IBM Support

IT25229: DB2 MAY ABEND WHILE COMPILING A QUERY CONTAINING REDUNDANT PREDICATE

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APAR status

  • Closed as program error.

Error description

  • Db2 may abend while compiling a query containing redundant
predicates.

An example stack trace is seen below.

...
sqlo_trce
sqloEDUCodeTrapHandler
_restore_rt
sqlnr_qun_local_ppd
sqlnr_local_magic_detail
sqlnr_localmagic_action
sqlnr_comp
sqlnr_seq
sqlnr_rcc
sqlnr_magic_detail_action
sqlnr_comp
sqlnr_seq
sqlnr_rcc
sqlnr_endqtb_action
sqlnr_comp
sqlnr_seq
sqlnr_rcc
sqlnr_start_action
sqlnr_comp
sqlnr_seq
sqlnr_rcc
sqlnr_exe
sqlnn_cmpl
...

Here is an example stack trace from Windows:

...
sqlnr_cse_trans_pid
sqlnr_magic_detail_action
sqlnr_max_card_action
sqlnrGlobInfo::initialize
sqlnr_seq
sqlnr_max_card_action
sqlnrGlobInfo::initialize
sqlnr_seq
sqlnr_startqtb_cond
sqlnrGlobInfo::initialize
sqlnr_seq
sqlnr_select_unique
sqlnrGlobInfo::initialize
sqlnr_seq
sqlnr_exe
sqlnn_cmpl
...

Local fix

  • Remove any redundant predicates from the query.

Problem summary

  • ****************************************************************
* USERS AFFECTED:                                              *
* DB2 for LUW users                                            *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to at least Db2 11.1 FP4                             *
****************************************************************

Problem conclusion

  • Problem was first fixed in Db2 11.1 FP4

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT25229
    • 

  • Reported component name
    DB2 FOR LUW
    • 

  • Reported component ID
    DB2FORLUW
    • 

  • Reported release
    A10
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2018-06-01
    • 

  • Closed date
    2018-12-26
    • 

  • Last modified date
    2018-12-26
    • 





    

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

    
IT25185
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    DB2 FOR LUW
    • 

  • Fixed component ID
    DB2FORLUW
    • 



Applicable component levels


    








      
          
                    

          

          [{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
          

                    

        
        

        

      


      


        

            

            
Document Information


            

            


                        

            Modified date:
            

            26 December 2018
            

            
            
          

        


        

        


      


    


  





    

  



  
    
      

      
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