FORCE
Causes RMAN to ignore backup optimization. In other words, even if CONFIGURE BACKUP OPTIMIZATION is set to ON, RMAN backs up all specified files.


Note: You can also specify this option in the backupSpecOperand clause.
加上FORCE選項，則RMAN忽略調CONFIGURE里的優(yōu)化功能選項．
比如：你配置了RMAN優(yōu)化功能為ON，之前對只讀表空間作了備份，這時，再備份全庫，不加FORCE.
則RMAN不會備份只讀表空間，因為之前已經備份過，加上FORCE，則RMAN忽略掉優(yōu)化功能，
作全庫備份．


RMAN> show all;


RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION ON;


SQL> alter tablespace tools read only;


Tablespace altered.
RMAN> backup tablespace tools;


Starting backup at 21-DEC-07
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00004 name=D:ORACLEORADATAPAULTOOLS01.DBF
channel ORA_DISK_1: starting piece 1 at 21-DEC-07
channel ORA_DISK_1: finished piece 1 at 21-DEC-07
piece handle=D:BACKUP3IJ454LF_1_1 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 21-DEC-07


Starting Control File and SPFILE Autobackup at 21-DEC-07
piece handle=D:BACKUPC-1605165889-20071221-03 comment=NONE
Finished Control File and SPFILE Autobackup at 21-DEC-07


RMAN> backup database;


Starting backup at 21-DEC-07
using channel ORA_DISK_1
skipping datafile 4; already backed up 3 time(s)
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=D:ORACLEORADATAPAULSYSTEM01.DBF
input datafile fno=00002 name=D:ORACLEORADATAPAULUNDOTBS01.DBF
input datafile fno=00003 name=D:ORACLEORADATAPAULINDX01.DBF
input datafile fno=00005 name=D:ORACLEORADATAPAULUSERS01.DBF
channel ORA_DISK_1: starting piece 1 at 21-DEC-07
channel ORA_DISK_1: finished piece 1 at 21-DEC-07
piece handle=D:BACKUP3KJ454M1_1_1 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
Finished backup at 21-DEC-07


Starting Control File and SPFILE Autobackup at 21-DEC-07
piece handle=D:BACKUPC-1605165889-20071221-04 comment=NONE
Finished Control File and SPFILE Autobackup at 21-DEC-07


RMAN> backup database force;


Starting backup at 21-DEC-07
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=D:ORACLEORADATAPAULSYSTEM01.DBF
input datafile fno=00002 name=D:ORACLEORADATAPAULUNDOTBS01.DBF
input datafile fno=00003 name=D:ORACLEORADATAPAULINDX01.DBF
input datafile fno=00005 name=D:ORACLEORADATAPAULUSERS01.DBF
input datafile fno=00004 name=D:ORACLEORADATAPAULTOOLS01.DBF
channel ORA_DISK_1: starting piece 1 at 21-DEC-07
channel ORA_DISK_1: finished piece 1 at 21-DEC-07
piece handle=D:BACKUP3MJ454NL_1_1 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:55
Finished backup at 21-DEC-07


Starting Control File and SPFILE Autobackup at 21-DEC-07
piece handle=D:BACKUPC-1605165889-20071221-05 comment=NONE
Finished Control File and SPFILE Autobackup at 21-DEC-07


RMAN>

總結

以上是生活随笔為你收集整理的rman backup database force 功能的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。