Do I really need two connection pools when using two durable subscriptions?

Question

I have a Spring daemon which takes messages from two different topics and stores them in a database.
What irritates me is that I can't get it to work with a single connection pool. I get a message that I can't create durable subscriptions without a unique client id on the connection. It's not enough that the client id be set on the listener container, I have to set it on the underlying ConnectionFactory. I though this was some kind of glitch with openMQ but activeMQ gives me exactly the same behaviour.
This is the important part of the config
    <bean id="realCon" class="org.apache.activemq.ActiveMQConnectionFactory" p:brokerURL="discovery:(multicast://default?group=live)"
    p:clientID="DB_RECORD_CLIENT"/>
    <bean id="realCon2" class="org.apache.activemq.ActiveMQConnectionFactory" p:brokerURL="discovery:(multicast://default?group=live)"
    p:clientID="DB_LOG_CLIENT"/>
    <bean id="jmsConnectionFactory" class="org.springframework.jms.connection.CachingConnectionFactory"
    p:targetConnectionFactory-ref="realCon"/>
    <bean id="jmsConnectionFactory2" class="org.springframework.jms.connection.CachingConnectionFactory"
    p:targetConnectionFactory-ref="realCon2"/>
    <bean id="ocsMessageListener" class="com.cc.mer.ordercatcher.MessageReceived"/>
    <bean id="logMessageListener" class="com.cc.mer.ordercatcher.LogMessageReceived"/>
    <jms:listener-container
        connection-factory="jmsConnectionFactory"
        destination-type="durableTopic"
        transaction-manager="transactionManager"
        acknowledge="transacted"
        >
        <jms:listener ref="ocsMessageListener" destination="OCS_RELAYED"
                      subscription="ocs.db.recording" />
    </jms:listener-container>
    <jms:listener-container
        connection-factory="jmsConnectionFactory2"
        destination-type="durableTopic"
        transaction-manager="transactionManager"
        acknowledge="transacted"
        >
        <jms:listener ref="logMessageListener" destination="OCS_LOG"
                      subscription="ocs.log.recording" />
    </jms:listener-container>

Answer 1

Thank you all for your replies.
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