SQL tuning help

From: Sergei <sergei_at_netflip.com>
Date: Tue, 26 Nov 2002 10:54:25 -0800
Message-ID: <F001.0050C591.20021126105425@fatcity.com>

Hello everybody,

I have the following query that runs every week.

UPDATE tmp_brian_metareward1 tmp
  SET offers_seen = (SELECT count(f.fastcash_id) FROM metareward.fastcash f

                             WHERE f.subsite_id = tmp.subsite_id
                               and attempt >= trunc(sysdate-1)
                               and attempt < trunc(sysdate)
                             group by tmp.subsite_id);

This week it began to hang and I can't figure out why. No changes were made to a database. Please advise me on how I can tune it, which hints to add, or anything else I can do.

Thank you
Sergei

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Author: Sergei
  INET: sergei_at_netflip.com

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