Slow backups on Netbackup 4.5 on Solaris 9

[systemsadmin3000]

Hi All,

We currently use netbackup 4.5 to backup our Oracle database in a Solaris 9 environment. A backup of the relevant directories to tape via netbackup would take approx 11hrs. However if we do a tar command of the same directories to the same tape drive it only takes 3 hrs. We do not have the compression option checked in the netbackup policy. Can anyone advise on what could be causing this, form all things it seems to be a netbackup issue.

thanks.

 

[borchdp]

Howdy,

NetBackup tracks the location and name of every file it backs up, and writes it to the Catalog. In a case when there are millions of files to backup this could slow the process. (TAR doesn't need to track any files other then the ones in the archive, so it runs faster.) As I'm sure you know NBU 4.5 hasn't shipped in 6 years and is unsupported. If possible, consider upgrading to 6.5. A few things to look at: Make sure the Oracle backup in not multiplexed, (multiplexing is not recommended for DB backups as the DB is basically 1 file) You could install NetBackup for Oracle and let the RMAN perform the backup (faster).

Thanks,

 

[Stumpr]

Minimum system requirements for the Solaris kernel when used with VERITAS NetBackup (tm), defined in /etc/system

http://seer.entsupport.symantec.com/docs/238063.htm

3rd PARTY: Additional tuning information/suggestions for Solaris 9 systems running NetBackup 4.5

http://seer.entsupport.symantec.com/docs/264967.htm

Bob Stump
VERITAS - "Ain't it the truth?"

 

[systemsadmin3000]

Thanks all. I would try those recommendations and provide feedback.

 

[systemsadmin3000]

Ok here goes:

I tried the suggestions in articles:

http://seer.entsupport.symantec.com/docs/238063.htm

&

http://seer.entsupport.symantec.com/docs/264967.htm

but no change in performance.

I had to make the changes on the Veritas end recommended in article:

http://support.veritas.com/docs/183702

After the changes were made my backup time went from 11hrs to 2hrs. Amazing.

Thanks for all the help guys...