IBM Support

PH06774: CONCURRENTMODIFICATIONEXCEPTION FROM REFERENCECONTEXT STARTING WEB APPLICATION

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APAR status

  • Closed as program error.

Error description

  • ConcurrentModificationException from ReferenceContext starting
    web application
    
    Caused by: java.util.ConcurrentModificationException
    at java.util.HashMap$HashIterator.nextNode(HashMap.java:1448)
    at java.util.HashMap$KeyIterator.next(HashMap.java:1472)
    at
    java.util.AbstractCollection.addAll(AbstractCollection.java:354)
    at java.util.HashSet.(HashSet.java:130)
    at
    com.ibm.ws.injectionengine.ReferenceContextImpl.getProcessedInje
    ctionClasses(ReferenceContextImpl.java:1080)
    at
    com.ibm.ws.cdi.impl.weld.injection.WebSphereInjectionServicesImp
    l.addReferenceContext(WebSphereInjectionServicesImpl.java:101)
    .....
    at
    com.ibm.ws.cdi.impl.weld.injection.WebSphereInjectionServicesImp
    l.aroundInject(WebSphereInjectionServicesImpl.java:316)
    .....
    at
    com.ibm.ws.cdi.impl.managedobject.CDIManagedObject.cdiInjection(
    CDIManagedObject.java:202)
    .....
    at
    com.ibm.wsspi.webcontainer.annotation.AnnotationHelper.inject(An
    notationHelper.java:106)
    at
    com.ibm.ws.jsf.cdi.WASCDIAnnotationInjectionProvider.inject(WASC
    DIAnnotationInjectionProvider.java:70)
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server web applications                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: Web applications with resource          *
    *                      injection intermittently fail to        *
    *                      start with                              *
    *                      ConcurrentModificationException         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Web applications with resource injection (@Resource) may fail
    to start with a ConcurrentModificationException from
    ReferenceContextImpl.
    This is a very intermittent problem that occurs when the
    server is processing resource injection for dynamic web
    modules.
    

Problem conclusion

  • WebSphere resource injection processing has been updated to
    properly handle the concurrency of dynamic web modules. The
    ConcurrentModificationException will no longer occur and the
    web application will start successfully.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 9.0.0.11.  Please refer to the Recommended Updates
    page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH06774

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-01-02

  • Closed date

    2019-01-31

  • Last modified date

    2019-01-31

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels



Document information

More support for: WebSphere Application Server
General

Software version: 900

Reference #: PH06774

Modified date: 31 January 2019