Fixes are available
APAR status
Closed as program error.
Error description
There is a memory leak in the com.ibm.wbimonitor.router.scalable.distribution.MMRoutingClassLo ader plugin. This memory leak manifests itself on a server (WebSphere Application Server, WebSphere Process Server, or Business Process Manager) hosting CEI, where this plugin is installed for event routing to IBM Business Monitor. It can result in system crashes due to JVM heap memory exhaustion.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of IBM Business Monitor Version * * 7.5.1. * **************************************************************** * PROBLEM DESCRIPTION: There is a memory leak in the * * com.ibm.wbimonitor.router.scalable.dist * * ribution.MMRoutingClassLoader plugin. * * This memory leak manifests itself on * * a server (WebSphere Application * * Server, WebSphere Process Server, or * * Business Process Manager) hosting * * CEI, where this plugin is installed * * for event routing to IBM Business * * Monitor. It can result in system * * crashes due to JVM heap memory * * exhaustion. * **************************************************************** * RECOMMENDATION: * **************************************************************** Java class loaders are created and cached by the plugin on a per monitor model, per thread basis, causing an excessive amount of heap memory to be used.
Problem conclusion
Changing the caching algorithm to be per monitor model, per JVM (using a "weak hash map" keyed on a specific instance of a common key) significantly reduces heap memory usage. An interim fix for IBM Business Monitor Version 7.5.1.0 has been published to Fix Central. Please refer to the separate file that is automatically downloaded with the interim fix for prerequisite information and installation/uninstallation instructions.
Temporary fix
Comments
APAR Information
APAR number
JR45468
Reported component name
WEB BUS MONITOR
Reported component ID
5724M2400
Reported release
751
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-01-18
Closed date
2013-04-29
Last modified date
2013-04-29
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
WEB BUS MONITOR
Fixed component ID
5724M2400
Applicable component levels
R750 PSY
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSSRR3","label":"WebSphere Business Monitor"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"751","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
17 October 2021