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PM78902: ABENDU0780 AFTER /STO REG ABDUMP COMMAND FOR REGION IN SCHEDULE PROCESS. BLKM LATCH HELD, DUE TO DFSCBTS DDIR FROM DBFCPY00

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Customer issued a /STO REG JOBNAME xxxxxx ABDUMP command against
    an MPP region which was in the middle of scheduling process.
    DFSASK00->DBFCPY00->DFSCBTS DDIR,OPTION=NOSER->DFSSCBT0->
    DFSSBLK0. DFSSBLK0 obtains the BLKM latch unconditionally,
    and this latch is not recoverable. To prevent U0780, ABDUMP
    command must be defered if this latch is held. IMS needs to
    set issue a DFSXMWIN ABDUMP_SYNC around this process to defer
    U0474 abend until latch has been released.
    

Local fix

  • Don't issue ABDUMP command against a region in process of
    scheduling.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: IMSFP V12 DEDB USERS.                        *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABENDU0780 AFTER /STO REG ABDUMP        *
    *                      COMMAND FOR REGION IN SCHEDULE          *
    *                      PROCESS. BLKM LATCH HELD, DUE TO        *
    *                      DFSCBTS DDIR FROM DBFCPY00.             *
    ****************************************************************
    * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
    ****************************************************************
    This service correct an ABENDU0780 problem due to the command
    /STO REG JOBNAME xxxxxx ABDUMP issued against
    an MPP region which was in the middle of scheduling process
    and holding BLKM latch.
    DFSASK00->DBFCPY00->DFSCBTS DDIR,OPTION=NOSER->DFSSCBT0->
    DFSSBLK0. DFSSBLK0 obtains the BLKM latch unconditionally,
    and this latch is not recoverable. To prevent U0780, ABDUMP
    command must be deferred if this latch is held.
    

Problem conclusion

  • GEN:
    KEYWORDS:
    
    *** END IMS KEYWORDS ***
    The following change has been made to correct the reported
    problem:
    
    DBFCPY00: Add code to issue DFSXMWIN SET CALLERID=ABDUMP_SYNC
              and DFSXMWIN RESET CALLERID=ABDUMP_SYNC around
              the DFSCBTS FIND DDIR request to reject /STO REGION
              ABDUMP command.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PM78902

  • Reported component name

    IMS V12

  • Reported component ID

    5635A0300

  • Reported release

    200

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2012-12-10

  • Closed date

    2013-01-17

  • Last modified date

    2013-02-04

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

    PM78003

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

    UK91003

Modules/Macros

  • DBFCPY00
    

Fix information

  • Fixed component name

    IMS V12

  • Fixed component ID

    5635A0300

Applicable component levels

  • R200 PSY UK91003

       UP13/01/24 P F301 Ž

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:
14 December 2020