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State the use of FAN events in case of a cluster configuration change?

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in RAC by ACE (20,920 points)

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by ACE (20,920 points)

During times of cluster configuration changes,Oracle RAC high availability framework publishes a FAN event immediately when a state change occurs in the cluster.So applications can receive FAN events and react immediately.This prevents applications from polling database and detecting a problem after such a state change.

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