What does RAC stand for in Oracle?

This question seeks to gauge your comprehension of the concept of "Real Application Clusters (RAC)" in Oracle. It is typically a knowledge-based inquiry, often encountered when applying for positions that involve working with Oracle databases. The interviewer is interested in assessing your familiarity with RAC and its functions. In your answer, you might want to cover its purpose, features, and advantages.

RAC, or Real Application Clusters, is a feature of Oracle's database system that enables a database to be set up on several servers. This setup ensures high availability, allowing the database to keep running on other servers if one server fails. Additionally, it facilitates load balancing, distributing the database workload uniformly across multiple servers to avoid overloading any single node. This aspect of RAC also enhances scalability, making it simple to add resources to handle growing traffic and data.

Oracle's Real Application Clusters (RAC) is a clustering technology that enables several interconnected computers or servers to operate Oracle as though they are a single system from the users' perspective. This enhances database availability by removing single points of failure and improves performance through workload distribution. With RAC, an application can accommodate a greater number of users and larger data volumes by adding additional servers to the cluster. What distinguishes RAC from other solutions is its ability to keep all servers in the cluster informed of each other’s transactions, ensuring the preservation of data integrity.