accessing data in Oracle's address space is undeniably faster than cache out in storage. Oracle doesn't cache everything in the SGA though. ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of LS Cheng Sent: Sunday, August 05, 2007 12:40 PM To: binhpham15@xxxxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Fencing Cache in Disk Array for Oracle Hi I dont know how to do that but is it a good idea to assign another cache layer to Oracle or better get a bigger SGA? I have heard all sort of opinions... Thanks