--备份控制文件
rman target /
RMAN> startup
RMAN> configure controlfile autobackup on; --启动自动备份
RMAN> show CONTROLFILE AUTOBACKUP; --显示是否自动备份控制文件
RMAN> configure controlfile autobackup format for device type disk to ‘/backup/%F‘; --设置控制文件备份路径
RMAN> show controlfile autobackup format; --显示自动备份控制文件路径
RMAN> list backup of controlfile;--显示备份信息
----手动备份控制文件
RMAN> backup as backupset current controlfile;
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--恢复控制文件
--未开启自动归档的情况
RMAN> startup nomount
RMAN> restore controlfile from ‘=/backup/c-1415711864-20150817-00‘;
RMAN> startup mount;
RMAN> recover database;
RMAN> alter database open resetlogs;
---开启自动归档的情况
SQL> recover database;--(因为启动自动归档模式,这里报错)
ORA-00283: recovery session canceled due to errors
ORA-01610: recovery using the BACKUP CONTROLFILE option must be done
SQL> recover database using backup controlfile;
Specify log: {=suggested | filename | AUTO | CANCEL}
/oracle/u01/app/oracle/oradata/orcl/redo01.log(这里指定日志文件路径,但是这样恢复后又没有丢数,真是怪?)
SQL>alter database open resetlogs;
--备注:还可以通过重建控制文件的方式恢复
--备注:恢复控制文件后启动数据库,报下面这个错,是因为控制文件的SCN跟数据文件不一致,所以需要使用recover命令,上面两个因为一个启动归档模式,另一个没启动,所以有差别
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of alter db command at 08/17/2015 23:16:07
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: ‘/app/oracle/oradata/orcl/system01.dbf‘
原文：http://my.oschina.net/zhouxiang/blog/493724