Oracle-L: RE: Oracle 9.2 spfile catch 22

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Fri, 12 Jul 2002 14:02:29 -0800
Message-ID: <F001.00496F52.20020712140229@fatcity.com>

Everything self tuning .... yeah it works.

I have two identical tables (with different number of rows of course) and separately analyzed. They have identical index. When I run select on both tables after supplying a value for the PK, the query on main table uses the PK index and works fine. The query on second table (identical, except for different table name), uses a concat index with 'index skip scan' instead of pk.

I have no explanation, does anyone have any? I have the 10053 dump available if you need it. I am trying to understand "WHY" it isn't using the pk and resorting to skip scanning? The db is 9012.

Raj

Rajendra Jamadagni MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.

QOTD: Any clod can have facts, but having an opinion is an art!

-----Original Message-----
Sent: Friday, July 12, 2002 5:43 PM
To: Multiple recipients of list ORACLE-L

I just like that 'dream' of 'no dba required' ;) 'cause I have heard enough presenters mention it... the new self tuning 9i, the new 'everything dynamic' 9i and such......

Kirti

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Author: Jamadagni, Rajendra
  INET: Rajendra.Jamadagni_at_espn.com

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Received on Fri Jul 12 2002 - 17:02:29 CDT