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PI43662: MIGRATION JOB DSNTIJEN IS TIMED OUT BY THE ACCELERATOR SERVICE TASK WITH THE CORRELATION ID 033.ACCEKGE1. ACCEKG

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DB2IDAA defect pi43662 dpi43662
    During migration from V11 CM mode to V11 ENFM, DSNTIJEN
    fails at ENFM0001 with DSNT376I timeout message.  The
    holder of resource is the accelerator heartbeat monitor
    service task 033.ACCEKGE1.
    **************************************************************
    Additional Symptoms and Keywords:
     IDAA IDAAV2R1/K IDAAV3R1/K IDAAV4R1/K
     DSNT376I MSGDSNT376I 033.ACCEKGnn 033 ACCEKGnn ACCEKG
     ABEND04E AB04E S004E 04E 04E-00E40601 00E40601 RC00E40601
     DB2MIGV10/K DB2MIGV11/K DB2COEXIST/K DB2MIGV11/K
    

Local fix

  • use DB2 command -STOP ACCEL MODE(FORCE) SCOPE(GROUP)
    to terminate the accelerator
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 for z/OS users who use IBM DB2       *
    *                 Analytics Accelerator (IDAA).                *
    *                 Specifically those who are initiating an     *
    *                 Enable New Function Mode (ENFM) migration    *
    *                 from V10 or V11 Conversion Mode (CM)         *
    *                 while accelerator services are started.      *
    ****************************************************************
    * PROBLEM DESCRIPTION: Message DSNT376I is issued due to       *
    *                      resources held by a DB2 internal,       *
    *                      IDAA related, system task with a        *
    *                      correlation ID of 033.ACCEKGnn.         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A DB2 10 or 11 subsystem (stand-alone or a member of a data
    sharing group) is running in Conversion Mode (CM) with
    accelerator services started.  The Enable New Function Mode
    job (migration job DSNTIJEN) is submitted to initiate the
    migration to Enable New Function Mode (ENFM).  At job step
    ENFM0001, message DSNT376I is displayed indicating that the
    ENFM job has timed out waiting for a resource that is currently
    being held by one or more accelerator heartbeat monitor tasks.
    The correlation-id of an accelerator heartbeat monitor task is
    033.ACCEKGnn, where nn can be any two characters.
    The ENFM job fails with abend S04E and reason code 00E40601.
    

Problem conclusion

  • DB2 10 and 11 have been changed to ensure that the resources
    held by an internal accelerator related service task are
    released in a timely manner.  Any job or task needing access
    to those resources, e.g ENFM job, will therefore not be timed
    out waiting for those resources.
     Note: Data sharing users should be aware that, for a seamless
      migration, this change should be applied to all members that
      utilize accelerators.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI43662

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-06-23

  • Closed date

    2015-08-10

  • Last modified date

    2016-05-19

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

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

    UI30099 UI30100

Modules/Macros

  •    DSNX8EKG
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UI30099

       UP15/08/26 P F508

  • RB10 PSY UI30100

       UP15/08/26 P F508

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.



Document information

More support for: DB2 for z/OS

Software version: B10

Reference #: PI43662

Modified date: 19 May 2016


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