Problemas no deploy de Message Driven Bean - SJAS

Estou usando o Application Server da Sun (SJAS) versão 8.1, e estou tento problemas para fazer o deploy de um MDB. Pesquisando no google e em fóruns diversos, não encontrei uma solução. Pensei ser algum detalhe de configuração ou algo assim, mas não consegui descobrir a causa do erro.

O código do Message Driven Bean é:

public class DefaultMessageConsumer implements MessageDrivenBean, MessageListener {

    private MessageDrivenContext ctx;

    public void ejbCreate () throws EJBException {
	System.out.println("Criando DefaultMessageConsumer");
    }

    public void ejbRemove() throws EJBException {
	System.out.println("Removendo DefaultMessageConsumer");
    }

    public void setMessageDrivenContext(MessageDrivenContext context) throws EJBException {
	this.ctx = context;
    }

    public void onMessage(Message msg) {
	TextMessage textMsg = null;

	try {
	    if (msg instanceof TextMessage) {
		textMsg = (TextMessage) msg;
		System.out.println("Mensagem recebida: " + textMsg.getText());
	    } else {
		System.out.println("Mensagem desconhecida");
	    }
	} catch (JMSException e) {
	    ctx.setRollbackOnly();
	}
    }
}

Criei também o ejb-jar.xml:

<?xml version="1.0" encoding="UTF-8"?>

<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
	http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"
	version="2.1">

	<enterprise-beans>
		<message-driven>
			<ejb-name>DefaultMessageConsumer</ejb-name>

<ejb-class>br.com.serasa.mdb.DefaultMessageConsumer</ejb-class>
<messaging-type>javax.jms.MessageListener</messaging-type>

			<!-- Tipo de transação -->
			<transaction-type>Container</transaction-type>
<message-destination-type>javax.jms.Queue</message-destination-type>
<message-destination-link>fila</message-destination-link>

			<activation-config>
				<activation-config-property>
<activation-config-property-name>DestinationType</activation-config-property-name>
<activation-config-property-value>javax.jms.Queue</activation-config-property-value>
				</activation-config-property>
				<activation-config-property>
<activation-config-property-name>Destination</activation-config-property-name>
<activation-config-property-value>fila</activation-config-property-value>
				</activation-config-property>
				<activation-config-property>
<activation-config-property-name>AcknowledgeMode</activation-config-property-name>
<activation-config-property-value>Auto-acknowledge</activation-config-property-value>
				</activation-config-property>
			</activation-config>

			<message-destination-ref>
				<message-destination-ref-name>jms/fila</message-destination-ref-name>
				<message-destination-type>javax.jms.Queue</message-destination-type>
				<message-destination-usage>Consumes</message-destination-usage>
				<message-destination-link>fila</message-destination-link>
			</message-destination-ref>
		</message-driven>
	</enterprise-beans>

	<assembly-descriptor>
		<message-destination>
			<display-name>Destination for DefaultMessageConsumer</display-name>
		<message-destination-name>fila</message-destination-name>
		</message-destination>
	</assembly-descriptor>
</ejb-jar>

E o sun-ejb-jar.xml:

<?xml version="1.0" encoding="UTF-8"?>

<sun-ejb-jar>
	<enterprise-beans>
		<ejb>
			<ejb-name>DefaultMessageConsumer</ejb-name>
			<jndi-name>jms/fila</jndi-name>

			<message-destination-ref>
<message-destination-ref-name>fila</message-destination-ref-name>
				<jndi-name>jms/fila</jndi-name>
			</message-destination-ref>
			<mdb-connection-factory>
				<jndi-name>jms/QueueFactory</jndi-name>
			</mdb-connection-factory>
		</ejb>

		<message-destination>
<message-destination-name>fila</message-destination-name>
			<jndi-name>jms/fila</jndi-name>
		</message-destination>
	</enterprise-beans>
</sun-ejb-jar>

No application server criei uma QueueConnectionFactory com jndiName
jms/QueueFactory, e uma fila com jndiName jms/fila. Criei também uma physical destination (li na documentação que é necessário) do tipo Queue.

Empacotei tudo num jar e ao fazer deploy, aparece várias vezes a mensagem:

MQRA:EC:cNDMC():createConnection failed:[SET_CLIENTID_REPLY(51)] [C4036]: A server error occurred. : shared clientID's not supported w/o cluster user=guest, broker=cddesenv:7676(49906)

E logo depois o stack trace:

javax.resource.NotSupportedException: MQRA-endpointActivation:Error:creatMessageConsumer failed:aborting
        at com.sun.messaging.jms.ra.ResourceAdapter.endpointActivation(ResourceAdapter.java:271)
        at com.sun.enterprise.connectors.inflow.ConnectorMessageBeanClient.setup(ConnectorMessageBeanClient.java:221)
        at com.sun.ejb.containers.MessageBeanContainer.<init>(MessageBeanContainer.java:187)
        at com.sun.ejb.containers.ContainerFactoryImpl.createContainer(ContainerFactoryImpl.java:221)
        at com.sun.enterprise.server.AbstractLoader.loadEjbs(AbstractLoader.java:477)
        at com.sun.enterprise.server.EJBModuleLoader.load(EJBModuleLoader.java:93)
        at com.sun.enterprise.server.StandAloneEJBModulesManager.moduleDeployed(StandAloneEJBModulesManager.java:201)
        at com.sun.enterprise.server.StandAloneEJBModulesManager.moduleDeployed(StandAloneEJBModulesManager.java:156)
        at com.sun.enterprise.server.StandAloneEJBModulesManager.moduleDeployed(StandAloneEJBModulesManager.java:388)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.invokeModuleDeployEventListener(AdminEventMulticaster.java:918)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.handleModuleDeployEvent(AdminEventMulticaster.java:905)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.processEvent(AdminEventMulticaster.java:427)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.multicastEvent(AdminEventMulticaster.java:139)
        at com.sun.enterprise.ee.admin.mbeans.ServerRuntimeMBean.forwardEvent(ServerRuntimeMBean.java:64)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:302)
        at com.sun.enterprise.admin.runtime.BaseRuntimeMBean.invoke(BaseRuntimeMBean.java:383)
        at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(DynamicMetaDataImpl.java:213)
        at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(MetaDataImpl.java:220)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:815)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:784)
        at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1408)
        at javax.management.remote.rmi.RMIConnectionImpl.access$100(RMIConnectionImpl.java:81)
        at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1245)
        at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1341)
        at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:782)
        at sun.reflect.GeneratedMethodAccessor110.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
        at sun.rmi.transport.Transport$1.run(Transport.java:153)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
        at com.sun.messaging.jms.ra.EndpointConsumer.createNonDurableMessageConsumer(EndpointConsumer.java:541)
        at com.sun.messaging.jms.ra.EndpointConsumer.createMessageConsumer(EndpointConsumer.java:216)
        at com.sun.messaging.jms.ra.ResourceAdapter.endpointActivation(ResourceAdapter.java:266)
        ... 38 more

Alguma idéia?