Automate Monitoring With Watches
Watches provide a way to automate tasks when certain events occur. An event can be a message, a Licensed Internal Code (LIC) log (also known as a VLOG), or a Problem Activity Log (PAL) entry. The primary motivation for adding watches to the operating system was to provide a way for improved diagnostics, but watches, particularly message watches, can be used for automated monitoring of system conditions. Watches provide a way to be notified programmatically when the event occurs so immediate action can be taken. Additionally, watches can be very useful at detecting situations that occur intermittently since the actions can be automated.
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