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Where Can We Apply Fan Up And Down Events? |
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Answer» FAN UP and FAN DOWN EVENTS can be applied to instances, services and NODES. STATE the use of FAN events in case of a cluster configuration change? 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. FAN UP and FAN DOWN events can be applied to instances, services and nodes. State the use of FAN events in case of a cluster configuration change? 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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