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IT30819: DB2 SERVER TERMINATES ABNORMALLY IN SQLNQ_UDF_SPECIFIC WITH STMT_CONC=LITERALS

Fixes are available

Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows

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APAR status

  • Closed as program error.

Error description

  • In some rare instances, with the statement concentrator enabled
(database cfg stmt_conc=LITERALS), the Db2 server may terminate
abnormally while compiling a SQL query.

The stack will look something like this example from Linux:
...
0x00007F3156B46CD4
_Z18sqlnq_udf_specificPP8stknode_i10actiontypePhP3loc + 0x0395
                (/home/.../sqllib/lib64/libdb2e.so.1)
0x00007F31562917D0 _Z12sqlnp_smactnP8sqlnp_cbi + 0x2bee
                (/home/.../sqllib/lib64/libdb2e.so.1)
0x00007F3156275323 _Z12sqlnp_parserP8sqlnp_cb + 0x0a87
                (/home/.../sqllib/lib64/libdb2e.so.1)
0x00007F315627F412
_Z10sqlnp_mainP12sqlnq_stringbP3locPP9sqlnq_qur + 0x1346
                (/home/.../sqllib/lib64/libdb2e.so.1)
0x00007F3156A1681D
_Z21sqlnq_handle_sql_stmtRP9sqlnq_qtbRK12sqlnq_string13sqlnq_qur
Type14sqlnq_qtbStateS4_S4_PKhP13sqlrg_trigrecP22sqlrg_resolved_r
t_listP20sqlnq_namespace_listPK14sqlrxCollationhhP3loc + 0x08f8
                (/home/.../sqllib/lib64/libdb2e.so.1)
0x00007F3156BB88B4
_Z31sqlnq_expand_inline_scalar_funcP9sqlnq_pidP9sqlnq_oprP9sqlnq
_expbbbb + 0x2ee2
                (/home/.../sqllib/lib64/libdb2e.so.1)
...

Local fix

  • Disable the statement concentrator (stmt_conc=OFF)

Problem summary

  • ****************************************************************
* USERS AFFECTED:                                              *
* ALL                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Db2 version 11.1.4.6 or later                     *
****************************************************************

Problem conclusion

  • First fixed in Db2 version 11.1.4.6

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT30819
    • 

  • Reported component name
    DB2 FOR LUW
    • 

  • Reported component ID
    DB2FORLUW
    • 

  • Reported release
    B10
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2019-11-02
    • 

  • Closed date
    2021-03-17
    • 

  • Last modified date
    2021-03-17
    • 





    

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

    • 

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

    
IT30866
    

    • 



Fix information


    

  • Fixed component name
    DB2 FOR LUW
    • 

  • Fixed component ID
    DB2FORLUW
    • 



Applicable component levels


    

  • RB10  PSN
       UP
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            04 May 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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