Spring Boot applications will crash while booting on this error:

2018-11-07 12:16:56.684  WARN 1 --- [nio-8080-exec-6] o.s.b.actuate.health.JmsHealthIndicator  : Health check failed
javax.jms.JMSException: Could not create Transport. Reason: java.lang.IllegalArgumentException: Invalid connect parameters: {jms.xaAckMode=1}

The error is triggered by a combination of SB Actuator, XA resource of AMQ6.3 R9 and new behavior of AMQ client which was added by ENTMQ-2206. To make our test application work again I have to apply changes from ENTESB-9511 so I add jms.xaAckMode parameter into spring.activemq.broker-url.

Unfortunately, new behavior of AMQ client broke JmsHealthIndicator because this parameter is valid only for XA resource and health check uses non-xa resource to test a connection.