Table Scans

From: Jay Earle (DBA) <Jay_Earle_at_smartforce.com>
Date: Wed, 09 Oct 2002 08:33:51 -0800
Message-ID: <F001.004E483C.20021009083351@fatcity.com>

I am looking for a query that will allow me to find the SQL statements that are responsible for Full Table Scans.

I understand that sometimes a full table scan is the best way to return data but I would like to evaluate this on a case by case basis.

I use the following query to identify the Tables were recently accessed by a full table scan, however, that still leaves me with over 100 statements to trace.

set serverout on size 1000000
set verify off
col object_name form a30
SELECT distinct(o.object_name),o.object_type,o.owner FROM dba_objects o,x$bh x
WHERE x.obj=o.object_id
AND o.object_type='TABLE'
AND standard.bitand(x.flag,524288)>0
AND o.owner<>'SYS';

Thanks

Jay
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Author: Jay Earle (DBA)
  INET: Jay_Earle_at_smartforce.com

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