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PI08508: DB2 CONN BLOCKS ARE CORRUPT AND CAN NOT BE REUSED. THIS CAUSED AN ECSA STORAGE SHORTAGE.

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APAR status

  • Closed as program error.

Error description

  • The customer noticed an ECSA storage usage increase. Dump shows
ECSA storage allocated for pool "CONN,AGNT,FVL+OTHERS" for CONN
structure.  CONN blocks are corrupt and can not be reused --
CONN blocks containing 'FFFF' instead of an MVS SSI function
code.  This might caused by some DDF failures result in calling
DSN3SSCN with an invalid plist.

Local fix

  • N/A

Problem summary

  • ****************************************************************
* USERS AFFECTED: All users of DB2 10 and 11 for z/OS.         *
****************************************************************
* PROBLEM DESCRIPTION: Repeated START/STOP of DDF causes a     *
*                      slow storage leak and may cause an      *
*                      ECSA storage shortage.                  *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Starting and stopping DDF causes a slow leak of DB2 control
blocks and can eventually lead to an ECSA storage shortage.

Problem conclusion

  • DB2 has been modified to reuse the control blocks used during
DDF startup and shutdown.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PI08508
    • 

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

  • Reported component ID
    5740XYR00
    • 

  • Reported release
    A10
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2013-12-23
    • 

  • Closed date
    2014-04-02
    • 

  • Last modified date
    2014-05-02
    • 





    

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

    • 

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

    
UI16670 UI16671
    

    • 



Modules/Macros


    

  • DSN3SSCN DSN3SSES DSN3SSI1 DSN3SSRQ

    



Fix information


    

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

  • Fixed component ID
    5740XYR00
    • 



Applicable component levels


    

  • RA10  PSY  UI16670
       UP14/04/18  P  F404
    • 

  • RB10  PSY  UI16671
       UP14/04/18  P  F404
    • 



Fix is available


    

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Document Information


            

            


                        

            Modified date:
            

            02 May 2014
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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