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PM66458: WOCSLA INCORRECTLY REMOVING WAITERS FROM THE WAITER LIST, CAUSESCICS ABEND REPORTING BBOATRUE ABEND 12/08/28 PTF PECHANGE

Fixes are available

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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APAR status

  • Closed as program error.

Error description

  • We maintain a list of 'waiters' in our WOLA registration (RGE)
    control block.  The code in error is in bbgasrvq.plx, in
    Process_FreeWaiter, around line 1668.  The code which removes
    elements from the waiter list is incorrect.  It causes us to try
    to update storage off of location 0 when there are two elements
    in the waiter list, which results in an 0C4 abend in WebSphere.
    
    The CICS abend is cause by the TALENGTH for BBOATRUE, it is
    only 4096 in WAS v7.  In WAS v8 it was increased to 8192 when we
    shipped BBOATRUX, but this was not changed when BBOATRUX was
    rolled back to v7.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of WebSphere Optimized Local      *
    *                  Adapters (WOLA) on IBM WebSphere            *
    *                  Application Server for z/OS V7.0, V8.8,     *
    *                  and V8.5                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: An ABEND0C4/ABENDS0C4 occurs in the     *
    *                      WebSphere Application Server for z/OS   *
    *                      controller region when processing       *
    *                      OLA requests.  When communicating with  *
    *                      CICS Transaction Server, a CICS task    *
    *                      may take a CICS AKEB abend.             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When processing concurrent OLA requests from a WebSphere
    Application Server for z/OS server instance to a CICS
    Transaction Server instance, the WebSphere OLA Task Related
    User Exit (TRUE) may write over the end of its local work
    area (UEPTAL).  This results in CICS taking an AKEB abend.
    The resulting recovery code which runs in the WebSphere
    Application Server for z/OS controller region may result in
    the controller region taking an ABEND0C4/ABENDS0C4 while
    removing the failed request from a data structure.  The
    ABEND0C4 may occur when communicating with external address
    spaces other than CICS Transaction Server.
    

Problem conclusion

  • Code was added to correct the size of the allocated local work
    area in the WebSphere OLA Task Related User Exit (TRUE), and
    to correctly remove requests from the request queue.
    
    APAR PM66458 is currently targeted for inclusion in WebSphere
    Application Server Fix Packs 7.0.0.25, 8.0.0.5, and 8.5.0.1.
    
    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

    PM66458

  • Reported component name

    WEBSPHERE FOR Z

  • Reported component ID

    5655I3500

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-08

  • Closed date

    2012-07-11

  • Last modified date

    2013-04-05

  • 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 FOR Z

  • Fixed component ID

    5655I3500

Applicable component levels

  • R700 PSY UK81738

       UP12/10/04 P F210

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.

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Document Information

Modified date:
29 October 2021