All, just an FYI, we are in the middle of a maintenance cycle, and happened to
pick up these offending PTF's awhile back. IBM does have an APARFIX
available. I'm working with them trying to gauge the confidence level in it.
They have updated the text of the APAR to include the conditions required for
it to occur. Probably a fairly rare case, but good to close the hole.
ERROR DESCRIPTION:
During CLOSE processing of an extended format dataset, a logic
error occurs causing the blocks at the end of the dataset to not
be written out to the dataset if the I/O has not completed yet.
Conditions for problem to occur:
- QSAM and OUTPUT
- Physical Sequential Extended Format dataset
- During close processing, the dataset must run out of space in
the current extent. This will drive EOV processing to get a
new extent and re-drive i/o.
- The i/o must not complete before we get to the invalid code
path. If it completes, there is no problem.
_________________________________________________________________
Dave Jousma
Manager Mainframe Engineering, Assistant Vice President
[email protected]
1830 East Paris, Grand Rapids, MI 49546 MD RSCB2H
p 616.653.8429
f 616.653.2717
-----Original Message-----
From: Jousma, David
Sent: Monday, October 02, 2017 7:51 AM
To: 'IBM Mainframe Discussion List'
Subject: RE: APAR OA53994
Thanks for the heads up Skip.
_________________________________________________________________
Dave Jousma
Manager Mainframe Engineering, Assistant Vice President [email protected]
1830 East Paris, Grand Rapids, MI 49546 MD RSCB2H p 616.653.8429 f 616.653.2717
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of Jesse 1 Robinson
Sent: Friday, September 29, 2017 3:11 PM
To: [email protected]
Subject: APAR OA53994
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I just got a notice from ASAP that APAR OA53994 has PEed PTF UA91904 , which
we installed in July. It looks pretty serious: records dropped at the end of an
extended format sequential file. We have had no reports of such a problem, but
it's pretty worrying. Has anyone stumbled on this crack in the sidewalk?
.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
323-715-0595 Mobile
626-543-6132 Office <===== NEW
[email protected]<mailto:[email protected]>
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