Since JDK 7 b94 tnameserv doesn't work properly:

[stt-robot@stt-55]$ jdk1.7.0/bin/tnameserv -ORBInitialPort 9875
Exception in thread "main" java.lang.Error: fatal: missing resource bundle: com.sun.corba.se.impl.orbutil.resources.sunorb_en
        at com.sun.corba.se.impl.orbutil.CorbaResourceUtil.initResources(CorbaResourceUtil.java:90)
        at com.sun.corba.se.impl.orbutil.CorbaResourceUtil.getString(CorbaResourceUtil.java:34)
        at com.sun.corba.se.impl.orbutil.CorbaResourceUtil.getText(CorbaResourceUtil.java:67)
        at com.sun.corba.se.impl.orbutil.CorbaResourceUtil.getText(CorbaResourceUtil.java:57)
        at com.sun.corba.se.impl.naming.cosnaming.TransientNameServer.main(TransientNameServer.java:201)