修改备份文件的有效时间（必须用spfile启动数据库）
SQL> alter system set control_file_record_keep_time=30 scope=both;
System altered.
先启动归档
SQL> startup mount
Total System Global Area 314572800 bytes
Fixed Size 1219136 bytes
Variable Size 96470464 bytes
Database Buffers 209715200 bytes
Redo Buffers 7168000 bytes
Database mounted.
SQL> alter database archivelog;
Database altered.
[root@bw ~]# su - oracle
[oracle@bw ~]$ rman target /
Recovery Manager: Release 10.2.0.1.0 - Production on Sun Apr 24 10:14:45 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to target database: BW (DBID=3011863310)
RMAN> show all;
using target database control file instead of recovery catalog
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/10.2/db_1/dbs/snapcf_bw.f'; # default
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters are successfully stored
[oracle@bw u01]$ rman target /
RMAN> run{
2> allocate channel d1 type disk;
3> allocate channel d2 type disk;
4>backup full database format '/u01/bak/bw20110430_%u.bak' tag=bwfull01;
5> release channel d1;
6> release channel d2;
7> }
回车
开始恢复数据库文件
在/u01/oradata/bw下删除dbf文件 （没有删除控制文件）
[oracle@bw bw]$ rm -rf *dbf
恢复
[oracle@bw u01]$ rman target /
RMAN> startup nomount；
RMAN> alter database mount；
RMAN> restore database;
RMAN> recover database；
Starting recover at 23-APR-11
using channel ORA_DISK_1
starting media recovery
media recovery complete, elapsed time: 00:00:01
Finished recover at 23-APR-11（表示还原成功）
如果控制文件和数据文件都删除
[oracle@bw ~]$ cd /u01/oradata/bw/
[oracle@bw bw]$ ll
total 1005496
-rw-r----- 1 oracle oinstall 104865792 Apr 26 20:53 bw01.dbf
-rw-r----- 1 oracle oinstall 115351552 Apr 26 21:14 bwtbs01.dbf
-rw-r----- 1 oracle oinstall 17547264 Apr 26 21:14 control01.ctl（红色部分都删除）
-rw-r----- 1 oracle oinstall 17547264 Apr 26 21:14 control02.ctl
-rw-r----- 1 oracle oinstall 17547264 Apr 26 21:14 control03.ctl
-rw-r----- 1 oracle oinstall 20972032 Apr 26 21:14 redo1_1.dbf
-rw-r----- 1 oracle oinstall 20972032 Apr 26 20:36 redo2_1.dbf
-rw-r----- 1 oracle oinstall 20972032 Apr 26 20:48 redo3_1.dbf
-rw-r----- 1 oracle oinstall 314580992 Apr 26 21:14 sysaux01.dbf
-rw-r----- 1 oracle oinstall 314580992 Apr 26 21:14 system01.dbf
-rw-r----- 1 oracle oinstall 209723392 Apr 26 21:09 temp01.dbf
-rw-r----- 1 oracle oinstall 20972032 Apr 26 21:14 redo1_1.rdo
-rw-r----- 1 oracle oinstall 20972032 Apr 26 20:36 redo2_1.rdo
-rw-r----- 1 oracle oinstall 20972032 Apr 26 20:48 redo3_1.rdo
[oracle@bw ~]$rm –rf*dbf
[oracle@bw ~]$rm –rf*ctl
[oracle@bw ~]$ll
-rw-r----- 1 ora