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. http://www.hotsos.com Upcoming events: - Hotsos Clinic, Jul 23-25 Chicago - 2003 Hotsos Symposium on OracleR System Performance, Feb 9-12 Dallas -----Original Message----- oraora Sent: Thursday, July 11, 2002 6:33 AM To: Multiple recipients of list ORACLE-L Guys, Querying my v$session_wait shows 10 rows each DB FILE SEQUENTIAL READ and DB FILE SCATTERED READ. manuals explain it all b'coz of I/O. there are 33 tables and 110 indexes in the same USERS tablespace with only one datafile USERS01.DAT of size 12GB. it's physically laid out in D:\oracle\data. but the hard disk capacity is 100GB with 8 disk heads and RAID5. will not moving the tables and indexes to seperate tablespace reduce I/O traffic ? my manager here says that since it is configured with RAID5 and 8 disk heads , it's not a problem. is it so ? is he right ? plz. clarify me. i need to explain him. it's urgent.he is sitting on my head. TIA. _________________________________________________________ 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Cary Millsap 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).
