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OA48521: HANG ON SYSZIGG4 AFTER RESUME IS ISSUED

A fix is available

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APAR status

  • Closed as program error.

Error description

  • SYSZIGG4 is the resource used to control access to a catalog
    when the ALTER SUSPEND or F CATALOG,RECOVER,SUSPEND commands are
    issued.   In cases when requests not authorized to the
    IGG.CATLOCK facility class begin queueing for access to the
    catalog and RESUME is finally issued,  these requests will
    remain waiting of the SYSZIGG4 resource which is never released.
    ALTER RESUME fails to release the resource and there are
    varying degrees of success using the F CATALOG,RECOVER,RESUME
    command.
    
    IEC367W CATALOG STILL SUSPENDED
    
    CATKEYS: CAT2015 CATHANG CATRLS
    

Local fix

  • F CATALOG,RECOVER,RESUME or ALTER UNLOCK the catalog.  If that
    fails to release contention, use F CATALOG,RESTART to free the
    SYSZIGG4 resource
    additional local fix:
    Issue MODIFY CATALOG UNLOCK for catalog.
    Issue MODIFY CATALOG RECOVERY RESUME for catalog.
    Issue MODFIY CATALOG ALLOCATED to ensure catalog is no longer in
    SUSPEND status.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of User Catalog HDZ2210 and above. *
    ****************************************************************
    * PROBLEM DESCRIPTION: When issuing F CATALOG,RECOVER,         *
    *                      RESUME(UCAT) against a suspended        *
    *                      User Catalog that is not in a           *
    *                      SYSPLEX environment may experience      *
    *                      a hang.                                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When F CATALOG,RECOVER,RESUME(UCAT) is issued against a
    UCAT that is not shared in a SYSPLEX environment
    ENQUEUE SYSZIGG4 is not released which results in a
    Hang.
    

Problem conclusion

  • The Catalog Resume code was modified to to release
    the SYSZIGG4 ENQUEUE and allow requests to be resumed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    OA48521

  • Reported component name

    ICF CATALOG & I

  • Reported component ID

    5695DF105

  • Reported release

    210

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    YesSpecatt / Pervasive / Xsystem

  • Submitted date

    2015-07-30

  • Closed date

    2016-02-18

  • Last modified date

    2016-04-05

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

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

    UA80743 UA80744

Modules/Macros

  • IGG0CLRC
    

Fix information

  • Fixed component name

    ICF CATALOG & I

  • Fixed component ID

    5695DF105

Applicable component levels

  • R210 PSY UA80744

       UP16/03/21 P F603

  • R220 PSY UA80743

       UP16/03/21 P F603

Fix is available

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Document Information

Modified date:
05 April 2016