Identify the Informix tcp service name Unix Database Servers Login to your Unix database server as the Informix user. Ensure the Informix environment is properly set. Execute this command: echo $INFORMIXSERVER Execute this command: more $INFORMIXDIR/etc/sqlhosts Look for the line that begins with the $INFORMIXSERVER value, and note the value that appears in the fourth column. This is your service name. Windows Database Servers Login to your Windows database server. Open an MS-DOS command prompt. Run this command: regedit Drill down to HKEY_LOCAL_MACHINE\ SOFTWARE\ INFORMIX\ SQLHOSTS Look for the value passed to Service. This is your service name.