Monday, August 31, 2009

Delete Archivelog files without using RMAN

Here I am explaining two methods to delete archive logs and other database files with out using RMAN from ASM Disk Group in Oracle 10g/11g.

Method 1: asmcmd - ASM command-line utility
ASMCMD> rm file_name
For ex:-ASMCMD> rm ‘+dgroup2/testdb/archivelogs/thread_1_seq_363.510.1’
Or
ASMCMD> rm ‘+dgroup2/testdb/datafile/USERS.250.5334166963’

If you use a wildcard, rm deletes all matches except non-empty directories (unless the -r flag is used). The rm command can delete the file or alias only if the file is not currently in use by a client database.

Method 2: SQLPLUS utility
SQL> ALTER DISKGROUP DROP file
For ex:- SQL> ALTER DISKGROUP FLASH DROP FILE ‘+FLASH/testdb/archivelog/2009_08_11/thread_1_seq_363.510.1';

The “asmcmd” and “sqlplus” commands will not update the database views (V$ARCHIVED_LOG, V$FLASH_RECOVERY_AREA_USAGE), controlfile, Recovery Catalog that the files have been removed.

To update the Database views, control file or RMAN Catalog about deleted files you need to run the below command from RMAN.

RMAN> CROSSCHECK ARCHIVELOG ALL;
RMAN> DELETE EXPIRED ARCHIVELOG ALL;

Click here to learn How to delete archive logs from ASM.
Regards,
Satishbabu Gunukula
http://www.oracleracexpert.com/

1 comment:

  1. Hi,
    I have a question for you.
    1. Can Rman retention window do anything to delete archivelog file? I think it only can remove backup files like full backup or incremental backupfile. nothing to do with archivelog, right?
    2. Do I have to have a crontab job to remove these archivefiles, anyways these archivelog can be auto removed?
    3. what is 'expired archivelog', by what standard to identify if they are expired or not?
    I have watch your website, it is a very good one. and getting better and better...
    thank you,

    ReplyDelete