OA42088: ABEND 0C4 IN ISTAUCTM

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Abend 0C4 in ISTAUCTM in segment SET
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All using Enterprise Extender connections.                   *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * ABEND0C4 occurs in ISTAUCTM                                  *
    * while processing an EE liveness                              *
    * timer SET invocation.                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply PTF.                                                   *
    ****************************************************************
    The problem is summarized as follows:
    
    1) The EE timer processing module, ISTAUCTM, was dispatched
    and scheduled lines for liveness processing.
    2) Each line dispatched and sent a Test LDLC command to
    the partner.  The liveness (TL) timer is cancelled and
    the retry (T1) timer is set.
    3) No responses from the EE partners arrive before the
    EE timer module runs again (approximately 500 ms later).
    4) ISTAUCTM was dispatched again, and removed all of the
    liveness timers that were cancelled from the liveness
    queue.
    5) Subsequently, a new liveness timer was being set for
    a new connection.
    6) An ABEND0C4 occurs in the SET routine of module
    ISTAUCTM.  This occurs because the next liveness (HTMBK)
    to process on the liveness queue has an unexpected NULL
    (previous) timer chain pointer.
    

Problem conclusion

  • ISTAUCTM - The SET routine has been corrected to handle
                       this timing scenario.
    ISTAUCLA - Included for maintenance purposes only.
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    OA42088

  • Reported component name

    VTAM V4 MVS/ESA

  • Reported component ID

    569511701

  • Reported release

    210

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-04-25

  • Closed date

    2013-05-22

  • Last modified date

    2014-07-15

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

    OA41783

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

    UA69203

Modules/Macros

  • ISTAUCLA ISTAUCTM
    

Fix information

  • Fixed component name

    VTAM V4 MVS/ESA

  • Fixed component ID

    569511701

Applicable component levels

  • R210 PSY UA69203

       UP13/06/25 P F306

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


More support for:

z/OS family

Software version:

210

Operating system(s):

z/OS

Reference #:

OA42088

Modified date:

2014-07-15

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