Hi Mathias, I guess that shows how much I've used PCTUSED -- never! But my original question remains -- how do I test the effects of the deletes in order to predict future performance? Thanks! Rich > Hi Rich, > > on ASSM tablespace specification of PCTUSED and FREELISTS is ignored. > > HTH Mathias > > > -----Original Message----- > From: oracle-l-bounce@xxxxxxxxxxxxx > [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Rich Jesse > Sent: Wednesday, December 03, 2008 4:35 PM > To: oracle-l@xxxxxxxxxxxxx > Subject: Re: Calculating effects of increasing PCTUSED > >> What I'm not sure of is how to test the performance impact of this > change. >> I had it in my head that I'd need to monitor the freelist size so I >> can extrapolate performance impact for the next "x" months/years, but >> I'm not sure how to find that. > > Sorry, the tablespace is ASSM, so I should have said "bitmap" instead of > "freelist". I guess I still (incorrectly) think of it terms of a > freelist. > > Rich -- //www.freelists.org/webpage/oracle-l