(一)Active DataGuard启动顺序
(1)启动监听,先启从库再起主库

lsnrctl start

(2)启动数据库,先启动备库在启主库

--先启备库
sql>startup nomount
sql>alter database mount standby database;
sql>alter database open;
sql>alter database recover managed standby database using current logfile disconnect from session;
        
--再启主库
sql>startup

 

(二)DataGuard关闭顺序
(1)先关主库数据库:

sql>shutdown immediate

(2)再关备用库:
sql>alter database recover managed standby database cancel;  --停止同步
sql>shutdown immediate;

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