Format of accounting messages

Accounting messages are constructed as a set of PCF fields that consist of the following:

A message descriptor

An accounting message MQMD (message descriptor)

Accounting message data

• An accounting message MQCFH (PCF header)

• Accounting message data that is always returned

• Accounting message data that is returned if available

The accounting message MQCFH (PCF header) contains information about the application, and the interval for which the accounting data was recorded.

Accounting message data is comprised of PCF parameters that store the accounting information. The content of accounting messages depends on the message category as follows:

MQI accounting message

MQI accounting message data consists of a number of PCF parameters, but no PCF groups.

The parameters contained in MQI accounting message data are described in MQI accounting message data.

Queue accounting message

Queue accounting message data consists of a number of PCF parameters, and between one and one hundred QAccountingData PCF groups.

There is one QAccountingData PCF group for every queue that had accounting data collected. If an application accesses more than 100 queues, multiple accounting messages are generated. Each message has the SeqNumber in the MQCFH (PCF header) updated accordingly, and the last message in the sequence has the Control parameter in the MQCFH specified as

MQCFC_LAST.

The parameters contained in queue accounting message data are described in Queue accounting message data.