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PK07996: TS READ REQUEST CAUSES LMQUEUE TO KEEP A TSLOCK WHEN TASK IS UNABLE TO HONOR A UNCONDITIONAL GETMAIN FOR USDA STORAGE.

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APAR status

  • Closed as program error.

Error description

  • an exec cics read for shared tempstorage causes a hang when the
unconditional getmain for udsa storage fails due to lack of udsa
LMQUEUE continues s to hold the TSLOCK. Many user task will
suspend with LMQUEUE waits for TSLOCK. There will be a task that
wil be wait for UDSA storage also.

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED: All.                                         *
****************************************************************
* PROBLEM DESCRIPTION: Tasks hung waiting on TSLOCK.           *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
A task attempted to GETMAIN some SET storage for a shared
temporary storage queue but this request suspended because
there was insufficient UDSA storage available. However, the
task still held the TSLOCK, thus preventing other tasks from
acquiring it.

Additional keyword: TSSETSTG

    



Problem conclusion


    

  • DFHTSSH has been modified and will now release and re-acquire
the TSLOCK around the GETMAIN.

    



Temporary fix


    

  • FIX AVAILABLE BY PTF ONLY

    



Comments


    

  • 



APAR Information




    

  • APAR number
    PK07996
    • 

  • Reported component name
    CICSTS 3.1 Z/OS
    • 

  • Reported component ID
    5655M1500
    • 

  • Reported release
    400
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2005-06-27
    • 

  • Closed date
    2005-07-19
    • 

  • Last modified date
    2005-08-01
    • 





    

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

    
PK07851
    

    • 

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

    
UK05500
    

    • 



Modules/Macros


    

  •    DESTSSH  DFHTSSH  DFHTSSHC DFHTSSHD DFHTSSHI

    



Fix information


    

  • Fixed component name
    CICSTS 3.1 Z/OS
    • 

  • Fixed component ID
    5655M1500
    • 



Applicable component levels


    

  • R400  PSY  UK05500
       UP05/07/27  P  F507
    • 



Fix is available


    

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


            

            


                        

            Modified date:
            

            01 August 2005
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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