RMAN delete的用法

Delete backups (and copies) from disk or tape, and update the RMAN repository. 

Syntax: 

DELETE [FORCE] [NOPROMPT] 
{ [EXPIRED] 
{ 
{ BACKUP [OF listObjectList] 
| COPY [OF listObectjList] 
| archivelogRecordSpecifier 
} [maintQualifier [maintQualifier]...] 
| recordSpec [DEVICE TYPE deviceSpecifier [, deviceSpecifier]...] 
} 
| OBSOLETE [obsOperandList] 
[DEVICE TYPE (deviceSpecifier [, deviceSpecifier]...] 
}; 

obsOperandList::= 
[ REDUNDANCY [=] integer | RECOVERY WINDOW OF integer DAYS | ORPHAN ]... 

recordSpec::= 
{ { BACKUPPIECE | PROXY } 
{ 'media_handle' [, 'media_handle']... 
| primary_key [, primary_key]... 
| TAG [=] ['] tag_name ['] 
} 
| BACKUPSET primary_key [, primary_key]... 
| { CONTROLFILECOPY | DATAFILECOPY } 
{ { primary_key [, primary_key]... 
| 'filename' [, 'filename']... 
} 
| TAG [=] ['] tag_name ['] [, ['] tag_name [']]... 
} 
| ARCHIVELOG 
{ primary_key [, primary_key]... 
| 'filename' [, 'filename']... 
} 
} 

listObjectList::= 
[ DATAFILE datafileSpec [, datafileSpec]... 
| TABLESPACE ['] tablespace_name ['] [, ['] tablespace_name [']]... 
| archivelogRecordSpecifier 
| DATABASE [SKIP TABLESPACE ['] tablespace_name ['] 
[, ['] tablespace_name [']]...] 
| CONTROLFILE 
| SPFILE 
]... 
Examples 

RMAN> CONFIGURE CHANNEL DEVICE TYPE sbt; 
RMAN> CROSSCHECK BACKUP OF TABLESPACE user_data COMPLETED BEFORE 'SYSDATE-14'; 
RMAN> DELETE NOPROMPT EXPIRED BACKUP OF TABLESPACE user_data COMPLETED BEFORE 'SYSDATE-14'; 
RMAN> DELETE BACKUP OF DATABASE LIKE '/tmp%'; 
RMAN> DELETE ARCHIVELOG ALL BACKED UP 2 TIMES TO DEVICE TYPE sbt; 
RMAN> DELETE BACKUPSET 101, 102, 103; 
RMAN> DELETE CONTROLFILECOPY '/tmp/cntrlfile.copy'; 
RMAN> DELETE BACKUP OF SPFILE TABLESPACE users DEVICE TYPE sbt; 
Delete backups and copies (and archived redo logs ) that will not be needed to perform any possible recovery of the database to any point in the last 7 days. 
DELETE NOPROMPT OBSOLETE RECOVERY WINDOW OF 7 DAYS;

参考文档

http://download.oracle.com/docs/cd/B19306_01/backup.102/b14194/rcmsynta023.htm#RCMRF121 

http://ss64.com/ora/rman_delete.html

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