ ONLY WITH APPLY
在主库:
SQL> create table john(id number, name varchar2(40));
表已创建。
SQL> insert into john values(1, 'john');
已创建 1 行。
SQL> insert into john values(2, 'cai');
已创建 1 行。
SQL> commit;
提交完成。
备库查询:
SQL> select * from john;
ID NAME
---------- ------------------------------------------------------------------------------------------------------------------------
1 john
2 cai
可见是实时同步的!
推荐阅读:
使用RMAN的Duplicate功能创建物理DataGuard
Oracle基础教程之通过RMAN复制数据库
RMAN备份策略制定参考内容
RMAN备份学习笔记
Oracle数据库备份加密 RMAN加密
通过RMAN备份duplicate创建DataGuard

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