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RE: Embarasing question ....

From: Norman Dunbar <>
Date: Thu, 17 May 2007 08:21:18 +0100
Message-Id: <>

Morning all,

John & Andrew - you both mentioned that an 'alter table move' would cause indexes to become unusable. This problem has occurred on a production database and no apparent cause has been found. There were around 50 indexes on assorted tables that 'suddenly' went invalid (but only in DBA_OBJECTS not in DBA_INDEXES where they showed up as VALID and not UNUSABLE) and none of the tables were moved.

There was a patch applied to the database previous to the problem, but that had been through testing etc and had not caused invalid indexes there. It was reapplied to another development database after the problem was noted and did not cause any problems there either.

In the words of Jim Steinman "Two Out Of Three Ain't Bad" - but in this case, it is !

Thanks again. I'm still hunting for a cause.


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

Internal : 7 28 2051
External : 0113 231 2051

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Received on Thu May 17 2007 - 02:21:18 CDT

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