Is this Needed?

I just received a notice from our technical team leader that we were going to 
schedule a 'refresh' on our transactional database in order to improve 
performance. They are going to truncate and reimport the production schema.  Is 
this technique useful for a 9i database?  I'm thinking that in earlier versions 
of Oracle it might have been helpful but on the other hand I don't see any 
discussion of this on any board that I am monitoring.  Is this a waste of time?

Don Freeman
Database Administrator 1
Bureau of Information Technology
Pennsylvania Department of Health
717-783-8095 Ext 337

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