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PM87568: ABEND0C4 FROM EZBRESRV DURING DB2 DDF START UP FOLLOWED BY ABEND0C1 IN DDF RECOVERY DSNLFRCV DB2 TERMINATED WITH RC00E50727

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DB2DDF DB2TCPIP defects pm87568 dpm87568
    ABEND0C4 from EZBRESRV followed by ABEND0C1 in DDF recovery
    routine DSNLFRCV. DB2 eventually terminated with RC00E50727.
    **************************************************************
    Additional Symptoms and Keywords:
     ABEND0C4 AB0C4 S00C4 0C4
      0C4-00000004 00000004 RC00000004
       EZBRESRV
       DSNVRCT
     Overlay overlaid DB2OVRLAY DB2OVRLAY/K
     ABEND04E AB04E S004E 04E
      04E-00E50053 00E50053 RC00E50053
       DSNSVSTK DSNSVSTK+05D2 05D2 OFFSET05D2
     ABEND0C1 AB0C1 S00C1 0C1
      0C1-00000001 00000001 RC00000001
      All registers zero, except R14 which refers to DSNLILNR
      (GET_LCL_HOST_INFO procedure).
     ABEND04F AB04F S004F 04F
      04F-00E50727 00E50727 RC00E50727
     MSGDSNV086E DSNV086E 00E50727 RC00E50727
     DB2TERM
    

Local fix

  • Recycle DB2
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All Distributed Data Facility (DDF) users.   *
    ****************************************************************
    * PROBLEM DESCRIPTION: Intermittent abend 0C4-00000004         *
    *                      EZBRESRV (no dump).  This may           *
    *                      potentially be followed by a binary     *
    *                      zero overlay of DB2 stack storage       *
    *                      which may lead to unpredictable         *
    *                      symptoms including:                     *
    *                      o Abend 0C1-00000001.                   *
    *                      o Abend 04E-00E50053 DSNSVSTK+05D2.     *
    *                      o DB2 termination with message          *
    *                        DSNV086E and reason code 00E50727.    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When initializing the OMVS/USS and TCP/IP communications
    environment, DB2 (DDF) must invoke the USS BPX4GNI callable
    service to obtain the domain (host) name.
    A service name buffer area and its associated length are two
    other required parameters of this service.  DB2 (DDF) is not
    concerned with obtaining the service name but failed to
    initialize its service name length parameter value to zero to
    reflect its disinterest.
    Depending on the residual contents of this service name length
    parameter value, an 0C4-00000004 EZBRESRV abend may be
    detected.  This may also cause an overlay of DB2 stack storage,
    potentially massive, which may lead to unpredictable symptoms
    that may ultimately result in a termination of DB2.
    

Problem conclusion

  • DB2 has been changed to invoke the BPX4GNI callable service
    with a Service_Buffer_Length parameter value of zero to reflect
    its disinterest in obtaining the service name.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PM87568

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-04-22

  • Closed date

    2013-05-09

  • Last modified date

    2013-06-04

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

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

    UK94174 UK94175

Modules/Macros

  • DSNLILNR
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK94174

       UP13/05/25 P F305 ½

  • R910 PSY UK94175

       UP13/05/25 P F305 ½

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:
04 June 2013