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PM54414: OUTOFMEMORY CAUSED BY CCL LEAK IN ORB Z/OS BECAUSE OF RESIDUE REFERENCES IN COM/IBM/EJS/CONTAINER/UTIL/BYTEARRAY

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
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
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
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server
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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APAR status

  • Closed as program error.

Error description

  • Customer experienced java.lang.OutOfMemoryError in native
    storage. The following is the reference chain
    
    0x39da51e8 com/ibm/ws/classloader/CompoundClassLoader
    
     0x39e0c6d0 com/ibm/ejs/container/BeanMetaData
      0x38c87e80 com/ibm/ejs/container/EJBMethodInfoImpl
       0x39e1d9f0 ■Lcom/ibm/ejs/container/EJBMethodInfoImpl;
        0x39e0d930 com/ibm/websphere/startupservice/EJSRemoteStatele
                   ssCWBSCCStartupBean_3f303fc8
         0x39dcf6b8 com/ibm/ejs/container/EJSWrapperCommon
          0x39e0b590 com/ibm/websphere/startupservice/EJSStatelessCW
                     BSCCStartupBeanHomeBean_3f303fc8
           0x39e1c660 com/ibm/ejs/container/BeanId
            0x39e0d910 com/ibm/ejs/container/util/ByteArray
             0x38c8aa88 com/ibm/ws390/orb/ClientDelegate
              0x4193d428 com/ibm/websphere/startupservice/_EJSRemote
                         StatelessCWBSCCStartupBean_3f303fc8_Tie
               0x4193d3e8 com/ibm/websphere/startupservice/EJSRemote
                          StatelessCWBSCCStartupBean_3f303fc8
                0x41933880 com/ibm/ejs/container/EJSWrapperCommon
                 0x39db50c8 [Lcom/ibm/ejs/container/EJSWrapperCommon
                            ;
                  0x3645d6c0 com/ibm/ejs/util/cache/WrapperBucket
                   0x36480278 ■Lcom/ibm/ejs/util/cache/Bucket;
                    0x36419128 com/ibm/ejs/util/cache/Cache
    
    The com/ibm/ejs/container/util/ByteArray referenced by
    com/ibm/ws390/orb/ClientDelegate was not cleared causing residue
    reference to old objects belongs to stopped CCL.
    

Local fix

  • CCL leak triggered by restarting application. Preventing
    application restart may bypass the problem.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V6.1 and V8.0                        *
    ****************************************************************
    * PROBLEM DESCRIPTION: WebSphere Application Server for z/OS   *
    *                      Servant Region caused a classloader     *
    *                      leak when the application restarts.     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When an application is restarted, stale references to the
    classloader for the previous instance of the application are
    maintained, causing a classloader leak in the Servant
    address space.
    

Problem conclusion

  • Code was updated so that when the application is restarted,
    stale references to the classloader for the previous
    instance of the application are removed.
    
    APAR PM54414 is currently targeted for inclusion in Service
    Level (Fix Pack) 6.1.0.45 of WebSphere Application Server V6.1
    and Fix Pack 8.0.0.4 of WebSphere Application Server V8.0.
    
    The fix will also be delivered as sysrouted APAR PM60815 in
    WebSphere Application Server V7.0 Fix Pack 7.0.0.25.
    
    Please refer to URL:
    //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
    for Fix Pack availability.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM54414

  • Reported component name

    WEBSPHERE FOR Z

  • Reported component ID

    5655I3500

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-12-14

  • Closed date

    2012-03-20

  • Last modified date

    2012-10-16

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PM60815

Fix information

  • Fixed component name

    WEBSPHERE FOR Z

  • Fixed component ID

    5655I3500

Applicable component levels

  • R610 PSY UK81646

       UP12/09/23 P F209

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



Document information

More support for: WebSphere Application Server for z/OS
General

Software version: 6.1

Reference #: PM54414

Modified date: 16 October 2012