Create/close QueueSession, QueueConnection

I have a Message Driven bean that on its onMessage() sends messages to another queue. The messages are posted to this queue only if certain conditions are met.
I lookup the QueueConnectionFactory and the Queue in the ejbCreate() method.
My question is - when should I create and close the QueueSession and QueueConnection objects?
A) create them in ejbCreate(), and close them in ejbRemove(), OR
B) create and close them in the onMessage()?
Thanks for the help!

Hi,
From the J2EE Tutorial (p. 1253).
The ejbCreate method, which has the following signature:
public void ejbCreate() {}
If your message-driven bean produces messages or does synchronous
receives from another destination, you use its ejbCreate method to look
up JMS API connection factories and destinations and to create the JMS
API connection.
The ejbRemove method, which has the following signature:
public void ejbRemove() {}
If you used the message-driven bean�s ejbCreate method to create a JMS
API connection, you ordinarily use the ejbRemove method to close the
connection.
Regards,
Magnus Strand

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          > >> We have run into the following situation using JMS under
          > >> Weblogic 6.1 SP3 (on both the clients and server, which have different
          > >server
          > >> names, so that is not the cause). We have no
          > >> problem connecting and sending messages from multiple clients to
          > >> the same server. However, after some period of time (which
          > >> varies), some "event" occurs that causes each client connection
          > >> to become ineffective, i.e., the next time you try to create a
          > >> new session off that connection, you ge a "Connection not found"
          > >> JMSException. In fact, when this occurs, all active client see
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          > >> server log of any problem. If I have each client re-create and
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Error when using same QueueSession in a multi threaded application

I have deployed a OSSJ Trouble Ticket refererence Implementation on Sun Java System App Server Platform Edition 8.1 default server.
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public class MessageSenderMultiThread extends Thread {
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private QueueReceiver queueReceiver = null;
private TextMessage message = null;
private TemporaryQueue tempQueue = null;
private QueueConnection tempQC = null;
private QueueSession tempQS = null;
private Queue tempQ = null;
String inputQname = "MyQueue";
String outputQname = "A";
private int sleepTime;
static InitialContext jndiContext = null;
Queue replyQueue=null;
Hashtable sessions=null;
static QueueConnection queueConnection = null;
public static String readFromFile(String fileName) {
String line = null;
try {
FileReader fr = new FileReader(fileName);
BufferedReader br = new BufferedReader(fr);
String temp = "";
line = "";
while ((temp = br.readLine()) != null) {
//System.out.println("line is"+line);
if (temp != null)
line = line + temp;
return line;
} catch (Exception ex) {
System.out.println("Exception occurred,Ex" + ex);
return line;
MessageSenderMultiThread(String strMsg, int sTime, QueueConnection qC, QueueSession qS, Queue q, String name) {
super(name);
this.strMessage = strMsg;
this.sleepTime = sTime;
this.tempQC = qC;
this.tempQS = qS;
this.tempQ = q;
sessions=new Hashtable();
System.out.println("Inside Constructior");
public void run() {
try {
queueSender = tempQS.createSender(tempQ);
tempQueue = tempQS.createTemporaryQueue();
queueReceiver = tempQS.createReceiver(tempQueue);
//queueReceiver = tempQS.createReceiver(replyQueue);
message = tempQS.createTextMessage();
message.setText(this.strMessage);
message.setJMSReplyTo(tempQueue);
//message.setJMSReplyTo(replyQueue);
message.setJMSCorrelationID("1234");
queueSender.send(message);
System.out.println(message.getText());
tempQC.start();
//while (true) {
Message m = queueReceiver.receive();
if (m != null) {
if (m instanceof TextMessage) {
message = (TextMessage) m;
if (message != null) {
System.out.println("########################corr id::"+message.getJMSCorrelationID());
queueReceiver.close();
//System.out.println("message:: " + message.getText() + "Thread Name " + this.getName());
} else
System.out.println("NULL");
} //else
//break;
System.out.println("Exiting !");
} catch (JMSException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
public static void main(String args[]) {
String inputQname = "System/RI/ApplicationType/TroubleTicket/Application/1-0;0-0;OSSJTTRI/Comp/MessageQueue";
QueueConnectionFactory queueConnectionFactory = null;
QueueSession queueSession = null;
Queue inputQueue = null;
try {
jndiContext = new InitialContext();
queueConnectionFactory = (QueueConnectionFactory) jndiContext.lookup("System/RI/ApplicationType/TroubleTicket/Application/1-0;0-0;OSSJTTRI/Comp/QueueConnectionFactory");
inputQueue = (Queue) jndiContext.lookup(inputQname);
queueConnection = queueConnectionFactory.createQueueConnection();
queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
} catch (JMSException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
String strRequest = null;
strRequest = readFromFile("C:/ISM/getTroubleTicketsByKeysRequest.xml");
new MessageSenderMultiThread(strRequest, 100, queueConnection, queueSession, inputQueue, "Thread1").start();
strRequest = readFromFile("C:/ISM/getTroubleTicketsByKeysRequest1.xml");
new MessageSenderMultiThread(strRequest, 100, queueConnection, queueSession, inputQueue,"Thread2").start();
System.out.println("OVER");
// System.exit(-1);
}

