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Home -> Community -> Mailing Lists -> Oracle-L -> Re:Index Rebuilds and Extents - Thanks
Thanks everyone for your responses.
I am dropping all the indexes to allow a load to run as quickly as possible, so rebuild isn't an option.
I got different opinions! Guess I'll have to <ack> experiment and see what works best.
Thanks
Lisa
dgoulet_at_vicr.com on 05/05/2000 03:46:07 PM
To: Lisa Koivu/GELCO_at_GELCO, Multiple recipients of list ORACLE-L
<ORACLE-L_at_fatcity.com>
cc:
Subject: Re:Index Rebuilds and Extents
Lisa,
I lean toward the idea of having an index or table for that matter all in one extent if possible. Also assuming your on 8.0+ could you try using 'alter index rebuild' vs dropping & rebuilding from scratch? I've seen that method work much faster & have less end user impact.
____________________Reply Separator____________________Subject: Index Rebuilds and Extents
Hello everyone, happy Friday!
I am overhauling an index rebuild script. The indexes in this script are dropped and rebuilt nightly. Yesterday when I was revisiting storage, my goal was to see if I could get the minimum number of extents possible when rebuilding each index, so I re-set my initial extent size to be large enough, in some cases 150M (non partitioned). However after doing so I began to wonder, am I exacerbating fragmentation by doing this? Even if each index is dropped and rebuilt nightly?
So here's my question to you:
What's better: Having an index all in one extent or having uniform extents in the tablespace that the indexes reside in? After thinking about it I'm beginning to lean toward uniform extents.
Your input is appreciated.
Thanks
Lisa
-- Author: INET: Lisa_Koivu_at_gelco.com 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: 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 Mon May 08 2000 - 08:54:26 CDT
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