PM18827: HIGH CPU IN JAVA/UTIL/JAR/JARFILE.GETENTRY WHN IDLE

Fixes are available

APAR status

Closed as program error.

Error description

Customer has a very big cell. When the cell was idle, customer
saw very high in CPU usage. After taking the dumps we saw a lot
of CPU spent in java/util/jar/JarFile.getEntry. The problem is
javax/xml/parsers/DocumentBuilderFactory.newInstance being
called so frequently.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V6.1.0                               *
****************************************************************
* PROBLEM DESCRIPTION: High CPU usage on an idle system.       *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
A customer with a very large cell noticed high CPU usage when
the system was idle. Dumps showed that
javax/xml/parsers/DocumentBuilderFactory.newInstance in
SOAP-related code was being called frequently.

Problem conclusion

SOAP code was modified to cache and reuse DocumentBuilder
rather than frequently creating a new one.

APAR PM18827 is currently targeted for inclusion in Service
Level (Fix Pack) 6.1.0.35 of WebSphere Application Server V6.1.

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
PM18827
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
2010-07-20
Closed date
2010-08-04
Last modified date
2011-01-04

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

PM23611

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R610 PSY UK62676
UP10/12/17 P F012

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":"BU053","label":"Cloud & Data Platform"},"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:
25 October 2021

Tips

PM18827: HIGH CPU IN JAVA/UTIL/JAR/JARFILE.GETENTRY WHN IDLE

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 UK62676

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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