Allen, Does this hold true for 64-bit Windows as well? Until seeing this thread I was unaware of the /3GB switch available for windows. It sounds analogous to compiling in the hugemem kernel in Linux. Or are the two unrelated? On Technet so far the only document I have found is the 32-bit Oracle Database Platform Guide, chapter 1. Can you point out a good source of information on this please. Thanks. Bill Wagman Univ. of California at Davis IET Campus Data Center wjwagman@xxxxxxxxxxx (530) 754-6208 ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Allen, Brandon Sent: Monday, July 16, 2007 3:07 PM To: saints.richard@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: RE: Oracle on Windows 2000 AS with /3GB flag I always use the /3G flag on all Windows database servers - for both Oracle and SQL Server. I've used it several times on different combinations of Windows, SQL & Oracle versions and never had any problems. Regards, Brandon Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.