Oracle-L: RE: unusable indexes.

From: Seefelt, Beth <Beth.Seefelt_at_TetleyUSA.com>
Date: Fri, 30 May 2003 05:09:39 -0800
Message-ID: <F001.005A6C2A.20030530050939@fatcity.com>

I think the problem is skip_unusable... isn't an init.ora parameter. At least it wasn't in earlier versions. You can set it at session level 'alter session set skip_unusable_indexes...'. I ended up adding it to a logon trigger to make it affect all sessions.

HTH. -----Original Message-----
Sent: Thursday, May 29, 2003 8:20 PM
To: Multiple recipients of list ORACLE-L

hi
i am trying to figure out how unusable indexes could help me in certain cases like bulk loading etc. i am trying to understand how it works.

i created a table with a index and used a query which used this index.

later i made this index unusable and unless and until i make this index non-existent the query always returns a 1502 error trying to access the table thru the unusable index when i can see that full table scan is still an option. the init.ora parameter skip_unusable..is set up too.

version is 9.2.0.3 on aix 5l.

can someone clarify whether this is how it is supposed to work or am i missing something .

thanks
sai
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Author: Sai Selvaganesan
INET: ssaisundar_at_sbcglobal.net

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Author: Seefelt, Beth
INET: Beth.Seefelt_at_TetleyUSA.com

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