I have a question regarding the /3GB and /PAE switch. We have SQL 2000 enterprise edition running on Windows 2003 enterprise server. We have 6GB of physical memory. I have assigned 4GB to SQL server thru enterprise manager. /PAE is turned on and when I check perfmon it shows SQL memory used in 3GB's. But I am not sure whether to trust it since in the task manager sqlservr.exe shows only 100mb's being used by SQL server. But in the performance TAB of the task manager it shows 4GB's used in total. Can someone please shed some light on this? Is it required that /3GB switch to be on? Is there someother way to find how much memory is being exactly used by SQL server and how effectively it is using AWE? Thanks for all your help. Satish.