URGENT: Can't connect to a MDB from a standalone application

Question

Hi, I hope somebody can help me. I'm trying to send messages to a MDB from a standalone client, but I have problems when looking up JMS queues and connection factories. The code is the following:
try {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.PROVIDER_URL, "ormi://192.168.64.173:3101/PruebaAS");
env.put(Context.SECURITY_PRINCIPAL,"admin");
env.put(Context.SECURITY_CREDENTIALS, "admin");
jndiContext = new InitialContext(env);
catch (NamingException e) {
System.out.println("Can't create JNDI API" +
"Context:" + e.toString());
System.exit(1);
* Look up connection factory and queue. If either does
not exist, exit.
try {
queue = (Queue)
jndiContext.lookup("java:comp/resource/ojms/Queues/queue2");
catch (NamingException e) {
System.out.println("JNDI API lookup failed." +
e.toString());
System.exit(1);
When program tries to look up the queue, I get the message: "JNDI API lookup failed.javax.naming.NamingException: Disconnected: Unknown command: 7"
What's the meaning of "unknown command:7?? I have deployed the MDB to an Oracle 9iAS 9.0.2 using enterprise manager, and create queues in an Oracle 9i 9.2.0 Server.
Please, I need some help. Thanks in advance.

Answer 1

I'm no expert, but I did get something like this working. One gotcha is that you need to have an instance of the database driver, since the Oracle queues use the database. Try something like this before you attempt the JNDI lookup:
Class.forName("oracle.jdbc.driver.OracleDriver");
If necessary, replace "oracle.jdbc.driver.OracleDriver" with the appropriate driver for your environment. Good luck.