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I wrote an LIO monitor, that should help to show what kind of LIO you are
doing. It could help explain the difference in time. Give it a try and let
me know what you see. Download it from oraperf.com
Anjo.
> List - As I mentioned earlier, a new manager came from a site that
regularly
> rebuilt tables. I protested the value of this, but his response was "well,
> at least you could test it." So on a test instance I've been doing a CTAS
to
> create a reorganized copy of the table in the same tablespace (LMT with
> uniform extents, autoextend on). As expected, the number of blocks is very
> close.
> Then I've been doing a FTS (select count(*)) on both tables. Usually
the
> time is very close. However, on one large table, the original is much
faster
> -- 18-sec. vs. 27-sec. 21,349 blocks vs. 21179. Same plan. Does anyone
have
> a theory for this discrepancy?
>
> Dennis Williams
> DBA, 40%OCP, 100% DBA
> Lifetouch, Inc.
> dwilliams_at_lifetouch.com
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: DENNIS WILLIAMS
> INET: DWILLIAMS_at_LIFETOUCH.COM
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Anjo Kolk INET: anjo_at_oraperf.com 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: ListGuru_at_fatcity.com (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).Received on Fri Apr 04 2003 - 18:58:38 CST