Re: Possibility of changing Rowid because of UPDATE operations

From: Jay Hostetter <jhostetter_at_decommunications.com>
Date: Tue, 16 Mar 2004 15:07:53 -0500
Message-ID: <s05718b2.080@ephsvr25.dande.com>

If you update a partitioned key, the row could move to another partition (if row movement is allowed for the table, which was not the default behavior in 8i).

Jay

>>> Prasada.Gunda_at_hartfordlife.com 03/16/04 01:52PM >>>

Hello All,

Do you think of any situation where Oracle would change the rowid(or move the row that causes rowid change) under the hood in 8i/9i or even in 10g if there are simply Update operations happen on a row?

I know that the Rowid of the row is not going to change when there is a row chaining/migration. So, this is not an issue. And, I understand that the Rowid would change in other situations like row is deleted/inserted, table is exported/imported, truncated/reloaded or alter table..move and other similar operations.

But, I am only concerned with Update operations. Even in IOT and Cluster tables, I believe Oracle would maintain the same rowid if there is an Update to a row.

Please let me know your thoughts/suggestions.

Ours is a DW environment and would like to use the rowids to identify changes in the source table where there is no primary/unique key.

Thanks in advance,

Best Regards,
Prasad

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Received on Tue Mar 16 2004 - 14:06:17 CST