Only allowed one session per connection. See the J2EE spec, e.g. J2EE1.4 Section 6.6

[andystone]

Can anyone please help me with the above exception.

I have defined a SEAM component that needs to write to JMS:

@Name("queuer")
public class MyQueuer {

  @In
  private transient QueueSender mySender;

  @In
  private transient QueueSession queueSession;

  public void send(final Object pObject) {
    try {
      final ObjectMessage message = queueSession.createObjectMessage(pObject);
      mySender.send(message);
    } catch (JMSException e) {
      e.printStackTrace();
    }
  }

}

This works most of the time, but when the application gets busy, starts raising the exception given in the title.

I am using SEAM 2.2.0.GA

The full exception is:

Caused by: org.jboss.seam.InstantiationException: Could not instantiate Seam component: org.jboss.seam.jms.queueSession
     at org.jboss.seam.Component.newInstance(Component.java:2144)
     at org.jboss.seam.Component.getInstance(Component.java:2021)
     at org.jboss.seam.Component.getInstance(Component.java:1983)
     at org.jboss.seam.Component.getInstance(Component.java:1977)
     at org.jboss.seam.Component.getInstance(Component.java:1957)
     at org.jboss.seam.Component.getInstance(Component.java:1952)
     at org.jboss.seam.jms.QueueSession.instance(QueueSession.java:55)
     at org.jboss.seam.jms.ManagedQueueSender.create(ManagedQueueSender.java:51)
     at sun.reflect.GeneratedMethodAccessor602.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
     at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144)
     at org.jboss.seam.Component.callComponentMethod(Component.java:2249)
     at org.jboss.seam.Component.callCreateMethod(Component.java:2172)
     at org.jboss.seam.Component.newInstance(Component.java:2132)
     ... 119 more
Caused by: java.lang.RuntimeException: exception invoking: create
     at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:154)
     at org.jboss.seam.Component.callComponentMethod(Component.java:2249)
     at org.jboss.seam.Component.callCreateMethod(Component.java:2172)
     at org.jboss.seam.Component.newInstance(Component.java:2132)
     ... 134 more
Caused by: javax.jms.JMSException: Could not create a session: javax.jms.IllegalStateException: Only allowed one session per connection. See the J2EE spec, e.g. J2EE1.4 Section 6.6
     at org.jboss.resource.adapter.jms.JmsSessionFactoryImpl.allocateConnection(JmsSessionFactoryImpl.java:426)
     at org.jboss.resource.adapter.jms.JmsSessionFactoryImpl.createQueueSession(JmsSessionFactoryImpl.java:145)
     at org.jboss.seam.jms.QueueSession.create(QueueSession.java:38)
     at sun.reflect.GeneratedMethodAccessor603.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
     at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144)
     ... 137 more

The relevant configuration in components.xml is:

  <jms:managed-queue-sender name="mySender"
                            auto-create="true"
                            queue-jndi-name="/queue/myQueue"/>

  <jms:queue-connection queue-connection-factory-jndi-name="java:/JmsXA" />

Any help would be much appreciated.

Cheers,

[sdnakhla]

Did you ever get an answer on this?  I'm running into the same problem in my application when making calls under load.