Look in the code in EJB3 for anywhere we are binding anything into JNDI (search for bind). Catch any naming exception and wrap it with a new generic NamingException that

• sets the cause to be the thrown exception
• sets the exception message to be for example, "Could not bind EJB Foobars local interface", "Could not bind EntityManagerFactory with unitName XXXX to JNDI", etc...