In order to avoid an exception during the orb.resolve_initial_references("NameService") I launch omniNames (omniORB 3.0.3) as follow : omniNames -ORBpoa_iiop_name_port 127.0.0.1:2810 2809 And of course my java corba server : java -Dorg.omg.CORBA.ORBInitialHost=192.168.4.99 -Dorg.omg.CORBA.ORBInitialPort=2809 TimeServer David.