Guang Mei wrote: > > Hi, > > According to book "Oracle Performance Tuning 101" (By Gaja K. Vaidyanatha), > page 316: > > Oracle SGA Component Percent Memory Allocation > > Database buffer cache ~ 80 > Shared Pool area ~ 12 > ... > > This means 80% of SGA should be allocated to "Database buffer cache". Now I > have an oracle 8173 db running on Sun 2.8: > > SQL> select * from v$sga; > NAME VALUE > -------------------- ---------- > Fixed Size 73888 > Variable Size 278183936 > Database Buffers 409600000 > Redo Buffers 1040384 > > How would I know if my "Variable Size" is too large or not? Which tables or > views that I can query to find if my shared_pool_area is set properly? BTW, > the db performance has been fine so far for about a year. > > TIA. > > Guang Mei >
Whatever the quality of a book, never believe ratios. Sizes are HIGHLY dependent on what you do, and how you do it. If performance is fine, keep it as it is. -- Regards, Stephane Faroult Oriole Software -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Stephane Faroult 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).
