You can exceed the 256Mb, if you don't mind the continual swapping to disk, and the thrashing that comes with that. ;-) Usually not a good thing to do. It's usually a good idea to allow some room for the Operating System as well. just remember, Virtual Memory = disk swapping (usually).. -Joe ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Thursday, June 21, 2001 8:26 AM > Hi folks, > > as the subject indicates, I feel really stupid asking this question, but > here goes... > > If I have several Oracle 8i instances running on an NT Server with, say, > 256Mb of memory available, then does this mean that the sum of the SGA sizes > for all the instances, taken together, can't exceed 256Mb? As I say, it > feels like a stupid question, but the phrase "virtual memory" keeps popping > into my head! > > Paul > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Paul Vincent > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Joe Raube INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).