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MF50972 - LIC-OTHER-LOOP MACH POOL STORAGE EXHAUSTED WHEN PEX ACTIVE

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PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-OTHER-LOOP MACH POOL STORAGE EXHAUSTED WHEN PEX ACTIVE


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

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Code', the terms of which were provided in a printed document that was
delivered with the machine.

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REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
When an error is set to be filtered in Licensed Internal Code
(LIC) logging, a VLOGFILTER task starts to be created. During
the task creation, Performance Data Collector encountered an
error requiring a LIC log to be generated, and subsequently
filtered. Again, the filter requires a VLOGFILTER to exist.
Since the original VLOGFILTER task did not complete an attempt
is made to create new task which encounters the same error. This
series of events continues, meanwhile allocating Machine Pool
storage, until Machine Pool storage can no longer be allocated.
Many other critical functions, that rely on Machine Pool
storage, can no longer function. The system becomes
non-responsive at that point.

CORRECTION FOR APAR MA39877 :
-----------------------------
The Performance Data Collector (Pdc) is hooked in the
task/process create path. This is how Pdc adds tasks/processes
to PEX collections when they are created while a collection is
active. Pdc encountered an error attempting to add the
VLOGFILTER task a the collection. The LIC code is changed to
correct the error on the call to Pdc to add a task/process to a
collection.

CIRCUMVENTION FOR APAR MA39877 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
     NONE

Summary Information

System..............................i
Models..............................
Release.............................V7R1M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA39877
Superseded by:......................View fix details for PTF MF58971
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C1116710


System i Support

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Document Information

Modified date:
13 August 2010