IBM Support

OA53728: ABEND C0D DURING DELETE OF A VSAM LSR POOL

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When a VSAM LSR Pool is deleted, VSAM will free various control
    blocks and if they are page fixed it will issue a PGSER RELEASE
    
    In the reported case a data set that was open in LSR mode was
    being closed and the PGSER RELEASE was issued with a very large
    range - (X'00000000' to X'7C03FFFF'). This resulted in the abend
    COD and a spin loop.
    
    Other symptoms are 0C4 abends in csect IDA0192Y in load module
    IDA0192A when attempting to free storage. And ABEND073 RC24
    after a SETLOCK OBTAIN for RSMC in IAXPP when doing a PGSER
    RELEASE.
    
    Additional symptoms:
    CICS jobs fail with ABEND 071- excessive spin loops
    reported by message:
    DFHKE0997 DFHKESTX DRIVEN FOR CLEANUP ON AN ESSENTIAL TCB WITH
              COMPLETION CODE 00071000. UNABLE TO RECOVER.
    DFHKE0201 ABOUT TO TAKE SDUMP. DUMPCODE: KERNDUMP,
              DUMPID: 0/0000. (MODULE DFHKESTX).
    CICS is closing a file at the time of this error.
    USER'S AFFECTED: This problem affects any users of LSR pools
    that specify hiperspace buffers.  This includes users of SMB
    (System managed buffering) who specify hiperspace weighted,
    SMBHWT.
    OA50752
    
    CATKEYS:  ABENDC0D ABEND071 ABEND0C4 VSAM2017 VSAMLSR VSAMABEND
    

Local fix

  • Remove the PTFs for OA50752 if possible. These are UA92659
    UA92660
    
    Or
    
    Remove Hiperspace Buffers from those applications that use
    VSAM LSR with Hiperspace buffers.(Sometimes you will see
    HBUFNI=  or HBUFND=  in the AMP keyword or the SUBSYS
    keyword on the DD card for the cluster in the job. Remove
    HBUFNI and HBUFND, hiperspace buffers). Other users of
    hiperspace buffers include IMS and CICS and VSAM System Managed
    Buffering (SMB).
    
    Or
    
    Install ++apar or PTFs for OA53728 when available
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of VSAM LSR pools with hiperspace  *
    *                 buffers who have PTFs for OA50752 applied    *
    *                 (UA92659 and UA92660).                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: Various abends can occur during BLDVRP  *
    *                      or DLVRP if using hiperspace buffers.   *
    ****************************************************************
    * RECOMMENDATION: Apply PTFs.                                  *
    ****************************************************************
    The building of hiperspace buffers in an LSR (Local Shared
    Resources) buffer pool can corrupt the resource table and cause
    abends either during clean up of a build or during deletion of
    the pool.
    

Problem conclusion

  • Logic for hiperspace buffers has been corrected to add to the
    resource table correctly.
     KEYWORDS: DSENCRYPT/K
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    OA53728

  • Reported component name

    DFSMS VSAM

  • Reported component ID

    5695DF106

  • Reported release

    220

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-08-22

  • Closed date

    2017-09-01

  • Last modified date

    2017-11-07

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

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

    OA53762 UA93428 UA93429

Modules/Macros

  • IDA0A05B IDA0192F IDA0192G IDA0192H IDA0192J
    

Fix information

  • Fixed component name

    DFSMS VSAM

  • Fixed component ID

    5695DF106

Applicable component levels

  • R210 PSY UA93428

       UP17/09/06 P F709 «

  • R220 PSY UA93429

       UP17/09/06 P F709 «

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: z/OS family

Software version: 220

Operating system(s): z/OS

Reference #: OA53728

Modified date: 07 November 2017