Re: Monitor Index Usage
Note that 9.2 has the nice family of v$segment_statistic views that can give you this level of information very easily. It has advantages over v$object_usage in that is gives you an indication on how often indexes are used, rather than that they've been used. Although sampling and other factors may impact their accuracy, those indexes that have a very high ratio of logical reads to db block changes you know are highly used for legitimate index accesses, those closer to a 2-1 ratio are only being accessed mainly due to dml changes. A bit of investigation and experimentation and these views can be very useful. Cheers Richard - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Tuesday, November 11, 2003 10:19 AM Check this http://asktom.oracle.com/pls/ask/f?p=4950:8:F4950_P8_DISPLAYID:531147287 002 HTH GovindanK Oracle Certified Professional(8,8i) Brainbench Certified Master DBA(8) On Sun, 09 Nov 2003 20:59:25 -0800, Arvind Kumar [EMAIL PROTECTED] said: Hi all, is there a way to monitor index usages in oracle 8i ,like 9i v$object_usage? Thanks Arvind Kumar -- http://www.fastmail.fm - One of many happy users: http://www.fastmail.fm/docs/quotes.html -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: GKatteri INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Richard Foote INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: Monitor Index Usage
Richard ... thanks for this advise ... now I can add that to my list of observations ... Thanks Raj Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art ! -Original Message- Sent: Tuesday, November 11, 2003 8:20 AM To: Multiple recipients of list ORACLE-L Note that 9.2 has the nice family of v$segment_statistic views that can give you this level of information very easily. It has advantages over v$object_usage in that is gives you an indication on how often indexes are used, rather than that they've been used. Although sampling and other factors may impact their accuracy, those indexes that have a very high ratio of logical reads to db block changes you know are highly used for legitimate index accesses, those closer to a 2-1 ratio are only being accessed mainly due to dml changes. A bit of investigation and experimentation and these views can be very useful. Cheers Richard ** This e-mail message is confidential, intended only for the named recipient(s) above and may contain information that is privileged, attorney work product or exempt from disclosure under applicable law. If you have received this message in error, or are not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000 and delete this e-mail message from your computer, Thank you. **4 -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jamadagni, Rajendra INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Monitor Index Usage
Check this http://asktom.oracle.com/pls/ask/f?p=4950:8:F4950_P8_DISPLAYID:531147287002 HTH GovindanK Oracle Certified Professional(8,8i) Brainbench Certified Master DBA(8) On Sun, 09 Nov 2003 20:59:25 -0800, Arvind Kumar [EMAIL PROTECTED] said: Hi all, is there a way to monitor index usages in oracle 8i ,like 9i v$object_usage? Thanks Arvind Kumar -- http://www.fastmail.fm - One of many happy users: http://www.fastmail.fm/docs/quotes.html -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: GKatteri 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).
Monitor Index Usage
Hi all, is there a way to monitor index usages in oracle 8i ,like 9i v$object_usage? Thanks Arvind Kumar
