Drop unused Column

From: Ken Payton <ken.payton_at_choicepointprg.net>
Date: Wed, 03 Aug 2005 15:58:32 -0400
Message-Id: <1123099112.4614.33.camel@kpaytonlap.na.choicepoint.net>

After issuing a drop unused column statement an error occured due to rollback space. The column was re-issued with a checkpoint and it continued. After re-issuing the command applications started have problems accessing the table and the DBA killed the drop unused column session. The table is now in a Partially Dropped state. Now in this state the table is unaccessible and per documentation it appears the only available scenario is to continue with the drop command. Unfortunately, for the same reasons the column was altered unusable to begin with was the time frame of such an operation. We are estimating 50 hours on 5 Billion row table. The sad part is the column is not even populated. The column is the next from last, although the last column is also not populated. Both columns were added at the same time and have never had any data in them.

Any ideas on how to get the table back without waiting for the drop to occur? We can worry about dropping the column later, at such point we have time.

Kenny

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Kenny Payton
Software Architect
Public Records Group
Choicepoint, Inc.
ken.payton_at_choicepointprg.net
o: (770)752-4054

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http://www.freelists.org/webpage/oracle-l Received on Wed Aug 03 2005 - 15:00:57 CDT