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Article #25290: Undefined service : gds_db/tcp

Problem:
Getting error:  
Unable to complete network request to host-faile to locate host machine. 
Undefined service : gds_db/tcp  when connecting using protocol tcp/ip.

Solution:
IB v4.x
IB V5.x

This error usually indicating that there is no entry of " gds_db	3050/tcp" 
in the SERVICES file on either the client or the server machine.  Add the 
entry to the file and reconnect.  The location of the SERVICES file is usually in:

Unix		/etc/SERVICES
NT		WINNT\system32\drivers\etc\SERVICES

Last Modified: 18-DEC-02