JR51294: LOADING A PROCESS INSTANCE DIAGRAM IN IBM PROCESS PORTAL MIGHT CAUSE A HUNG THREAD AND DEPLETION OF HEAP MEMORY

7.5.1.2-WS-BPM-IFJR51294
7.5.1.0-WS-BPM-IFJR51294
Version 8.5 Refresh Pack 6 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• When you try to view a process instance diagram in IBM Process
  Portal, the Java Virtual Machine (JVM) in the IBM Business
  Process Manager (BPM) server that is responsible for retrieving
  the diagram (stand-alone server JVM or AppTarget cluster JVM)
  might encounter a hung thread and high heap memory use (and
  possibly, an OutOfMemory error). As a result, rendering the
  diagram might be slow. This issue is more likely if there is a
  high number of process instances on the server.
  
  PRODUCTS AFFECTED:
  IBM Business Process Manager (BPM) Advanced
  IBM BPM Standard
  IBM BPM Express
  

Local fix

Problem summary

• The logic for determining whether you are authorized to view the
   diagram for the process instance is inefficient, retrieving all
   process instances which you are authorized to view (by using a
  database query) as an intermediate step.  If you are authorized
  to view a large number of process instances, this might use a
  large amount of memory and cost excessive time by the thread
  (making it at least appear to be hung).
  

Problem conclusion

• A fix for IBM BPM V7.5.1.0 and V7.5.1.2 is available that
  improves the efficiency of the instance authorization logic,
  eliminating the retrieval of all process instances you are
  authorized to view.
  
  On Fix Central (http://www.ibm.com/support/fixcentral), search
  for JR51294:
  
  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 JR51294, 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 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 ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels

• R751 PSY

     UP