Accessing DB2 tables from postgresql

Hello,

I am trying to access few table present in DB2 LUW from postgres9.5
database.

I have installed unixODBC driver and connection to DB2 is working fine.
I have installed CartoDB/odbc_fdw foreign data wrappers.
I have user below commands to create foreign table:
$ create extension odbc_fdw;
$ CREATE USER MAPPING FOR postgres SERVER odbc_server_db2 options(odbc_UID
'<username>', odbc_PWD '<password>');
$ CREATE FOREIGN TABLE odbc_table (CTGRY_ID INTEGER, CTGRY_CD
VARCHAR(10),UPDT_TS TIMESTAMP) SERVER odbc_server_db2 OPTIONS (database
'TESTV9', schema 'schema1', table 'table1' );

All commands work fine, however when I try to select data from table it
throws error:
$ select * from odbc_table;
ERROR: Executing ODBC query

Can anyone help me here?
How can I access DB2 LUW or zOS database tables from postgres?

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Thanks & Regards,
Swapnil Vaze