如何启动DataGuard的备用数据库

如何启动DataGuard的备用数据库

在部署完active data guard后，不但可以将只读的查询交给备库执行，还可以把日常的数据库备份工作放在备库上执行，从而减轻主库的压力，充分的发挥服务器资源，下面演示下利用备库备份来还原主库数据的过程！

[oracle@wapcom2 bdump]$ sqlplus "/ as sysdba" sql*plus: release 9.2.0.6.0 - production on mon oct 30 08:17:24 2006 copyright (c) 1982, 2002, oracle corporation. all rights reserved. connected to an idle instance. sql> startup nomount; oracle instance started. total system global area 470881780 bytes fixed size 452084 bytes variable size 167772160 bytes database buffers 301989888 bytes redo buffers 667648 bytes sql> alter database mount standby database; database altered. sql> alter database recover managed standby database disconnect from session; database altered. sql> exit disconnected from oracle9i enterprise edition release 9.2.0.6.0 - production with the partitioning, olap and oracle data mining options jserver release 9.2.0.6.0 - production [oracle@wapcom2 bdump]$ lsnrctl start