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A monitor definition tells CA Mainframe Application Tuner which program to monitor. It specifies details about the job step and its programs, transactions, 4GL languages, or external databases. You create a monitor definition by specifying a set of monitoring criteria. You invoke a monitor definition to collect a set of sample data for analysis.
CA Mainframe Application Tuner maintains monitor definitions across sessions. This feature allows you to reuse the same monitor definition when you want to repeat a certain analysis after making changes to the program code based on a previous analysis. You can examine the impact of your changes by using this iterative approach to performance tuning. For each subsequent invocation of a monitor definition, you do not need to respecify data which ensures that CA Mainframe Application Tuner uses the same monitoring criteria.
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