Event raised by an application - Oracle DBA

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• Nirja Shah   -Posted on 25 Aug 15
  -An event is a message sent by one application or system process to another to indicate that some action or occurrence has been detected.
  -An event is raised (sent) by one application or process, and consumed (received) by one or more applications or processes.
  
  -There are two kinds of events in the Scheduler:
  
  1.Events raised by the Scheduler - The Scheduler can raise an event to indicate state changes that occur within the Scheduler itself.
  -For example, the Scheduler can raise an event when a job starts, when a job completes, when a job exceeds its allotted run time, and so on.
  -The consumer of the event is an application that takes some action in response to the event.
  
  2. Events raised by an application - An application can raise an event to be consumed by the Scheduler.
  -The Scheduler reacts to the event by starting a job. You can create a schedule that references an event instead of containing date, time, and recurrence information.
  -If a job is given such a schedule (an event schedule), the job runs when the event is raised.

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