Hi, The "vmstat -s" command shows the number of revolutions of clock hand. My SA says that if it increases by 3 or more per minute (i.e. 1 or more per 20 seconds) thhen it indicates a shortage of real memory. I have searched for information on the clock hand revolutions and have not been able to find it. Could someone explain to me what is is. Many thanks. Long -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Nguyen, Long 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).