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Split Brain Syndrome Basic Concept in Oracle RAC

in Oracle Database Appliance (MOSC) 1 comment

In Oracle RAC each node in the cluster is interconnected through a private interconnect. End-users connect to clusters through a public network. When a node is physically up and running and database instances are also running fine, but private interconnect fails between two or more nodes and an instance member fails to connect or ping to one another nodes, then the following scenario may occur.

 

è Instance think that the other instance that is unable to connect is down because of lack of connection between each other

è Meanwhile, both instances start working independently.

è Each RAC node can accept user connections and work independently.

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