Another thing to consider is that the object id may be needed for
recovery/rollback/read consistency purposes. The object id is one of the fields kept
in the undo record. I presume this is for a sanity check to make certain that the undo
is being applied to the right object. I wonder if the same field is part of the redo
record? If Oracle does not reuse object ids, then an undo record would not be
mistakenly applied to the object that has now allocated that file.block.row even if it
is not the
same object that was originally the source of the undo.begin:vcard
n:Fink;Daniel
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title:DB Services Lead
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fn:Daniel Fink
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Received on Tue Jun 24 2003 - 13:43:54 CDT
