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PM93688: DB2 11 NFM: PARTITION-BY-GROWTH TABLE SPACE WITH MEMBER CLUSTER GETS HIGH GETPAGE COUNT DURING HIGHLY INTENSIVE INSERT WORKLOAD

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APAR status

  • Closed as program error.

Error description

  • DB2 11 NFM: partition-by-growth table space with MEMBER CLUSTER
may get high getpage count during highly intensive INSERT
workload.
                                                       (d165813)

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED: All DB2 for z/OS V10 and V11 user of         *
*                 Universal Table space with Member Cluster    *
*                 attribute                                    *
****************************************************************
* PROBLEM DESCRIPTION: A invalid segment number was used       *
*                                                              *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
During the space search process of INSERT operation, a relative
segment was used instead of the absolute segment number when
locating the space map page covered by the target segment to
search for space. As the result, the same space map page was
was searched repeatedly and caused additional get page counts.

    



Problem conclusion


    

  • DB2 code was modified to use the correct segment number when
searching the next available segment for the space.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PM93688
    • 

  • Reported component name
    DB2 OS/390 & Z/
    • 

  • Reported component ID
    5740XYR00
    • 

  • Reported release
    B10
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2013-07-23
    • 

  • Closed date
    2013-09-14
    • 

  • Last modified date
    2013-10-03
    • 





    

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

    • 

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

    
UK97591 UK97592
    

    • 



Modules/Macros


    

  • DSNISGNS DSNISGSC

    



Fix information


    

  • Fixed component name
    DB2 OS/390 & Z/
    • 

  • Fixed component ID
    5740XYR00
    • 



Applicable component levels


    

  • RA10  PSY  UK97591
       UP13/10/01  P  F309
    • 

  • RB10  PSY  UK97592
       UP13/10/01  P  F309
    • 



Fix is available


    

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Document Information


            

            


                        

            Modified date:
            

            03 October 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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