Your Informatica PowerCenter session (e. g. PowerExchange for JMS session) talking to JMS providers may fail because of various JNDI/JMS connectivity issue. The JMSConnectTest utility is a Java based program which can be used to test JNDI/JMS connectivity with any of the JMS providers (such as IBM  WebSphere MQ, IBM WebSphere Application Server, Apache AcitveMQ, etc.). This utility will help you ensure that the connection works outside of Informatica.You can download this listing as part of the Debugging Tools bundle.