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If you need multiple threads to process messages you should either:
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Properties env = new Properties();
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createTemporaryQueue() already creates a unique
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Note as we discussed in the previous thread; you
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using a correlationID to match requests to
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James
http://logicblaze.com/
Hello Mr.James,
pleeeeeeeeeeeeeeease give me one example of how do i create only one temporary queue and differentiate resposes based on CorrelationID, i mean i am just not able to do it , i feel i will have to browse through entire queue matching for CorrelationId's, however u had earlier rejected this approach
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Thank you very much, flhood. This is my first time to gain aid from website except my school's BBS.
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Java(TM) Message Service 1.0.2 Reference Implementation (build b14)
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Nothing gain.
They are really puzzling me!

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Code Servlet in second OC4J:
package mypackage2;
import javax.servlet. *;
import javax.servlet.http. *;
import java.io. PrintWriter;
import java.io. IOException;
import javax.jms. *;
import javax.naming. *;
import java.util. *;
public class Servlet1 extends HttpServlet
private static final String CONTENT_TYPE = "text/html;charset=windows-1251";
public void init (ServletConfig config) throws ServletException
super.init (config);
String QUEUE_NAME = "OracleASjms/MyQueue1";
String QUEUE_CONNECTION_FACTORY = "OracleASjms/MyQCF";
public void doGet (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
response.setContentType (CONTENT_TYPE);
PrintWriter out = response.getWriter ();
out.println (" < html > ");
out.println (" < head > < title > Servlet1 < /title > < /head > ");
out.println (" < body > ");
try
Hashtable env = new Hashtable ();
env.put (Context. INITIAL_CONTEXT_FACTORY, "oracle.j2ee.rmi.RMIInitialContextFactory");
env.put (Context. SECURITY_PRINCIPAL, "admin");
env.put (Context. SECURITY_CREDENTIALS, "admin");
env.put (Context. PROVIDER_URL, "ormi://host_OC4J_1:23791/jcamdb");
env.put ("dedicated.rmicontext", "true");
InitialContext ic = new InitialContext (env);
QueueConnectionFactory connectionFactory = (QueueConnectionFactory)ic.lookup (QUEUE_CONNECTION_FACTORY);
QueueConnection connection = connectionFactory.createQueueConnection ();
connection.start ();
QueueSession queueSession =
connection.createQueueSession (false, Session.AUTO_ACKNOWLEDGE);
Queue queue = (Queue) ic.lookup (QUEUE_NAME);
ic.close ();
System.out.println (" Queue: " + queue);
QueueSender sender = queueSession.createSender (queue);
System.out.println (" creating Message: " + queue);
Message message = queueSession.createMessage ();
System.out.println (" Message created ");
message.setJMSType ("theMessage");
message.setLongProperty ("time", System.currentTimeMillis ());
message.setStringProperty ("id", "11111");
message.setStringProperty ("oamount", "55555");
message.setStringProperty ("message", "77777");
message.setStringProperty ("RECIPIENT", "MDB");
System.out.println (" Sending message... ");
sender.send (message);
System.out.println (" Message sent ");
sender.close ();
queueSession.close ();
connection.close ();
catch (Exception e)
System.out.println (" ** TEST FAILED ** < br > Exception: " + e);
out.println (e.toString ());
e.printStackTrace ();
out.println (" < p > The servlet has received a GET. This is the reply. < /p
");out.println (" < /body > < /html > ");
out.close ();
Error: This code send message in The First container, and should send in the second OC4J !!!!
Please answer :
As configure (what code it is necessary to write) servlet (any J2EE the application in OC4J) to use a path to OC4J JMS (remote OC4J JMS) through the Resource Adapter (using OracleASjms.rar). ???

How to insert message in OC4J JMS from standalone java client.

