1. Install EAP 6.4 and A-MQ 6.3 (build 254) 2. In EAP 6.4, deploy the resource adapter from A-MQ 6.3 into standalone/deployments. 3. Add the resource adapter config as attached 4. Start broker and EAP 5. Watch for EOFException messages in the broker log. 6. Replace the A-MQ 6.3 resource adapter with the one from A-MQ 6.2-084. Note that the messages are rare, if present at all It doesn't matter to the problem whether I use failover: or tcp: URLs for the broker, but with failover: I can see the connections being recycled in the EAP log. Note that the frequency of the EOFException is an exact match for the sum of the following two EAP configuration settings. They are not included by default, but can be added to make the problem easier to see. <system-properties> <property name= "RecoveryEnvironmentBean.periodicRecoveryPeriod" value= "20" /> <property name= "RecoveryEnvironmentBean.recoveryBackoffPeriod" value= "2" /> </system-properties> <resource-adapter id= "org.apache.activemq.ra" > <archive> activemq-rar.rar </archive> <transaction-support>XATransaction</transaction-support> <config-property name= "ServerUrl" > failover:(tcp: //localhost:61616)?jms.rmIdFromConnectionId= false </config-property> <config-property name= "UserName" > admin </config-property> <config-property name= "Password" > admin </config-property> <connection-definitions> <connection-definition class- name= "org.apache.activemq.ra.ActiveMQManagedConnectionFactory" jndi-name= "java:/ConnectionFactory" enabled= " true " use-java-context= " true " pool-name= "ConnectionFactory" > <xa-pool> <min-pool-size>1</min-pool-size> <max-pool-size>1</max-pool-size> <prefill> false </prefill> <is-same-rm-override> true </is-same-rm-override> </xa-pool> <recovery> <recover-credential> <user-name>admin</user-name> <password>admin</password> </recover-credential> </recovery> </connection-definition> </connection-definitions> <admin-objects> <admin-object class- name= "org.apache.activemq.command.ActiveMQQueue" jndi-name= "queue/testqueue" use-java-context= " true " pool-name= "test_queue" > <config-property name= "PhysicalName" > testQueue </config-property> </admin-object> </admin-objects> </resource-adapter>