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PM21181: ABEND SDC2 IN CONTROL REGION DURING STRESS TEST.

Fixes are available

6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for AIX
7.0.0.15: Java SDK 1.6 SR9 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for HP-UX
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for IBM i
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Linux
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Solaris
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Windows
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
7.0.0.17: WebSphere Application Server V7.0 Fix Pack 17
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
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
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
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
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
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

  • During a 300 transaction per second performance test, servant
    region abend EC3, followed by control region abendDC2 SDC2 with
    reason code 4F003F00.
    
    Traceback from failing TCB is:
    bbooorbx(bacb*,BBOO_ORBR_PC_FunctionCodes,...)
                +00000000              BBGBOA
    ORB_Request::~ORB_Request()
                +00000A7C              BBGBOA
    BBO_BOA::return_ORB_request(ORB_Request*)
                +00000074              BBGBOA
    ORB_Request_Registry::cleanupSR_Terminated(MVS::ServantInsta
                +000019C0              BBGBOA
    ACR_ExecutionThread::ProcessSrCleanup(acrwObj*)
                +000001B0              BBGBOA
    ACR_ExecutionThread::RemoveAndProcessWork(ThreadCleanUp*)
                +00001CD8              BBGBOA
    ACR_ExecutionRoutine
                +0000080C              BBGBOA
    CELQPCMM    +00000F56              CELQLIB
    
    Server is running in 64 bit mode.
    

Local fix

  • If the size of the message causing the SDC2 ABEND is
    significantly less than 1 megabyte, the WebSphere runtime can
    be tuned so that these messages will be stored below the bar
    instead of above the bar.  Contact Level 2 for assistance.
                                                    (z page)
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V6.1.0                               *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABENDDC2/ABENDSDC2 reason code 4F003F20 *
    *                      was received in a WebSphere             *
    *                      Application Server for z/OS controller. *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A server running in 64 bit mode required above the bar
    storage to represent pieces of the native construct for a
    Request (ORB_Request).  On z/OS the IARV64 service is used for
    obtaining above the bar storage.  The default ownership of the
    storage is assigned to the current task.  If the owning task
    terminates the storage will be freed.
    
    There were 1-way requests being driven by DRS from the
    controller on threads that could terminate prior to the request
    completing its dispatch in the server's servants.  The storage
    obtained above the bar was freed as part of the cleanup for the
    task termination.  This caused the DC2 ABENDs as well as 0C4
    ABENDs (in the servant) during the subsequent processing of the
    request.
    

Problem conclusion

  • Code was added to the storage management code of the native
    request (bbooorsx.mac) to assign the ownership of the obtained
    storage to the main task.
    
    APAR PM21181 is currently targeted for inclusion in
    Service Level (Fix Pack) 6.1.0.35 of WebSphere Application
    Server V6.1.
    
    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

    PM21181

  • 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

    2010-08-25

  • Closed date

    2010-09-10

  • Last modified date

    2011-01-04

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

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

    PM21286

Fix information

  • Fixed component name

    WEBSPHERE FOR Z

  • Fixed component ID

    5655I3500

Applicable component levels

  • R610 PSY UK62676

       UP10/12/17 P F012

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 #: PM21181

Modified date: 04 January 2011