On Mar 23, 2007, at 2:17 PM, Muthukumar Kannaiyan wrote:

      Our Unix admins did archive with default mgmt class for
archive. Now they
want to change the duration. How do I do it?

As the Admin Guide says, "Archive copies remain bound to the
management class name specified when the user archived them", so you
can't re-bind.

You have two choices:

1. Perform the Archive again, using the proper management class.
   (And dispose of the erroneous ones.)

2. Change the retention of the archive copy group within the
   default management class - but realize that this affects all
   Archive files bound to that MC.

 Richard Sims