Hi Stephane, If you're using a conventional file system on AIX, you can expect a reduction in performance by moving to 16K from your already imperfect 8K.
See Steve Adam's notes why the DB block size should = the file system buffer size (www.ixora.com). And that's *4K* on AIX. Cheers Richard ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Wednesday, October 22, 2003 4:59 AM > Hi, > > All our DB have an 8k block size (8172/aix). > Even the reporting/dss database where data is accessed mainly by full scan. > > Can we quantify the gain in % of switching from an 8k to 16k block size from > a performance point of view ? > > > > Stephane Paquette > Administrateur de bases de donnees > Database Administrator > Standard Life > www.standardlife.ca > Tel. (514) 499-7999 7470 and (514) 925-7187 > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Stephane Paquette > 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: Richard Foote 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).
