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JR51774: IBM BPM PROCESS SERVER USES A LOT OF CPU WHEN RUNNING JAVASCRIPT

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • You notice that running an IBM Business Process Manager (BPM)
    process uses a lot of CPU and sometimes the system hangs. In a
    Java core dump, the Java callstack might look similar to the
    following callstack:
    
    at java/util/HashMap.findNonNullKeyEntry(HashMap.
      java:601(CompiledCode))
    at java/util/HashMap.getEntry(HashMap.java:585(CompiledCode))
    at java/util/HashMap.get(HashMap.java:571(Compiled Code))
    at org/mozilla/javascript/JavaMembers.lookupClass
      (JavaMembers.java:833(Compiled Code))
    at org/mozilla/javascript/NativeJavaObject.initMembers
      (NativeJavaObject.java:90(Compiled Code))
    at org/mozilla/javascript/NativeJavaObject.<init>
      (NativeJavaObject.java:80(Compiled Code))
    at org/mozilla/javascript/NativeJavaObject.<init>
      (NativeJavaObject.java:70(Compiled Code))
    at org/mozilla/javascript/WrapFactory.wrapAsJavaObject
      (WrapFactory.java:149(Compiled Code))
    at org/mozilla/javascript/WrapFactory.wrap(WrapFactory.
      java:105(Compiled Code))
    at org/mozilla/javascript/NativeJavaMethod.call
      (NativeJavaMethod.java:258(Compiled Code))
    at org/mozilla/javascript/Interpreter.interpretLoop
      (Interpreter.java:3330(Compiled Code))
    at org/mozilla/javascript/Interpreter.interpret
      (Interpreter.java:2487(Compiled Code))
    at org/mozilla/javascript/InterpretedFunction.call
      (InterpretedFunction.java:164(Compiled Code))
    at org/mozilla/javascript/ContextFactory.doTopCall
      (ContextFactory.java:398(Compiled Code))
    at org/mozilla/javascript/ScriptRuntime.doTopCall
      (ScriptRuntime.java:3070(Compiled Code))
    at org/mozilla/javascript/InterpretedFunction.exec
      (InterpretedFunction.java:175(Compiled Code))
    at com/lombardisoftware/core/script/js/JSScript.exec
      (JSScript.java:60(Compiled Code))
    
    .----------------------------------------------------
       Another possible symptom are hung threads (WSVR0605W) with
    the following java stack.
    .
    [10/22/14 16:05:42:467 EDT] 0000008e ThreadMonitor W
    WSVR0605W: Thread
     "WorkManager.bpm-em-workmanager : 14143" (00008332) has been
    active for
     668295 milliseconds and may be hung.  There is/are 2 thread(s)
    in total
     in the server that may be hung.
     at
    org.mozilla.javascript.NativeJavaPackage.getPkgProperty(NativeJa
    vaPackage.java)
     at
    org.mozilla.javascript.NativeJavaPackage.get(NativeJavaPackage.j
    ava:114)
     at
    org.mozilla.javascript.ScriptableObject.getProperty(ScriptableOb
    ject.java:1617)
     at
    org.mozilla.javascript.ScriptRuntime.getObjectProp(ScriptRuntime
    .java:1437)
     at
    org.mozilla.javascript.ScriptRuntime.getObjectProp(ScriptRuntime
    .java:1423)
     at
    org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.jav
    a:3027)
     at
    org.mozilla.javascript.Interpreter.interpret(Interpreter.java:24
    87)
     at
    org.mozilla.javascript.InterpretedFunction.call(InterpretedFunct
    ion.java:164)
    
    
    or this java stack
    
    [10/22/14 16:05:42:466 EDT] 0000008e ThreadMonitor W
    WSVR0605W: Thread
    "WorkManager.bpm-em-workmanager : 14148" (00008338) has been
    active for
    668295 milliseconds and may be hung.  There is/are 1 thread(s)
    in total
    in the server that may be hung.
        at java.util.HashMap.findNonNullKeyEntry(HashMap.java:601)
        at java.util.HashMap.getEntry(HashMap.java:585)
        at java.util.HashMap.get(HashMap.java:571)
        at
    org.mozilla.javascript.JavaMembers.lookupClass(JavaMembers.java:
    833)
        at
    org.mozilla.javascript.NativeJavaClass.initMembers(NativeJavaCla
    ss.java:84)
        at
    org.mozilla.javascript.NativeJavaClass.<init>(NativeJavaClass.ja
    va:78)
        at
    org.mozilla.javascript.NativeJavaPackage.getPkgProperty(NativeJa
    vaPackag
    e.java:164)
        at
    org.mozilla.javascript.NativeJavaPackage.get(NativeJavaPackage.j
    ava:114)
        at
    org.mozilla.javascript.ScriptableObject.getProperty(ScriptableOb
    ject.java:1617)
        at
    org.mozilla.javascript.ScriptRuntime.getObjectProp(ScriptRuntime
    .java:1437)
        at
    org.mozilla.javascript.ScriptRuntime.getObjectProp(ScriptRuntime
    .java:1423)
        at
    org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.jav
    a:3027)
        at
    org.mozilla.javascript.Interpreter.interpret(Interpreter.java:24
    87)
        at
    org.mozilla.javascript.InterpretedFunction.call(InterpretedFunct
    ion.java:164)
    

Local fix

Problem summary

  • This issue occurs because the Rhino JavaScript engine uses an
    implementation that is not thread safe, which is fixed with
    Rhino 1.7R3. This Rhino fix is now included in the Rhino
    implementation that IBM BPM uses. For more information, visit
    Rhino Github and search for the bug fix number 738388.
    

Problem conclusion

  • A fix is/will be available for IBM BPM  that contains the
    changes that were implemented with the official Rhino fix (bug
    fix number 738388).
    
    On Fix Central (http://www.ibm.com/support/fixcentral), search
    for JR51774:
    
    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 JR51774, 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

    JR51774

  • Reported component name

    BPM STANDARD

  • Reported component ID

    5725C9500

  • Reported release

    801

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2014-11-17

  • Closed date

    2015-01-19

  • Last modified date

    2015-10-23

  • 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

  • R801 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFTDH","label":"IBM Business Process Manager Standard"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.1","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
23 October 2015