IBM Support

IT29520: ZLIB SYMBOLS INSIDE LIBDB2.SO ARE GLOBALLY VISIBLE WHICH MEANS THEY COLLIDE WITH ZLIB SYMBOLS INSIDE LIBZ.SO

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

  • zlib symbols inside libdb2.so are globally visible which means
they collide with zlib symbols inside libz.so which is used by
customers.

For example :

nm -C .../sqllib/lib64/libdb2.so | grep " T " | grep gz

00000000009c2980 T gzclose
00000000009c1a20 T gzdopen
00000000009c2890 T gzeof
00000000009c29e0 T gzerror
00000000009c2600 T gzflush
00000000009c2100 T gzgetc
00000000009c2130 T gzgets
00000000009c1a10 T gzopen
00000000009c22b0 T gzprintf
00000000009c23c0 T gzputc
00000000009c23f0 T gzputs
00000000009c1e20 T gzread
00000000009c2800 T gzrewind
00000000009c2630 T gzseek
00000000009c1a70 T gzsetparams
00000000009c2880 T gztell
00000000009c21f0 T gzwrite

Also zip*/unzip* and inflate*/deflate*symbols.

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED:                                              *
* ALL DB2 for LUW users                                        *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to DB2 for LUW 11.1 Modification 4 Fix Pack 6 or     *
* later                                                        *
****************************************************************

    



Problem conclusion


    

  • First fixed in DB2 for LUW 11.1 Modification 4 Fix Pack 6

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT29520
    • 

  • 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
    2019-06-24
    • 

  • Closed date
    2021-02-18
    • 

  • Last modified date
    2021-02-18
    • 





    

  • 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
    DB2 FOR LUW
    • 

  • Fixed component ID
    DB2FORLUW
    • 



Applicable component levels


    

  • RB10  PSN
       UP
    • 

  • RB10  PSY
       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:
            

            03 May 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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