Fast Application Notification -FAN
FAN is an event notification mechanism to the Oracle clients. Instead of letting the clients to detect a failure of a cluster component, the clusterware itself notifies the clients upon a component failure or status changes etc. It enables client applications to quickly react to a situation rather than waiting and timing out.
Along with the cluster status change notification, it also notifies the LBA information to the clients. This helps the middle tier applications with connection pools to dynamically load balance the connections to the best serving instance.
FAN is an event notification mechanism to the Oracle clients. Instead of letting the clients to detect a failure of a cluster component, the clusterware itself notifies the clients upon a component failure or status changes etc. It enables client applications to quickly react to a situation rather than waiting and timing out.
Along with the cluster status change notification, it also notifies the LBA information to the clients. This helps the middle tier applications with connection pools to dynamically load balance the connections to the best serving instance.
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