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RE: Embarasing question ....

From: Kerber, Andrew W. <>
Date: Wed, 16 May 2007 11:14:33 -0500
Message-ID: <>

Indices will become unusable because of an alter table move. You have to rebuild the indices immediately after the move. I don't know if the move online will prevent this or not.

-----Original Message-----
[] On Behalf Of Fedock, John (KAM.RHQ)
Sent: Wednesday, May 16, 2007 10:51 AM
Subject: RE: Embarasing question ....

I've seen indexes become "unsable" when an "alter table move ..." is done and the corresponding indexes are not rebuilt.

select *
  from dba_indexes
 where status = 'UNUSABLE' order by table_name

Hope this helps.

John Fedock

-----Original Message-----
[] On Behalf Of Norman Dunbar Sent: Tuesday, May 15, 2007 9:55 AM
To:; Cc:
Subject: RE: Embarasing question ....

Hi Richard,

>> "Richard J. Goulet" <> 05/14/07 04:38PM >>>
>> AH, another missing piece of the puzzle, we're talking about
>> based indexes.

Even worse, these are DOMAIN indexes not Function Based. But they are effectively the same as there's a 'package body' (OBJECT TYPE) doing the 'code'.

>> Well if the function that was used to create the index
>> was rebuilt/modified that would explain everything. Especially if
>> a non oracle provided function.

Now that I could understand as it's nornal behaviour (unless it's a package BODy being compiled) but we had an export problem with these indexes previously, the call to get the metadata for the index failed as the vendor had created it based on the wrong interface - it needed to use the V2 interface with an OCIEnv parameter. We logged this with the vendor and received a script to rebuild these index types and recreate all the indexes.

We have run this and none of the indexes were invalid (nor were the objects!) - it was one of the things we tested against the test system to see if we could identify the root cause. Everything was fine - so I'm still hunting for causes.



Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.

Internal : 7 28 2051
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Received on Wed May 16 2007 - 11:14:33 CDT

Original text of this message