can anyone recommend a good article managing sort_Area_size and understanding temp tablespace waits? ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Thursday, September 18, 2003 6:34 PM
> > I have been doing some alter sessions to improve performance of gigabyte > sized 'minus' operations. How do I tell if this is helping other than > completion time? > > > > I believe that if LIOs to PIOs ratio improves with the SAME query then > sort_area_size has helped right?(notice Im not trying to improve my > cache/hit ratio). > > If you see less direct IO waits on your temporary tablespace, then > increasing s_a_s has helped. > > > > > I get this from v$sess_io. > > > > how do I tell how much temp tablespace my session uses? I cant find a > statistic for it? I see that I used up all my PGA since PGA size and PGA max > size are equal in v$sesstat. > > select * from v$sort_usage where sid = <sid>; > > > anything else I can look at? > > Activity on temp tablespace from v$tempstat.. but it's only good enough for > comparing with baselines.. > > Tanel. > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Tanel Poder > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Ryan INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).
