Problem determination with WebSphere MQ clients

An MQI client application receives MQRC_* reason codes in the same way as non-client MQI applications. However, there are additional reason codes for error conditions associated with clients. For example:

The most common time for errors to occur is when an application issues an MQCONN and receives the response MQRC_Q_MQR_NOT_AVAILABLE. An error message, written to the client log file, explains the cause of the error. Messages might also be logged at the server, depending on the nature of the failure.