PK17509: S878-10 ABEND OCCURS WHEN HEAP MANAGER IS ACTIVE

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • On MVS (z/OS), the TSM server may be terminated with S878-10
    abend occurs when the heap manager is active. A dump of the
    TSM server address space created at the time of the abend
    revealed that an allocated memory's control block was twice
    as big. A review of the code revealed that the sizes of the
    allocated memory's header and trailer blocks were included
    twice in the actual size of the allocated memory. When a
    large number of memory allocations are active, memory can be
    exhausted resulting in the S878-10 abend and other
    out-of- memory conditions.
    
    A ZAP was developed to prevent adding the header and trailer
    blocks sizes and the results were favorable.
    
      TSM Versions Affected:
      5.2.6.x and 5.3.x servers on MVS (z/(OS)
    
      Customer/L2 Diagnostics (If Applicable):
      None
    
      Initial Impact:
      High
    
      Additional Keywords:
      None
    

Local fix

  • Apply the following ZAP to the TSM server:
    
    //TSMZAP   JOB MSGLEVEL=(1,1),MSGCLASS=H,CLASS=A,REGION=4M
    //*
    //*-------------------------------------------------------------
    //* To preserve the production version of the TSM server module,
    //* make a copy of the production module prior to applying this
    //* ZAP. This is for ANRSERV/DSMSERV 5.2.6.0 and 5.3.x.
    //*
    //*  When necessary, place the saved copy of the ANRSERV/DSMSERV
    //*  module back to the production library.
    //*-------------------------------------------------------------
    //*  Purpose of this ZAP:
    //*    Prevent the allocation of memory that eventually ends up
    //*    as dead space which results in out-of-memory conditions.
    //*-------------------------------------------------------------
    //*
    //ZAP1    EXEC PGM=AMASPZAP
    //SYSPRINT DD  SYSOUT=A
    //*
    //*--------------->|||||||||||---> Replace with your library
    //*                vvvvvvvvvvv
    //SYSLIB   DD  DSN=TSM.LINKLIB,DISP=SHR
    //SYSIN    DD    *
     NAME ANRSERV ANRHEAP
     VER 00A4 41700048
    *
     REP 00A4 41700000
    *
    /*
    //
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: 5.2.7 and 5.3.2 servers on MVS.              *
    ****************************************************************
    * PROBLEM DESCRIPTION: See ERROR DESCRIPTION.                  *
    ****************************************************************
    * RECOMMENDATION: Apply fixing level when available. This      *
    *                 problem is currently projected to be fixed   *
    *                 in levels 5.2.8 and 5.3.3. Note that this    *
    *                 is subject to change at the discretion of    *
    *                 IBM.                                         *
    ****************************************************************
    *
    

Problem conclusion

  • The problem has been fixed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PK17509

  • Reported component name

    TSM FOR OS/390

  • Reported component ID

    5698ISMVS

  • Reported release

    520

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2006-01-06

  • Closed date

    2006-02-13

  • Last modified date

    2008-10-03

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

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

Fix information

  • Fixed component name

    TSM FOR OS/390

  • Fixed component ID

    5698ISMVS

Applicable component levels

  • R520 PSY UK15184

       UP06/06/08 P F606

  • R530 PSY

       UP

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


More support for:

Tivoli Storage Manager

Software version:

520

Reference #:

PK17509

Modified date:

2008-10-03

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