> #1. what is the difference in the 4 BCHR's in 9i? What do you mean by that? Are you refferring to different buffer pool stats here?
> #2. How do you determine whether your buffer cache is sized properly? Your application meets it's defined operational response time and throughput constraints. Tanel. > ----- Original Message ----- > To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> > Sent: Saturday, December 27, 2003 9:34 AM > > > > Hi Yong > > > I agree that "It's not the ratio that needs condemning, it's > > > the advice about..." What I disagree is the wrong educational > > > tool people on public forums have recently used again and > > > again to show the inadequacy of the BCHR tuning method. > > > > The thing is most people who have used this demonstration, use it for 2 > > reasons > > > > 1. It is immediately recognised and empathised with by the audience and > > 2. It is easily explained. "How does it work, by doing pointless io, hmmm > I > > wonder if that is a problem with my real system." > > > > You are of course in principle correct that one could use the same > technique > > against other ratios, my suggestion would be that this might also be > > appropriate for similar reasons. My CPU is 75% utilized on my web server, > I > > wonder does this mean it is well specified or that I am doing pointless > cpu > > work? > > > > If people are merely saying "the bchr is useless, here is a script that > will > > create one for you" then I would agree with you, but in my experience the > > argument is more cogent than that. > > > > Niall > > > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.net > > -- > > Author: Niall Litchfield > > 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). > -- 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).
