Can not restore data files from backup set

Question

I am trying to restore Server A's backup data to Server B (they are all oracle11g) using rman. The restore commands is below:
rman target /;
shutdown immediate;
startup nomount;
restore controlfile from '/usr/local/oracle/backup/20100418/ctl_xxx'
alter database mount;
catalog start with '/usr/local/oracle/backup/20100418/';
restore database;
recover database;
alter database open resetlogs;
For the first time, it works. But when i tried to restore another backup data by the same way:
rman target /;
shutdown immediate;
startup nomount;
restore controlfile from '/usr/local/oracle/backup/20100425/ctl_xxx'
alter database mount;
catalog start with '/usr/local/oracle/backup/20100425/';
restore database;
recover database;
alter database open resetlogs;
The second time, i found that rman restore the old backup data, which means that it restore the data file under '/usr/local/oracle/backup/20100418/' instead of '/usr/local/oracle/backup/20100425/'.
So I run 'list backup of database summary' to see the backup set lists in control file.
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
910 B 0 A DISK 18-APR-10 1 1 NO TAG20100418T020007
945 B 0 A DISK 25-APR-10 1 1 NO TAG20100425T020007
But when i run ‘restore database preview summary’ to see the backup set list to restore
List of Backups
===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
910 B 0 A DISK 18-APR-10 1 1 NO TAG20100418T020007
there's no backup set 945 at all. that's why i could not restore data file under '/usr/local/oracle/backup/20100425/' at the second time.
So, why two backup list is different ? how can i restore datafile under '/usr/local/oracle/backup/20100425/' ?
My backup script is below:
run{
allocate channel c1 type disk;
backup incremental level 0 as backupset format '$DIR/`date +%Y%m%d`/data_%d_c0_%T_%u' database;
sql 'alter system archive log current';
backup archivelog from time 'sysdate-14' format '$DIR/`date +%Y%m%d`/log_%d_%T_%u';
backup current controlfile format '$DIR/`date +%Y%m%d`/ctl_%d_%T_%I_%u';
release channel c1;
Thanks
Edited by: user13055376 on 2010-4-29 上午1:20

Answer 1

yeah, I am sure Tag: TAG20100425T020007 exists
RMAN> list backupset 945;
List of Backup Sets
BS Key Type LV Size Device Type Elapsed Time Completion Time
945 Incr 0 6.40G DISK 00:05:46 25-APR-10
BP Key: 945 Status: AVAILABLE Compressed: NO Tag: TAG20100425T020007
Piece Name: /usr/local/oracle/backup/20100425/data_QIANGL_c0_20100425_thlbvjt7
List of Datafiles in backup set 945
File LV Type Ckp SCN Ckp Time Name
1 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/system01.dbf
2 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/sysaux01.dbf
3 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/undotbs01.dbf
4 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/users01.dbf
5 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/dict01.dbf
6 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/support01.dbf
7 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/supportindex01.dbf
8 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/log01.dbf
9 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/logindex01.dbf
10 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/lobindex01.dbf
11 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/data01.dbf
12 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/indexes01.dbf
13 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/image001.dbf
14 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/tongbuimage001.dbf
15 0 Incr 2498880165194 25-APR-10 /usr/local/oracle/oradata/qiangl/imagebackup001.dbf
My purpose is to use the newest backupset of Server A to update Server B. So if Server A crush, Server B will be useful. Is there any other way to do that ?
retention policy :'configure retention policy to redundancy 4'
And Server A do LV0 backup every 7 day, and do LV1 backup ervery other day.
Edited by: user13055376 on 2010-4-29 上午3:45