Setting ACTVTRC to control collection of activity trace information
Use the queue manager attribute ACTVTRC to control the collection of MQI application activity trace information
About this task
Application activity trace messages are generated only for connections that begin after
application activity trace is enabled. The ACTVTRC parameter can have the
following values:
- ON
- API activity trace collection is switched on
- OFF
- API activity trace collection is switched off
Note: The ACTVTRC setting can be overridden by the queue manager
ACTVCONO parameter. If you set the ACTVCONO parameter to
ENABLED, then the ACTVTRC setting can be overridden for a
given connection using the Options field in the MQCNO
structure. See Setting MQCONNX options to control collection of activity trace information.
Example
To change the value of the ACTVTRC parameter, you use the MQSC command
ALTER QMGR. For example, to enable MQI application activity trace information
collection use the following MQSC command:
ALTER QMGR ACTVTRC(ON)
What to do next
The simplest way to view the contents of application activity trace messages is to use the amqsact sample program.
Enabling application activity trace can affect performance. The overhead can be reduced by tuning the ActivityCount and the ActivityInterval settings. See Tuning the performance impact of application activity trace.