The network service that was requested for this connection, such as TCP with sockets or TCP with TLI, is not available on the desired system or the specified database server. Use a supported network service; verify that the nettype field is correctly specified for the desired database server in the $INFORMIXDIR/etc/sqlhosts file. If the network service is available on the system but not on the database server, ask your DBA to turn on the service when the DBA initializes the database server.