PM67891: DFHSN0002 A SEVERE ERROR (CODE X'2056') HAS OCCURRED IN PROGRAM DFHSNAS

A fix is available

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APAR status

  • Closed as program error.

Error description

  • During the ENF processing, the snex is never updated to use the
    new user token, so it still has the old token. When
    SIGNON_ATI_SESSION processing, the snex_session_user_token is
    compared to the token return on the ADD_USER_WITHOUT_PASSWORD
    and they are different. This is not expected, so *EXC*
    USER_TOKEN_MISMATCH and DFHSN0002 dump was taken.
    .
    Additional Symptom(s) Search Keyword(s): KIXREVSWM
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: msgDFHSN0002 A severe error (CODE       *
    *                      X'2056') has occurred in program        *
    *                      DFHSNAS when using connections with     *
    *                      preset security.                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A CICS region is connected to another using an MRO connection
    with preset security.  When the connection is acquired a
    sign on is done for each session using the preset userid.
    The user token from this signon is stored in the SNEX for the
    session.
    
    At some later point CICS receives a notification from RACF
    that the group connection status of the preset userid has
    changed.  This causes user domain to mark the USUDB as having
    received a notification.
    
    A remote terminal start is then shipped to this CICS region
    across the MRO connection.  DFHSNAS performs a new signon of
    the session user, which is the preset userid.  DFHUSAD
    detects that the USUDB has received a notification so a full
    signon is done and a new USUDB and user token get created.
    The new user token is returned to DFHSNAS.  DFHSNAS detects
    that the user token has changed from the one stored in the
    SNEX.  This is unexpected so message DFHSN0002 is issued.
    
    Additional keywords:
    SN0002  ENF
    

Problem conclusion

  • DFHUSAD has been changed so that session signons are no longer
    affected by RACF notifications.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

  • ž**** PE12/12/21 FIX IN ERROR. SEE APAR PM79647  FOR DESCRIPTION
    ž**** PE12/12/21 FIX IN ERROR. SEE APAR PM79647  FOR DESCRIPTION
    ž**** PE13/12/30 FIX IN ERROR. SEE APAR PI08773  FOR DESCRIPTION
    

APAR Information

  • APAR number

    PM67891

  • Reported component name

    CICS TS Z/OS V4

  • Reported component ID

    5655S9700

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-28

  • Closed date

    2012-12-04

  • Last modified date

    2014-04-03

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

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

    UK83850 UK83851 PM79281

Modules/Macros

  •    DFHAMPFI DFHAMRDI DFHAMST  DFHFCRP  DFHSNAS
    DFHSNPU  DFHSNSG  DFHSNSU  DFHSNTU  DFHSNUS  DFHUSAD  DFHUSADT
    DFHUSDM  DFHUSES  DFHZSGN
    

Fix information

  • Fixed component name

    CICS TS Z/OS V4

  • Fixed component ID

    5655S9700

Applicable component levels

  • R600 PSY UK83850

       UP12/12/13 P F212

  • R700 PSY UK83851

       UP12/12/13 P F212

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:

CICS Transaction Server

Software version:

4.1

Reference #:

PM67891

Modified date:

2014-04-03

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