Abnormal server outage, After the restart, the client, c + + c + + components are even not on ActiveMQ, the log screen printing, found to be stuck in the start (), Set the timeout with largest number of reconnection, turn off the ActiveMQ service, not stuck in the start (), ActiveMQ version is 5.7 x, jvav JDK 1.8 Change the ActiveMQ version for 5.12.1 after service hung up after seconds, Also encountered the same problem before, reshipment server system,