Perhaps I can save someone an outage. We ipled a lot of preventative
maintenance in our production lpars Sunday. This morning we started
getting severe enqueue conflicts for a number of catalogs. We called IBM
and by just describing the symptoms the rep said "I think I know your
problem". A hiper apar was released FRIDAY (OA19429):
SYSIGGV2 ENQ HANG WITH WAIT in module IGG0CLEG @ UA30836
07/01/02 PTF PECHANGE
Symptom ...... IN INCORROUT Status ........... OPEN
Severity ................... 1 Date Closed .........
Component .......... 5695DF105 Duplicate of ........
Reported Release ......... 1J0 Fixed Release ............
Component Name ICF CATALOG & C Special Notice PE HIPER
Current Target Date ..07/02/17 Flags
SCP ................... FUNCTIONLOSS
Platform ............
Status Detail: DESIGN/CODE - APAR solution is being designed
and coded.
PE PTF List: UA30834 UA30835 UA30836 UA30838 UA30837
PTF List:
Tentative Affected Releases and Current Relief Available:
Release 1G0 : Relief is available in the form of: AA19429
Release 180 : Relief is available in the form of: AA19429
Release 1H0 : Relief is available in the form of: AA19429
Release 1J0 : Relief is available in the form of: AA19429
Release 1K0 : Relief is available in the form of: AA19429
Parent APAR:
Child APAR list:
ERROR DESCRIPTION:
OA18860 introduces code that places us in a WAIT in order to
complete IO for spanned record updates. It has been found that
the flag indicating us to go issue this WAIT may be ON
unexpectedly. This causes tasks to hang holding the SYSIGGV2
resource.
.
TO VERIFY, review the holder of the SYSIGGV2 resource. In the
TCB's RB chain, you should see a WAIT. This apar is a match if
the WAIT was issued in module IGG0CLEG at level UA30834-30838.
LOCAL FIX:
Action should be taken to roll back PTFs for OA18860.
F CATALOG,RESTART or F CATALOG,ABEND may temporarily resolve
this issue.
++APARs are expected to be available no later than Jan 19,2007
Alan Schwartz
Assurant Shared Business Services
Lead Systems Programmer
Phone: 651-361-4758
Fax: 651-361-5625
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