RE: ** identify time/number for individual table, index accesss within a sql
Date: Sat, 24 Jan 2009 07:16:56 -0800 (PST)
Message-ID: <377621.10896.qm_at_web57503.mail.re1.yahoo.com>
Mark,
Thanks. Yes, I see explain plan gives an idea for the number of table/index access. However, I want to know the actual time taken for index access and the actual number of times index was accessed. I know this information can be gotten from 10046. Meaning : total time for query, time for table and index accesses within this query. I do not know how to get it. Can someone help. Thanks
- On Thu, 1/22/09, Powell, Mark D <mark.powell_at_eds.com> wrote:
From: Powell, Mark D <mark.powell_at_eds.com> Subject: RE: ** identify time/number for individual table, index accesss within a sql To: ajoshi977_at_yahoo.com, oracle-l_at_freelists.org Date: Thursday, January 22, 2009, 12:14 PM
If you have a trace why not run tkprof on it and look at the summary information as a starting point. Also one of the tkprof options is to show the explain plan which would allow you to see the index/non-index accesses.
-- Mark D Powell --
Phone (313) 592-5148
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of A Joshi Sent: Thursday, January 22, 2009 11:02 AM To: oracle-l_at_freelists.org; ajoshi97_at_yahoo.com Subject: ** identify time/number for individual table, index accesss within a sql
Hi,
For : OLTP database
Oracle version : 10G
OS : SunSolaris
For a procedure taking a long time : I have taken a 10046 trace. From that I can do tkprof and get the times for individual sql. Now : How do I get time taken for and number of table, index accesses within a sql query. For example : i have sql joining upto 6 tables and some are full table scan and some are index access. I want to know which one is taking time. Please help and thanks. I am able to estimate full table time by running it from sqlplus. I think full table with some checks takes longer. For index access : I can estimate for single index scan : however : i do not know how index scans are taking place. From the explain plan I was trying to go in the order : but there also doing the order is not easy. Can someone help me figure this out. Thanks
-- http://www.freelists.org/webpage/oracle-lReceived on Sat Jan 24 2009 - 09:16:56 CST