I want to use a session bean to invoke a session bean method on the other ejb server, what shall I do? any examples?
thank you.

i do this:
for example, in weblogic:

    Properties p = new Properties();
    p.put(Context.INITIAL_CONTEXT_FACTORY,
      "weblogic.jndi.T3InitialContextFactory");
    p.put(Context.PROVIDER_URL,
      "t3://host:port");

    p.put(Context.SECURITY_PRINCIPAL, user);
    p.put(Context.SECURITY_CREDENTIALS, password);

    InitialContext ini = new InitialContext(p);

    HomeEJB home = ctx.lookup("jndi_name_EJB");
    ...

In another application server, change the values of Properties.

good luck,
César.