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

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 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