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. [EMAIL PROTECTED] -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: DENNIS WILLIAMS 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).
