Scalable operation
In scalable operation with Oracle RAC, Oracle is operated on all the nodes. The clients can access to the database regardless of which node they are connected to.
Standby operation
In standby operation, a cluster system consists of an operating node and standby nodes. On the operating node, the resources such as Oracle applications, a logical IP address and shared disks are active. On the standby node, these resources are inactive. In the event of a failure, userApplication is switched to the standby node, and the resources in this standby node become activated. Then, the client can connect itself to the operating node using the logical IP address without changing any settings.
