Cary Millsap, i selected the top 25 SQL statements in the system over various periods . all are SELECT statements only waiting for reads.
querying v$session_wait also shows more than 10 records each for DB FILE SCATTERED READS and DB FILE SEQUENTIAL READS.does not it mean that it's b'coz of I/O contention ? i am not sure . this is on RAID set up. will not seperating my tables and indexes to seperate tablespace help me ? guide me Cary.it's really urgent. i am novice DBA. On Thu, 11 Jul 2002 Cary Millsap wrote : >Moving stuff around won't reduce I/O traffic, it'll just spread >it >around across different devices. > >Don't focus on how much I/O your system does, focus on how much >*time* >an important process spends *doing* I/O. It's Amdahl's Law: If >you >improve I/O latencies by 50%, but your program spends only 2% of >its >response time doing I/O, then your program's response time will >improve >by only 1%. > > >Cary Millsap >Hotsos Enterprises, Ltd. _________________________________________________________ There is always a better job for you at Monsterindia.com. Go now http://monsterindia.rediff.com/jobs -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: oraora oraora 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).