Hi,
I have been following available examples for creating standalone java clients to insert messages in JMS queues.
I am able to insert using java client when the SOA suite and the standalone java code are on same machine.
package producerconsumerinjava;
import javax.jms.*;
import javax.naming.*;
import java.util.Hashtable;
public class QueueProducer
public static void main(String[] args)
String queueName = "jms/demoQueue";
String queueConnectionFactoryName = "jms/QueueConnectionFactory";
Context jndiContext = null;
QueueConnectionFactory queueConnectionFactory = null;
QueueConnection queueConnection = null;
QueueSession queueSession = null;
Queue queue = null;
QueueSender queueSender = null;
TextMessage message = null;
int noMessages = 5;
* Set the environment for a connection to the OC4J instance
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "oracle.j2ee.rmi.RMIInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "oc4jadmin");
env.put(Context.SECURITY_CREDENTIALS, "mypass");
env.put(Context.PROVIDER_URL,"ormi://myserver.company.com:12402"); //12402 is the rmi port
* Set the Context Object.
* Lookup the Queue Connection Factory.
* Lookup the JMS Destination.
try
jndiContext = new InitialContext(env);
queueConnectionFactory =
(QueueConnectionFactory) jndiContext.lookup(queueConnectionFactoryName);
queue = (Queue) jndiContext.lookup(queueName);
catch (NamingException e)
System.out.println("JNDI lookup failed: " + e.toString());
System.exit(1);
* Create connection.
* Create session from connection.
* Create sender.
* Create text message.
* Send messages.
* Send non text message to end text messages.
* Close connection.
try
queueConnection = queueConnectionFactory.createQueueConnection();
queueSession =
queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
queueSender = queueSession.createSender(queue);
message = queueSession.createTextMessage();
for (int i = 0; i < noMessages; i++)
message.setText("Message " + (i + 1));
System.out.println("Producing message: " + message.getText());
queueSender.send(message);
queueSender.send(queueSession.createBytesMessage());
catch (JMSException e)
System.out.println("Exception occurred: " + e.toString());
finally
if (queueConnection != null)
try
queueConnection.close();
catch (JMSException e)
System.out.println("Closing error: " + e.toString());
But when the SOA Suite is remote, I am struggling to get the settings correct
Till now, here is what I have figured out from looking at blogs/tars etc on the Net:
1. I need to use ApplicationClientInitialContextFactory instead of RMIInitialContextFactory (http://download.oracle.com/docs/cd/E14101_01/doc.1013/e13975/jndi.htm)
2. The project should have a META-INF/application-client.xml file, which may be dummy (http://www.wever.org/java/space/Oracle/JmsTar1). Question is, my code is there in a single absolutely standalone code..how I can use this application-client.xml and where it has to be placed.
Errors:
When trying to run exact same code on local server that tries to enqueue JMS on remotee serverer
Exception occurred: javax.jms.JMSException: Unable to create a connection to "xxxxxxx.yyyyyy01.dev.com/10.42.456.11:12,602" as user "null".
Any help is greatly welcome.
As an exercise, I copied this complete code on the server and then ran locally using a telnet client...it worked. So the problem is coming when accessing the server remotely.
Rgds,
Amit

1. I need to use ApplicationClientInitialContextFactory instead of RMIInitialContextFactoryNot necessarily.
2. The project should have a META-INF/application-client.xml fileThat's only necessary if going the ApplicationClientInitialContextFactory route.
There are two types of JMS client applications you can write -- a pure/plain Java app, and an "AppClient". That first is your everyday run-of-the-mill Java application, nothing special. That latter is a special, complicated beast that tries to act as a part of the whole client/server/J2EE architecture which provides you with a semi-managed environment. Either can be made to work, but if all you need is JMS access (using plain OC4J JMS factory/queue names and not JMS Connector names), then the first is easier to get working (and performs a tiny bit better as well due to being a lighter-weight solution).
I think the problem you are having might be: When you use the plain Java client solution, you do not have any type of management, and that includes user management. With no user management (and if the JMS server is not configured to allow anonymous connections) you need to include the username and password in the call to createConnection. (I think it may be that this is actually true in the AppClient case as well -- I avoid using the AppClient model as much as possible so my memory there is weaker.)
If you prefer to go the AppClient route, I would point you to a demo I wrote which had a functioning example, but Oracle seems to have removed it (and all of the 10.1.3 demos?) from OTN. :-(
Hmm, it seems to still be available on the wayback machine:
http://web.archive.org/web/20061021064014/www.oracle.com/technology/tech/java/oc4j/1013/how_to/index.html
(Just look down the page for "With OEMS JMS (In-Memory and File-Based)" -- there is an .html document with info, and there is a .zip file with source code.)
Question is, my code is there in a single absolutely standalone code..how I can use this application-client.xml and where it has to be placed.The app client in my demo had the following directory structure:
myjavaclient.class
jndi.properties
META-INF\MANIFEST.MF
META-INF\application-client.xml
META-INF\orion-application-client.xml
When you use ApplicationClientInitialContextFactory I think it just looks under .\META-INF for the .xml files.
-Jeff

Create/close QueueSession, QueueConnection

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