IBM Support

PM89479;7.0.0.29: classloader leak when application is restarted using a metadatagenerator

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Abstract

An application classloader leak occurs when an application is stopped that includes a cachespec.xml with a metadatagenerator.

Download Description

PM89479 resolves the following problem:

ERROR DESCRIPTION:
Classloader leak when an application is restarted that
contains a cachespec.xml with a metadatagenerator.

LOCAL FIX:
None

PROBLEM SUMMARY

USERS AFFECTED:
All users of IBM WebSphere Application
Server using a metadatagenerator in the
cachespec.xml.

PROBLEM DESCRIPTION:
An application classloader leak occurs
when an application is stopped that
includes a cachespec.xml with a
metadatagenerator.

RECOMMENDATION:
None

The cachespec.xml is represented in dynacache by Java objects.
When an application is stopped the Java objects are
unreferenced so they become available for garbage collection.
A reference to the metadatagenerator remains when an
application is stopped and results in the application
classloader leak.

PROBLEM CONCLUSION:
The reference to the metadatagenerator will be nulled so the
application classloader is released.

The fix for this APAR is currently targeted for inclusion in
fix packs 7.0.0.31, 8.0.0.8, and 8.5.5.2. Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Prerequisites

None

Installation Instructions

Please review the readme.txt for detailed installation instructions.

[{"INLabel":"Readme","INLang":"US English","INSize":"6097","INURL":"ftp://public.dhe.ibm.com/software/websphere/appserv/support/fixes/PM89479/7.0.0.29/readme.txt"}]
On
[{"DNLabel":"7.0.0.29-WS-WAS-IFPM89479","DNDate":"17 Dec 2013","DNLang":"US English","DNSize":"31720","DNPlat":{"label":"AIX","code":"PF002"},"DNURL":"http://www.ibm.com/support/fixcentral/quickorder?fixids=7.0.0.29-WS-WAS-IFPM89479&product=ibm%2FWebSphere%2FWebSphere+Application+Server&source=dbluesearch","DNURL_FTP":"ftp://public.dhe.ibm.com/software/websphere/appserv/support/fixes/PM89479/7.0.0.29/7.0.0.29-WS-WAS-IFPM89479.pak","DDURL":null}]

Technical Support

Contact IBM Support using SR (http://www.ibm.com/software/support/probsub.html), visit the WebSphere Application Server support web site (http://www.ibm.com/software/webservers/appserv/was/support/), or contact 1-800-IBM-SERV (U.S. only).

[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Dynamic Cache","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"7.0.0.29","Edition":"Base;Network Deployment","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
15 June 2018

UID

swg24036742