Correct Answer: Oracle Real Application Clusters (RAC) is a software component we can add to a high-availability solution that enables users on multiple machines to access a single database with increased performance RAC comprises two or more Oracle database instances running on two or more clustered machines and accessing a shared storage device via cluster technology To support this architecture, the machines that host the database instances are linked by a high-speed interconnect to form the cluster Oracle RAC offers features in the following areas: - Scalability - Availability - Load balancing - Failover
