JR54223: IN IBM PROCESS PORTAL, A STACKOVERFLOW ERROR MIGHT OCCUR WHEN YOU VIEW PROCESS INSTANCE DETAILS IN PROCESS PERFORMANCE

8.5.5.0-WS-BPM-IFJR54223
Version 8.5 Refresh Pack 7 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• In IBM Process Portal, when you click a process instance in the
  Processes tab (to view the business process diagram for the
  instance in the Process Performance dashboard) or you click a
  process in the Process Performance dashboard (to view details of
   the process), a StackOverflow error might occur. This error is
  displayed in Process Portal and in the SystemOut.log file. The
  stack trace looks  similar to the following stack trace:
  
  [9/1/15 16:36:36:736 CDT] 000001f5 wle           E
  CWLLG2229E: An exception occurred in an EJB call.  Error: null
  java.lang.StackOverflowError
  ...
   at
   com.lombardisoftware.core.script.js.Utilities.getExternalDiagra
  m(Utilities.java:2793)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findExternalP
  rocesses(ProcessHistoricalStatistics.java:700)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findTaskActiv
  ities(ProcessHistoricalStatistics.java:681)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findExternalP
  rocesses(ProcessHistoricalStatistics.java:706)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findTaskActiv
  ities(ProcessHistoricalStatistics.java:681)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findExternalP
  rocesses(ProcessHistoricalStatistics.java:706)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findTaskActiv
  ities(ProcessHistoricalStatistics.java:681)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findExternalP
  rocesses(ProcessHistoricalStatistics.java:706)
   at
   com.ibm.bpm.script.js.ProcessHistoricalStatistics.findTaskActiv
  ities(ProcessHistoricalStatistics.java:681)
  ...
  
  The significant characteristic of the stack trace is that the
  findExternalProcesses and findTaskActivities methods, as
  previously illustrated, appear alternating many times.
  
     The following error is also logged as a result.
  [12/14/15 12:52:09:963 EST] 0000013d JavaScriptRun E
  CWLLG2015E:  An unexpected runtime exception occurred. See
  exception for more details.
  Error: JavaException:
  com.lombardisoftware.client.persistence.common.BrokenReferenceEx
  ception:
  Business Process Diagram with ID
  BPD.cb42ebbe-5123-44d7-987d-45d1f95c421c not found.
  (<JSScript>#72).
  
  org.mozilla.javascript.JavaScriptException: JavaException:
  com.lombardisoftware.client.persistence.common.BrokenReferenceEx
  ception:
  Business Process Diagram with ID
  BPD.cb42ebbe-5123-44d7-987d-45d1f95c421c not found.
  (<JSScript>#72)
   at
  org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.jav
  a:2690)
   at
  org.mozilla.javascript.Interpreter.interpret(Interpreter.java:24
  87)
   at
  org.mozilla.javascript.InterpretedFunction.call(InterpretedFunct
  ion.java:164)
   at
  org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.j
  ava:398)
   at
  com.lombardisoftware.core.script.JavaScriptContextFactory.doTopC
  all(JavaScriptContextFactory.java:192)
   at
  org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.jav
  a:3070)
   at
  org.mozilla.javascript.InterpretedFunction.exec(InterpretedFunct
  ion.java:175)
   at
  com.lombardisoftware.core.script.js.JSScript.exec(JSScript.java:
  78)
  
  
  PRODUCTS AFFECTED:
  IBM Business Process Manager (BPM) Advanced
  IBM BPM Standard
  IBM BPM Express
  

Local fix

• 1) Disable projected path calculation for a specific BPD via a
  checkbox in Process Designer.  This requires redeploying the
  BPD.
  
  2) Based on
  http://www.ibm.com/support/knowledgecenter/SSFPJS_.5.6/com.ibm.w
  bpm.wle.widget.doc/topics/cport_gettingstarted_instance.html,
  assign action policy ACTION_VIEW_CRITICAL_PATH to only a group
  that does not exist, so that no user can view projected path
  information, preventing critical path calculation for all BPDs.
  
  3) Limit the projected path calculation time and possibility of
  stack overflow by setting the property documented in
  http://www-01.ibm.com/support/knowledgecenter/SSFPJS_8.5.6/com.i
  bm.wbpm.admin.doc/topics/tadm_portal_configprojectedpath.html
  for all BPDs.  Lower this value from its default value of 20
  seconds to a smaller value.
  

Problem summary

• Logic that calculates historical data for a process instance can
  enter a deep recursion loop because as it traverses the
  instance's business process diagram, which can include nested
  subprocesses and linked processes. As a result, the logic might
  fail to mark a diagram as having been visited, causing repeated
  traversals of previously visited diagrams. Eventually this
  recursion loop can result in a StackOverflow error.
  

Problem conclusion

• A fix is available for IBM BPM V8.5.5.0 that ensures that
  diagrams for subprocesses and linked processes inside a process
  instance's business process diagram are not visited more than
  once, preventing a recursion loop and StackOverflow error.
  
  On Fix Central (http://www.ibm.com/support/fixcentral), search
  for JR54223.
  
   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 JR54223, 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

• R855 PSY

     UP