PI80650: MEMORY LEAK IN SP132 KEY8 CAUSES OUTOFMEMORY IN LIBERTY

Fixes are available

APAR status

Closed as program error.

Error description

Unauthorized code in bbgzsufm is using thread level heap
caches
which are not cleaned up when a thread ends. This is causing
a
memory leak in SP132 Key8 leading to an OutofMemory
condition in
private storage. Javacore shows:
Dump Event "systhrow" (00040000) Detail
"java/lang/OutOfMemoryError" "Failed to create a thread:
retVal
-1073741830, errno 112 (0x70), errno2 189858450 (0xb510292)"
received

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server Liberty for z/OS                     *
****************************************************************
* PROBLEM DESCRIPTION: Memory leak in Subpool 132 Key 8        *
*                      storage                                 *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Some Liberty features, such as zosRequestLogging-1.0, take
advantage of z/OS callable services that can be invoked by
problem state programs.  In some cases memory used by a task
that uses these features is not freed when the task ends.  In
environments where tasks are created and end frequently, this
can lead to a noticable storage leak in subpool 132 key 8
storage.  The size of the individual storage cells can vary but
is usually 0x400 bytes.

Problem conclusion

Code was added to prevent Liberty from associating subpool 132
key 8 storage with individual tasks.

The fix for this APAR is currently targeted for inclusion in fix
pack 17.0.0.2.  Please refer to the Recommended Updates page for
delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PI80650
Reported component name
LIBERTY PROF -
Reported component ID
5655W6514
Reported release
CD0
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-04-27
Closed date
2017-05-08
Last modified date
2017-05-08

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
LIBERTY PROF -
Fixed component ID
5655W6514

Applicable component levels

RCD0 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"CD0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI80650: MEMORY LEAK IN SP132 KEY8 CAUSES OUTOFMEMORY IN LIBERTY

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

RCD0 PSY

Document Information

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