$ locale | grep LC_CTYPE
LC_CTYPE=en_US.UTF-8

$ db2 connect to sample

   Database Connection Information

 Database server        = DB2/LINUXX8664 10.5.5
 SQL authorization ID   = USER1
 Local database alias   = SAMPLE

$ db2 values current date

1
----------
09/26/2016

  1 record(s) selected.


$ db2 terminate
DB20000I  The TERMINATE command completed successfully.

$ export LC_CTYPE=fr_FR.UTF-8

$ db2 connect to sample

   Database Connection Information

 Database server        = DB2/LINUXX8664 10.5.5
 SQL authorization ID   = USER1
 Local database alias   = SAMPLE

$ db2 values current date

1
----------
26.09.2016

  1 record(s) selected.