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PK80493: RESOURCE CREATION FAILED IF MAS WITH SAME NAME TERMINATES

A fix is available

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APAR status

  • Closed as program error.

Error description

  • BAS resource creation fails intermittently in one or more MASes
    during a mass recycle of CICS regions.  The CMAS EYULOG
    indicates a MAS with the same MASNAME has just terminated for
    a different CICSplex at the same time as a MAS with the same
    name is initializing.  If the system activity is very high, the
    startup may be delayed long enough where the CMAS LEEI task
    is processing an EENDDISC event for a MASNAME in one CICSplex
    while another MAS is starting in another CICSplex using the
    same MASNAME.  The CMAS CLET method invokes the CTDM method to
    cleanup any outstanding MASRL entries for the terminating
    MASNAME.  If another MAS is initializing at the same time and
    has an outstanding MAL on the MASRL list, CTDM will call the
    CTRC method to clean it up.  In this instance, the BAS BNCC
    method to create resources is still running in the starting MAS
    and is cleaned up prematurely resulting in the following
    messages in the MAS:
    .
    EYUBN0098E applid   Resource creation failed
    EYUNL0901I applid   LMAS LRT NORMAL termination initiated
    EYUBN0099I applid   Resource creation processing complete
    EYUNL0999I applid   LMAS LRT termination complete
    EYUXL0011I applid   LMAS shutdown in progress
    EYUCL0005I applid   ESSS Receive Link Task terminated
    EYUCL0007I applid   masname  link to cmasname terminated
    EYUXM0004I applid   Message Services termination complete
    EYUXL0023I applid   Trace Services termination requested
    EYUXZ0001I applid   Trace Services termination complete
    .
    The following messages will show up in the CMAS EYULOG:
    .
    EYUCL0009I cmasname ESSS ICT entered for Detach from masname
    EYUTS0021E cmasname Topology Connect of CICS System masname
               failed due to a MAS Resource Installation Time-Out.
    EYUTS0002E cmasname Topology Connect for masname  Failed
               APPLID(applid  ) CICSplex(cicsplex)
    .
    Additional Symptom(s) Search Keyword(s): sysidnt duplicate
    COIE ASP7 create install KIXREVPAD
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICSPlex SM V3R2M0 Users                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: Unpredictable errors may occur when two *
    *                      MASes that are part of separate         *
    *                      CICSplexes but have the same MAS name   *
    *                      are connected to the same CMAS.         *
    *                                                              *
    *                      If errors occur, they will occur when   *
    *                      one MAS terminates while the other is   *
    *                      active.                                 *
    *                                                              *
    *                      Generally, the types of errors that     *
    *                      will occur result from the premature    *
    *                      time out of requests sent to the active *
    *                      MAS.                                    *
    ****************************************************************
    * RECOMMENDATION: After applying the PTF that resolves this    *
    *                 APAR, all CMASes must be restarted.  Note    *
    *                 that the restarts do not need to occur at    *
    *                 the same time.                               *
    ****************************************************************
    When a MAS terminates, method EYU0CTDM (CTDM) runs in the CMAS
    to timeout all requests that were sent to the MAS from the CMAS
    but have not yet completed processing.  To do this, CTDM
    searches the MASRL list, which is a list of all outstanding
    requests sent to MASes connected to the CMAS, timing out all
    entries in the list that contain the name of the terminating
    MAS.
    
    Since the MASRL list only contains the MAS name, and since two
    MASes that reside in separate CICSplexes can have the same name,
    it may be possible for CTDM to timeout a request invalidly.
    

Problem conclusion

  • Since a MAS name is unique within a CICSplex, the MASRL list has
    been updated to include the CICSplex name that the MAS is part
    of.  CTDM will now only timeout those MASRL entries that match
    both the MAS name and CICSplex name.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PK80493

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    50M

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-02-12

  • Closed date

    2009-08-13

  • Last modified date

    2009-09-02

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

    PK80444

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

    UK49193

Modules/Macros

  •    EYUQCTDM EYURCMRL EYURCTDM EYUTRCOM EYUYCTDM
    EYUZCTDM EYU0CLET EYU0CSLT EYU0CTBP EYU0CTDM EYU0CTIN EYU9CMRU
    EYU9CMR3 EYU9CMR4 EYU9CMR5
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R50M PSY UK49193

       UP09/08/18 P F908

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:
02 September 2009