dg recover process

 

 1.主库：
备份数据库：
run{
allocate channel ch0 type disk;
backup database format '/oradata/%U' setsize=2100000;
release channel ch0;
}

生成 standby db 的 controlfile
ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/oradata/stdby.ctl';

2.从库：
把上面生成的文件拷贝到从库

3.
修改standby库的pfile：control_files = (/oradata/stdby.ctl)

4.standby 启动到mount
startup nomount ;
alter database mount standby database;

5.standby rman target / nocatalog

6.
run{
allocate channel ch0 type disk;
restore database;
release channel ch0 ;
}
cp archve log to standby db
7.recover  managed  standby database ;