Ad-hoc Monitoring
Ad-hoc monitoring allows you to analyze the SQL statements currently running without taking consideration of start, until, and duration time.
To start ad-hoc monitoring
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Mark an existing Collector
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Right-click and select Ad-hoc Monitor to start monitoring.
To stop ad-hoc monitoring
Click 
Warning: If you have already monitored the Collector, ad-hoc monitoring erases any existing information.