What happens if you drop a tablespace after it is backed up ?
Here's the backup :
RMAN> backup as compressed backupset database;
Starting backup at 16-JUN-13
using channel ORA_DISK_1
channel ORA_DISK_1: starting compressed full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00002 name=/home/oracle/app/oracle/oradata/orcl/sysaux01.dbf
input datafile file number=00001 name=/home/oracle/app/oracle/oradata/orcl/system01.dbf
input datafile file number=00004 name=/home/oracle/app/oracle/oradata/orcl/users01.dbf
input datafile file number=00003 name=/home/oracle/app/oracle/oradata/orcl/undotbs01.dbf
input datafile file number=00011 name=/home/oracle/app/oracle/oradata/orcl/ORCL/datafile/o1_mf_hemant_8pnowslc_.dbf
input datafile file number=00005 name=/home/oracle/app/oracle/oradata/orcl/example01.dbf
input datafile file number=00010 name=/home/oracle/app/oracle/oradata/orcl/APEX_2614203650434107.dbf
channel ORA_DISK_1: starting piece 1 at 16-JUN-13
channel ORA_DISK_1: finished piece 1 at 16-JUN-13
piece handle=/home/oracle/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_16/o1_mf_nnndf_TAG20130616T080419_8vvnzn37_.bkp tag=TAG20130616T080419 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:02:36
channel ORA_DISK_1: starting compressed full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 16-JUN-13
channel ORA_DISK_1: finished piece 1 at 16-JUN-13
piece handle=/home/oracle/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_16/o1_mf_ncsnf_TAG20130616T080419_8vvo4k8w_.bkp tag=TAG20130616T080419 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 16-JUN-13
RMAN>
Here's the subsequent DROP TABLESPACE :
SQL> drop tablespace APEX_2614203650434107 including contents and datafiles;
Tablespace dropped.
SQL>
What happens when I try to LIST the BACKUP of the datafile / tablespace ?
RMAN> list backup of datafile 10;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of list command at 06/16/2013 08:07:44
RMAN-20201: datafile not found in the recovery catalog
RMAN-06010: error while looking up datafile: 10
RMAN>
RMAN> list backup of tablespace APEX_2614203650434107;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of list command at 06/16/2013 08:12:12
RMAN-20202: Tablespace not found in the recovery catalog
RMAN-06019: could not translate tablespace name "APEX_2614203650434107"
RMAN>
What does a full LIST BACKUP OF DATABASE show ?
RMAN> list backup of database ;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
4 Full 799.58M DISK 00:02:30 16-JUN-13
BP Key: 4 Status: AVAILABLE Compressed: YES Tag: TAG20130616T080419
Piece Name: /home/oracle/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_16/o1_mf_nnndf_TAG20130616T080419_8vvnzn37_.bkp
List of Datafiles in backup set 4
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- --------- ----
1 Full 14093203 16-JUN-13 /home/oracle/app/oracle/oradata/orcl/system01.dbf
2 Full 14093203 16-JUN-13 /home/oracle/app/oracle/oradata/orcl/sysaux01.dbf
3 Full 14093203 16-JUN-13 /home/oracle/app/oracle/oradata/orcl/undotbs01.dbf
4 Full 14093203 16-JUN-13 /home/oracle/app/oracle/oradata/orcl/users01.dbf
5 Full 14093203 16-JUN-13 /home/oracle/app/oracle/oradata/orcl/example01.dbf
10 Full 14093203 16-JUN-13
11 Full 14093203 16-JUN-13 /home/oracle/app/oracle/oradata/orcl/ORCL/datafile/o1_mf_hemant_8pnowslc_.dbf
RMAN>
Datafile 10 appears as a NULL entry. It cannot be restored as it no longer belongs to the database.
A RESTORE obviously fails :
RMAN> restore datafile 10;
Starting restore at 16-JUN-13
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 06/16/2013 08:15:32
RMAN-20201: datafile not found in the recovery catalog
RMAN-06010: error while looking up datafile: 10
RMAN>
So, there you have it. Once a datafile doesn't belong to the database it cannot be restored.
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