Message descriptor (MQMD) in event messages

The message descriptor for an event message contains information that can be used by a system monitoring application, such as:

In particular, the information in the descriptor informs a system management application that the message type is MQMT_DATAGRAM, and the message format is MQFMT_EVENT.

In an event message, many of these fields contain fixed data, which is supplied by the queue manager that generated the message. The fields that make up the MQMD structure are described in Event message MQMD (message descriptor) below. The MQMD also specifies the name of the queue manager (truncated to 28 characters) that put the message, and the date and time when the event message was put on the event queue.