IBM Support

IC70326: RUNNING MULTIPLE UPDATE SESSIONS AGAINST ONE TABLE ON AN UPDATABLE SDS INSTANCE CAN CRASH THE SECONDARY

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APAR status

  • Closed as program error.

Error description

  • You execute many update statements on one table of an SDS
secondary. The secondary assert fails and crashes, with various
stack traces.


Stack traces examples:


(1) crash on xchg thread (this failure seems most common)

proxyWriteReleaseOP_int
proxyWriteClnOp
proxyWriteApplyOPs
secRemApplyLSN
sdcloneRemApplyLSN
next_recvr
prod_loop2
producer_thread
startup


(2) crash on sqlexec thread

proxyWritePostDML_int
proxyWritePostUpdate
doupdate
chkrowcons
dodmlrow
dodelupd
excommand
sq_execute
sqmain
spawn_thread
startup


(3) crash on sqlexec thread

proxyWriteDetectHotRow
gettupl
scan_next
dodelupd
excommand
sq_execute
sqmain
spawn_thread
startup

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED:                                              *
* All users on updatable secondary servers                     *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* Secondary servers with multiple CPU VP's crashes in certain  *
* conditions when there's very high degree of concurrency.     *
****************************************************************
* RECOMMENDATION:                                              *
* Please upgrade to 11.50.xC8 when available.                  *
****************************************************************

    



Problem conclusion


    

  • Problem is first fixed in 11.50.xC8.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IC70326
    • 

  • Reported component name
    IBM IDS ENTRP E
    • 

  • Reported component ID
    5724L2304
    • 

  • Reported release
    B15
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2010-07-30
    • 

  • Closed date
    2011-01-20
    • 

  • Last modified date
    2011-01-20
    • 





    

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

    • 

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

    • 



Fix information


    

  • Fixed component name
    IBM IDS ENTRP E
    • 

  • Fixed component ID
    5724L2304
    • 



Applicable component levels


    

  • RB15  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            20 January 2011
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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