PK95332: LARGE CHARACTER ARRAYS FROM BODYCONTENTIMPL ARE CONSUMING THE HEAP, CAUSING OUTOFMEMORY.

Fixes are available

APAR status

Closed as program error.

Error description

WebSphere Application Server V6.0 Network Deployment edition
running on Microsoft Windows Server 2003 operating system

A large hashmap referencing large character arrays is consuming
the heap, resulting in OutOfMemory occurrences.  The large
character arrays are referenced by:

org.apache.jasper.runtime.BodyContentImpl

Local fix

Set minimum WebContainer threadpool size equal to the maximum
WebContainer thread pool size.

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server version    *
*                  6.1 and 7.0 users of JavaServer Pages (JSP) *
****************************************************************
* PROBLEM DESCRIPTION: A large tag body can result in a        *
*                      large amount of heap memory being       *
*                      consumed.                               *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The BodyContent buffers of a JSP's tag bodies are reused in
order to optimize the performance.  However, if the size of a
tag body is beyond the default BodyContent buffer size, the
BodyContent buffer is resized to accommodate the tag body but
is not reset to the default size after serving a request.  As
a result, the heap memory that is used by
org.apache.jasper.runtime.BodyContentImpl might be increased
over time.  The default BodyContent buffer size is 512 bytes
which is configurable via a WebContainer custom property
BodyContentBuffSize = <integer>

Problem conclusion

The JSP Container was modified to deallocate any large
BodyContent buffer and create a new one of the default size.
A WebContainer custom property needs to be set to enable this
behavior:

com.ibm.ws.jsp.limitBuffer = true (default is false)

Please refer to the following technote for instructions on
enabling WebContainer custom properties:
http://www.ibm.com/support/docview.wss?rss=180&uid=swg21284395
The fix for this APAR is currently targeted for inclusion in
fixpacks 6.1.0.29 and 7.0.0.9
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
PK95332
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
61W
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-09-02
Closed date
2009-09-25
Last modified date
2010-02-17

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

PM07854

Fix information

Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R61A PSY
UP
R61H PSY
UP
R61I PSY
UP
R61P PSY
UP
R61S PSY
UP
R61W PSY
UP
R61Z PSY
UP
R700 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.1","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
29 December 2021

Tips

PK95332: LARGE CHARACTER ARRAYS FROM BODYCONTENTIMPL ARE CONSUMING THE HEAP, CAUSING OUTOFMEMORY.

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

R61A PSY

R61H PSY

R61I PSY

R61P PSY

R61S PSY

R61W PSY

R61Z PSY

R700 PSY

Document Information

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