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PH15304: CICS POLICY WITH TASK RULE FOR STORAGE ALLOCATION THAT EMITS AN EVENT LOOPS CAUSING SOS CONDITION.

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APAR status

  • Closed as program error.

Error description

  • When the Policy for storage allocation has been met. The
associated event is triggered. CODE added in CICS 5.4 writes
some container records. This uses TASK31 storage. DFHMPAC thinks
that the container TASK31 storage is exceeding the threshold.
So an event is triggered. A "recursive loop" continues until all
storage is exhausted and a SOS condition occurs. CICS has to be
recycled to recover.

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED: All CICS users.                              *
****************************************************************
* PROBLEM DESCRIPTION: A CICS storage allocation policy goes   *
*                      into a never-ending recursive loop      *
*                      and CICS either stalls "short on        *
*                      storage" or abends 40D.                 *
****************************************************************
A CICS storage allocation policy is triggered, and drives
an event adapter.
The CICS MP domain begins a recursive loop, creating containers,
and GETMAINing storage, which causes MP domain to be called
again.
Eventually CICS runs out of storage, and either goes SOS or
abends 40D.
Additional keywords: Perform_action_for_task_rule
                     DFHSM0131 40D ABENDS40D
                     THRESHOLD DFHEP CHAR
                     CONTAINER PUT_CONTAINER

    



Problem conclusion


    

  • DFHMPAC has been changed to increment threshold values
correctly.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PH15304
    • 

  • Reported component name
    CICS TS Z/OS V5
    • 

  • Reported component ID
    5655Y0400
    • 

  • Reported release
    100
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2019-08-06
    • 

  • Closed date
    2019-09-02
    • 

  • Last modified date
    2019-10-01
    • 





    

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

    • 

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

    
UI65099 UI65100
    

    • 



Modules/Macros


    

  • DFHMPAC

    



Fix information


    

  • Fixed component name
    CICS TS Z/OS V5
    • 

  • Fixed component ID
    5655Y0400
    • 



Applicable component levels


    

  • R100  PSY  UI65099
       UP19/09/05  P  F909
    • 

  • R200  PSY  UI65100
       UP19/10/01  P  F909
    • 



Fix is available


    

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


            

            


                        

            Modified date:
            

            01 October 2019
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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