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Re: why do you apply undo before redo?

From: Laconic2 <laconic2_at_comcast.net>
Date: Tue, 20 Apr 2004 11:53:10 -0400
Message-ID: <SLCdnaMuQaWu2hjdRVn-tw@comcast.com> 





What if you were "in the middle of committing"  at the moment of the crash.



Couldn't either the redo log, or the database,  or the two of them taken
together be in an inconsistent state?



Wouldn't it be necessary to resolve that inconsistency, if possible,  by
rolling back transactions in progress,  before applying the redo to the
database?
Received on Tue Apr 20 2004 - 10:53:10 CDT












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