You may find this helpful in reducing the amount of db cleaning time:

  http://seer.support.veritas.com/docs/236274.htm

IMO (and I've been in your situation), you really need to have a
window every day for the database backup (and anything else you need
to do).  This may include improving your infrastructure (network, tape
drives, etc).  Are you doing duplications also (adding more drives may
help speed this up)?  If you've got files that don't change and are
kept for long periods of time, but end up getting backed up in every
full, you might want to look at NetBackup Storage Migrator.

Brian_Drager AT vanguard DOT com writes:
> Since we can only get a database backup once a week because we can't back up
> everything we have in 24 hrs we have to cancel our backups that are running on
> Thursday so that we can get a database backup. This is the question I have. I
> know th DB clean will take a while because it's doing a weeks worth of 
> deleting.
> Once the database backup starts and mounts the tape it takes another 7 +
> additional hours for it to complete. Is this neormal? The file system  for
> /opt/openv is 93 gig of used space with a capacity of 153 gig.
> 
> Thanks
> 
> 
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-- 
Larry Kingery 
      Why is it called tourist season if we can't shoot at them?