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PM53759: ClassNotFoundException on XMemConnectionContext when FFDC is invoked.

Fixes are available

8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
8.5.0.1: WebSphere Application Server V8.5 Fix Pack 1
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Session Initiation Protocol (SIP) component invoking FFDC can
    sometimes result in a NoClassDefFoundError caused by a
    ClassNotFoundException on
    com.ibm.ws390.channel.common.XMemConnectionContext such as
    
    Caused by: java.lang.ClassNotFoundException:
    com.ibm.ws390.channel.common.XMemConnectionContext
     at
    org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(
    BundleLoader.java:402)
     at
    org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(
    BundleLoader.java:347)
     at
    org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadCla
    ss(DefaultClassLoader.java:83)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
     ... 32 more
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V7.0 and V8.0 using FFDC             *
    ****************************************************************
    * PROBLEM DESCRIPTION: A SIP component invoking FFDC might     *
    *                      sometimes encounter a NoClassDefFound   *
    *                      (caused by a ClassNotFoundException)    *
    *                      on the class                            *
    *                      com.ibm.ws390.channel.common.XMemConnec *
    *                      tionContext as this class is            *
    *                      only available in z/OS modules.         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The default introspection level for FFDC is 3.  When FFDC is
    invoked by a component, the default formatter will perform
    introspection into 3 levels.  In this case, one of the
    uninstantiated fields(XMemConnectionContext) within the 3
    levels of the object provided to FFDC is only available on
    z/OS, so it can not be introspected and results in a
    ClassNotFoundException.
    

Problem conclusion

  • The default formatter has been updated to handle this
    condition such that the ClassNotFoundException is reported to
    FFDC and allows the intended FFDC reported by the component to
    continue to be logged.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 7.0.0.25 and 8.0.0.4.  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

    PM53759

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-12-06

  • Closed date

    2012-04-13

  • Last modified date

    2012-04-13

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R700 PSY

       UP

  • R800 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM53759

Modified date: 13 April 2012