I read the linked issue too, and as I understand that was to do with NFS. However, I am getting very similar issue when using shared JDBC store (MySQL).
Error is slightly different though: I have traced it to this call here in the FailbackChecker: Seems the default connection is empty or what? Attaching the configurations of master and slave: broker_node1.xml <http://activemq.2283324.n4.nabble.com/file/t379605/broker_node1.xml> broker_node2.xml <http://activemq.2283324.n4.nabble.com/file/t379605/broker_node2.xml> Any help appreciated. -- Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html