>>> >>> >>>Absolutely correct. As of today it's ~960G a day of undo/redo. The amount of undo shouldn't influence where you put the redo though. Can you actually tell us of this 960GB how much is redo? The undo part just muddies the water (given your original question). >>> >>>> > I think you are saying redo instead on undo. >>>> > >>>> > 800GB/day is quite a lot. It depends on whether your >>>i/o subsystem -- //www.freelists.org/webpage/oracle-l