Direct links to fixes
APAR status
Closed as program error.
Error description
If you select ?Automatically flow to next task? in the user task activities of your business process definitions (BPDs) , you might experience heap growth and possibly java.lang.OutOfMemoryErrors. A heap dump shows that a large percentage of the heap is occupied by TaskSummaryResolver objects nested in a hash map in ExecutionContextRegistry, and the heap layout is similar to the following layout: Class Name | Retained Heap | ---------------------------------------------------------------- class com.lombardisoftware.component.common.workflow. ExecutionContextRegistry | 2,152,915,864 | |- java.util.HashMap | 2,152,915,600 | | '- java.util.HashMap$Entry[8192] | 2,152,915,552 | | |- java.util.HashMap$Entry | 2,853,856 | | | |- java.util.HashMap$Entry | 2,052,344 | | | |- com.lombardisoftware.server.core. TaskSummaryResolver | 801,488 | | | '- Total: 2 entries | | | |- java.util.HashMap$Entry | 2,767,544 | | | |- java.util.HashMap$Entry | 1,687,384 | | | |- com.lombardisoftware.server.core. TaskSummaryResolver | 1,080,136 | | | '- Total: 2 entries | | | | ... ----------------------------------------------------------------
Local fix
Problem summary
When IBM BPM runs activities that automatically flow to the next task, it creates a separate thread for each activity to perform the next steps following the completion of the activity. This special thread uses a java.lang.ThreadLocal variable that is not correctly freed when the thread ends. With each run of an activity that automatically flows to the next task, a data structure remains in the ThreadLocal variable that increases the used heap size.
Problem conclusion
A fix is available for IBM BPM that frees the ThreadLocal variable when the thread is complete. On Fix Central (http://www.ibm.com/support/fixcentral), search for JR52648 1. Select IBM Business Process Manager with your edition from the product selector, the installed version to the fix pack level, and your platform, and then click Continue. 2. Select APAR or SPR, enter JR52648, and click Continue. When you download fix packages, ensure that you also download the readme file for each fix. Review each readme file for additional installation instructions and information about the fix.
Temporary fix
Not applicable
Comments
APAR Information
APAR number
JR52648
Reported component name
BPM STANDARD
Reported component ID
5725C9500
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-02-26
Closed date
2015-04-17
Last modified date
2015-04-17
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
BPM STANDARD
Fixed component ID
5725C9500
Applicable component levels
R850 PSY
UP
R855 PSY
UP
R856 PSY
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFTDH","label":"IBM Business Process Manager Standard"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
14 October 2021