Sun Java System Application Server Platform Edition 8.2 Developer's Guide

onMessage Runtime Exception

Message-driven beans, like other well-behaved MessageListeners, should not, in general, throw runtime exceptions. If a message-driven bean’s onMessage method encounters a system-level exception or error that does not allow the method to successfully complete, the Enterprise JavaBeans Specification, v2.1 provides the following guidelines:

Under container-managed transaction demarcation, upon receiving a runtime exception from a message-driven bean’s onMessage method, the container rolls back the container-started transaction and the message is redelivered. This is because the message delivery itself is part of the container-started transaction. By default, the Application Server container closes the container’s connection to the JMS provider when the first runtime exception is received from a message-driven bean instance’s onMessage method. This avoids potential message redelivery looping and protects server resources if the message-driven bean’s onMessage method continues misbehaving. To change this default container behavior, use the cmt-max-runtime-exceptions property of the mdb-container element in the domain.xml file.

The cmt-max-runtime-exceptions property specifies the maximum number of runtime exceptions allowed from a message-driven bean’s onMessage method before the container starts to close the container’s connection to the message source. By default this value is 1; -1 disables this container protection.

A message-driven bean’s onMessage method can use the javax.jms.Message getJMSRedelivered method to check whether a received message is a redelivered message.

Note –

The cmt-max-runtime-exceptions property might be deprecated in the future.