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PM96818: WHEN FORMATTING THE LM DOMAIN (LOCK MANAGER) VIA IPCS A LOOP IS ENCOUNTERED WHEN PROCESSING THE LMQUICK1 CELLS.

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APAR status

  • Closed as program error.

Error description

  • When the customer is using VERBX DFHPD670 'LM=3' to format a
dump causes a loop formatting the LMQUICK1 cell. This causes
excessive CPU utilization and spool output which causes an S878
abend to occur.
ADDITONAL KEYWORDS:
KIXREVRJS

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED: All CICS users.                              *
****************************************************************
* PROBLEM DESCRIPTION: When formatting the LM domain LMQUICK1  *
*                      cell, IPCS encounters a loop and S878   *
*                      abend.                                  *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
A customer is using IPCS to format LM domain LMQUICK1 cell, but
a loop is encountered and eventually an S878 abend. In DFHLMDUF,
the buffer for QUICKCELL_1 is allocated after a GET_BLOCK, but
it may be reused after a subsequent FORMAT_BLOCK call. If this
happens, the QUICKCELL_1 does not contain valid contents and
and this may lead to the loop and S878 abend.
Additional keyword: ABEND878

    



Problem conclusion


    

  • DFHLMDUF has been changed so that the QUICKCELL_1_NEXT is saved
before it calls DFHDUFUT again.

    



Temporary fix


    

  • FIX AVAILABLE BY PTF ONLY

    



Comments


    

  • 



APAR Information




    

  • APAR number
    PM96818
    • 

  • Reported component name
    CICS TS Z/OS V4
    • 

  • Reported component ID
    5655S9700
    • 

  • Reported release
    700
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2013-09-11
    • 

  • Closed date
    2013-11-15
    • 

  • Last modified date
    2013-12-02
    • 





    

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

    • 

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

    
PM99804 UI12843
    

    • 



Modules/Macros


    

  •    DFHLMDUF

    



Fix information


    

  • Fixed component name
    CICS TS Z/OS V4
    • 

  • Fixed component ID
    5655S9700
    • 



Applicable component levels


    

  • R700  PSY  UI12843
       UP13/11/30  P  F311
    • 



Fix is available


    

  • Select the PTF appropriate for your component level.
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Document Information


            

            


                        

            Modified date:
            

            02 December 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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