Powerhouse - Allbase problem

Fry, Mark Mark.Fry@COGNOS.com
Thu, 20 May 1999 07:10:45 -0400


Hi Andreas,

SET LOCK RECORD UPDATE in QTP has the same meaning as COMMIT AT UPDATE, so a
commit is done at the end of every add, update or delete.  This means that
effectively you have lost your rollback capability, since every add, update
or delete is done within a separate transaction.  SET LOCK RECORD UPDATE
also means that QTP is using the concurrency model, which utilises "Read
Committed" transactions with Allbase, so for every update or delete, QTP has
to perform a checksum validation to ensure that the row has not changed
since it was read.  This can slow things down a bit.

Best regards,

Mark Fry
Mark.Fry@Cognos.com

		-----Original Message-----
		From:	Noack, Andreas M.
[mailto:Andreas.Noack@BetzDearborn.com]
		Sent:	20 May 1999 11:28
		To:	POWERH-L@lists.swau.edu
		Subject:	RE: Powerhouse - Allbase problem

		Hallo Jeff and all,

		thanks for the quick reply. The solution seems to work, but
we are now
		afraid of follow-up problems. Having the default "lock file"
we were always
		sure that no commit was done if e.g. step 1 of the QTP
succeeded, but step 2
		failed. The rollback then always brought back the state
before the QTP. If
		we now set "lock record" what will be the behaviour in this
case? Can we
		also trust in a rollback for both steps or are actions from
step 1 already
		committed? Thanks again for pointing out.

		Kind regards
		Andreas Noack
		BetzDearborn
		A division of Hercules Inc.
		Development Group Europe
		Tel. : +32.16.395.290
		Fax : +32.16.395.368

		The opinions expressed above are my very own. Due to this
fact they may
		change anytime without further notice.

		

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