PK65936: OUTOFMEMORY LEAK BEANINFOMANAGER INSTANCE IS NOT BEING REMOVED FROM THE HASHMAP

Fixes are available

APAR status

Closed as program error.

Error description

The BeanInfoManager (BeanInfo) instances are holding onto too
much native memory, and can cause a possible leak.
..
Can look for the number of classes cached by
org/apache/taglibs/standard/lang/jstl/BeanInfoManager.
mBeanInfoManagerByClass.
.
They are placed in a static of  array of java/util/Map
.
To calculate, each entry in this array is for an application.
e.g.
the first one at item[7] = 0x4394d860 .
It's key is  com/xxx/xxx/bcrmsweb/forms/ActivityElementListForm
and it's value is a beanInfoManager which further hashes the
methods in this class.
The mPropertyByName is the one caches a lot of
sun/reflect/GeneratedMethodAccessorNNNN.
.
Additional search keywords:
OutOfMemory Out Of Memory

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server V6.1,      *
*                  V8.0, and V8.5 users of Java Server Pages   *
*                  (JSP).                                      *
****************************************************************
* PROBLEM DESCRIPTION: BeanInfoManager instances in the        *
*                      BeanInfoManager static hashmap are      *
*                      not removed when an application is      *
*                      stopped which leads to Classloaders     *
*                      not being garbage collected.            *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
BeanInfoManager keeps a hashmap of the classes it has
instances of. This hashmap is not cleaned up when applications
are stopped which causes it to hold onto references of classes
from applications that have stopped and possibly even
restarted. This prevents the Classloaders which loaded those
classes from being garbage collected.

Problem conclusion

Method was added to BeanInfoManager that removes all the
entries for a given classloader. The JSP code was also updated
to call that method when applications are stopped.

APAR PK65936 is currently targeted for inclusion in Service
Level (Fix Pack) 6.1.0.19, 8.0.0.5 and 8.5.0.1 of WebSphere
Application Server.

The fix will also be delivered as sysrouted APAR PM68439 in
WebSphere Application Server V7.0 for z/OS.

Please refer to URL:
//www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack availability.

Temporary fix

Comments

APAR Information

APAR number
PK65936
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-05-12
Closed date
2008-06-27
Last modified date
2012-09-20

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

PM68439

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R610 PSY UK39151
UP08/09/26 P F809

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"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":"6.1","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
29 December 2021

Tips

PK65936: OUTOFMEMORY LEAK BEANINFOMANAGER INSTANCE IS NOT BEING REMOVED FROM THE HASHMAP

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

R610 PSY UK39151

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

Document Information

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