IBM Support

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

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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

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1"}]

Document Information

Modified date:
27 February 2021