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If using the IBM job scheduler, it does account for dst changes and does not repeat jobs scheduled during the dst change times. I have verified that with IBM several years ago w/the developers who were at Common).

Jim Franz

----- Original Message ----- From: "Dennis Lovelady" <iseries@xxxxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'" <midrange-l@xxxxxxxxxxxx>
Sent: Thursday, October 29, 2009 4:11 PM
Subject: RE: Time change this weekend


http://publib.boulder.ibm.com/infocenter/iseries/v6r1m0/topic/rzati/rza
ticoncepts.htm

Thanks, Rob. Like the former article, this 6.1 System i documentation seems
to be in disagreement with your prior summary and supports what Bruce said.
Quoting:

Time-sensitive programs are scheduled to run during the hour that DST starts
or ends. Because that hour is skipped or repeated, time-sensitive programs
might encounter unpredictable results. The following conditions can occur:

* Jobs might run twice, thus unnecessarily affecting the performance of
the system.
* Jobs might not run at all; thus, work is not completed.
* Programs might retrieve the wrong time value.

Dennis Lovelady
http://www.linkedin.com/in/dennislovelady
--
"How is it that our memory is good enough to retain the least triviality
that happens to us, and yet not good enough to recollect how often we have
told it to the same person?"
-- Duc de La Rochefoucauld

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