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PH52815: ABEND 0C4 IN DFHDUTM+X'5AA' WHEN TRANSACTION TOKEN IS ZEROES

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APAR status

  • Closed as program error.

Error description

  • Abend 0C4 was taken on an LLC instruction in module DFHDUTM at
offset x'5AA'. Reg2 has been loaded with bytes of x'FF' which
are the direct cause of the 0C4.
.
Backing up in the code, we can see that Reg6 was supposed to be
loaded with the XM_TRANSACTION_TOKEN from offset x'204' into the
TASENTRY. The TASENTRY is located at 2BB00000; there are zeroes
at offset x'204'.
.
DFHDUTM goes to move the token+x'168' into the stack at offset
x'7B0; this is where the bytes of x'FF' come from (00000168
address).
KIXREVACC

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED: All CICS Users.                              *
****************************************************************
* PROBLEM DESCRIPTION: Abend 0C4 in DFHDUTM following a LG0772 *
*                      system dump.                            *
****************************************************************
It is possible to see an abend 0C4 in DFHDUTM following a system
dump being produced by the logger domain, for example LG0772.
CICS is attempting to create an audit record, including a userid
 which is not available for the LG task. Instead it is accessing
low-core and using the data found there.

Keyword: IGVDGNPP

    



Problem conclusion


    

  • DFHDUTM has been changed to use the region userid when the task
userid is not available.

    



Temporary fix


    

  • 



Comments


    

  • ×**** PE23/05/18 FIX IN ERROR. SEE APAR PH54593  FOR DESCRIPTION

    



APAR Information




    

  • APAR number
    PH52815
    • 

  • Reported component name
    CICS TS Z/OS V6
    • 

  • Reported component ID
    5655YA100
    • 

  • Reported release
    400
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2023-02-23
    • 

  • Closed date
    2023-03-06
    • 

  • Last modified date
    2023-07-12
    • 





    

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

    
PH51403
    

    • 

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

    
UI90839
    

    • 



Modules/Macros


    

  • DFHDUTM

    



Fix information


    

  • Fixed component name
    CICS TS Z/OS V6
    • 

  • Fixed component ID
    5655YA100
    • 



Applicable component levels


    

  • R400  PSY  UI90839
       UP23/03/07  P  F303
    • 



Fix is available


    

  • Select the PTF appropriate for your component level.
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              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.1","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            12 July 2023
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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