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OA55836: PDSE DIB LATCH NOT FREED AFTER CANCEL OF JOB

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DIB LATCH was not freed after job CANCEL . The cleanup
    routine for IGWLHJIN has not released the DIB latch.
    
    V SMS,PDSE1,ANALYSIS shows:
    IGW031I PDSE ANALYSIS  Start of Report (SMSPDSE1)
    ---------data set name---------------------- -----vsgt-------
    pdse.data.set.name                           01-volser-007F02
    ++ Unable to latch DIB:000000007E96E320
       Latch:000000007E98B940 Holder(00DC:009ACD90)
       Holding Job:jobname
    PDSE ANALYSIS  End of Report(SMSPDSE1)
    
    Logrec entry for cancelled job shows one of the two calling
    sequence:
    IGWLHSUS : IGWLHJIN : E01DACND : IGWFARR3
    IGWLHJIN : E01DACND : IGWFARR3
    
    The Logrec entry may also contain the PDSE data set name as
    displayed in the IGW031I message.
    
    Additional keywords: orphan orphaned hang
                         ABEND13E S13E ABEND222 S222
    

Local fix

  • Using V SMS,PDSE1,FREELATCH command to release the 'orphaned'
    DIB Latch.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All PDSE users.                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Canceling a job while a PDSE is being opened can result in   *
    * PDSE failing to release a latch, which will eventually be    *
    * released by the end of memory resource manager. This has a   *
    * side effect of causing other open attempts for the same PDSE *
    * to be delayed until the latch is eventually release.         *
    * The condition is normally indicated by both a IGW038A        *
    * message indicating potential problems and following a PDSE   *
    * ANALYSIS invocation, a IGW031I PDSE ANALYSIS report with the *
    * message "++ Unable to latch DIB". When the latch is in this  *
    * state, issuing a PDSE REFRESH of the affected data set is    *
    * not advised, as it will prevent further PDSE ANALYSIS        *
    * commands from executing until the latch condition has been   *
    * resolved.                                                    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    

Problem conclusion

  • Ensured the latch is released appropriately.
     KEYWORDS: PDSE/K
    

Temporary fix

Comments

APAR Information

  • APAR number

    OA55836

  • Reported component name

    EXTENDED DATA S

  • Reported component ID

    5695DF115

  • Reported release

    230

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-07-13

  • Closed date

    2018-09-04

  • Last modified date

    2018-11-01

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

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

    UA97231

Modules/Macros

  • IGWLHJIN
    

Fix information

  • Fixed component name

    EXTENDED DATA S

  • Fixed component ID

    5695DF115

Applicable component levels

  • R230 PSY UA97231

       UP18/10/03 P F810

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:
01 November 2018