RE: tunning an index built

From: Kevin Toepke <ktoepke_at_rlcarriers.com>
Date: Tue, 08 Jul 2003 14:06:03 -0700
Message-ID: <F001.005C3E66.20030708133939@fatcity.com>

what is your sort_area_size? Try changing it to something huge (say 200MB)for the session...

alter session set sort_area_size = 200000000;

Kevin

-----Original Message-----
Sent: Tuesday, July 08, 2003 5:30 PM
To: Multiple recipients of list ORACLE-L

Hi.

I'm trying to tune an index build. The table currently has about 65mil rows and I'm building a unique index, which takes about 55min to finish. The table size is about 3.4G, index is about the same size. I have tried different degrees of parallelism (up to 32), nologging is set in the create index script as well as on the tablespace. I noticed a lot of i/o waits during the buid and a lot of paging to and from filesystem, the paging area however appears to be unused. when I do lsps -a, it only shows 1% usage. What should be my next move? What should I look at? i have increased db_cache to 800M, sort area to 50M

thanks

Gene

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Author: Kevin Toepke
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