OA41033: ABEND0C4 PIC4 ISTTSCAR HVT61C0 +1CA8 NUCLEUS IOSVIRBA

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as unreproducible in next release.

Error description

  • Abend in ISTTSCAR occurs in UNLOCK routine when called from
    segment SENDDLC when running disabled after FINDNCB routine
    returns an LUCB pointer rather than an NCB pointer. SENDDLC
    neglects to set the HNTEPTR needed for latch processing in
    UNLOCK routine in this case.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of VTAM RTP connections.           *
    *                                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND0C4 in ISTTSCAR due to HNTEPTR=0   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The problem may be summarized as follows:
    1. A two (or more) hop HPR connection is established.
    2. At one of the ANR nodes, the NCB that represents the
       next hop DLC connection is freed and the element
       address is reused for an application.
    3. When an NLP next arrives at the ANR node,
       ISTTSCAR finds an LUCB instead of an NCB
       and when it tries to free the CIDCTL lock,
       the ABEND0C4 occurs because HNTEPTR had not
       been set.
    

Problem conclusion

Temporary fix

Comments

  • ISTTSCAR has been updated to set HNTEPTR even if the
    control block found is an LUCB.
    
    ISTRPCRT has been included for maintenance purposes only.
    

APAR Information

  • APAR number

    OA41033

  • Reported component name

    VTAM V4 MVS/ESA

  • Reported component ID

    569511701

  • Reported release

    1C0

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-12-14

  • Closed date

    2013-01-09

  • Last modified date

    2013-03-04

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

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

    UA67651 UA67652

Modules/Macros

  • ISTRPCRT ISTTSCAR
    

Fix information

  • Fixed component name

    VTAM V4 MVS/ESA

  • Fixed component ID

    569511701

Applicable component levels

  • R1C0 PSY UA67651

       UP13/02/20 P F302

  • R1D0 PSY UA67652

       UP13/02/20 P F302

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.



Rate this page:

(0 users)Average rating

Add comments

Document information


More support for:

z/OS family

Software version:

1C0

Operating system(s):

z/OS

Reference #:

OA41033

Modified date:

2013-03-04

Translate my page

Machine Translation

Content navigation