EBS constantly increases the demand for scalability, availability, and performance related to the database. The major benefits of an Oracle RAC database system are scalability and availability. An RAC database system provides excellent scalability options for the users. As the need arises to resolve the resource crunch, the user can expand or add more nodes in the cluster, increasing the memory available. This enhances the total database engine computing power when the need for high performance appears.
With the additional nodes and instances in the database cluster, the system is able to accommodate the demand. Scale out, or horizontal scalability, is generally easy to accomplish with the addition of extra nodes. Once the cluster is physically expanded, it is easy to create an additional Oracle instance within the realm of the Oracle RAC cluster. Adding an additional Oracle RAC instance enables the user to support a large number of concurrent users. Any instance...