Application activity trace message reference

Use this page to obtain an overview of the format of application activity trace messages and the information returned in these messages

Application activity trace messages are standard IBM® MQ messages containing a message descriptor and message data. The message data contains information about the MQI operations performed by IBM MQ applications, or information about the activities occurring in an IBM MQ system.

Message descriptor

• An MQMD structure

Message data

• A PCF header (MQCFH)
• Application activity trace message data that is always returned
• Application activity trace message data that is operation-specific