Real Application Cluster (RAC) is a component of the Oracle9i database product that allows a database to be installed across multiple servers. According to Oracle, RAC's shared disk method of clustering databases: increases scalability because servers can easily be added or subtracted to meet current needs, lowers costs because companies don't have to buy high-end servers, and improves availability because if one server fails, another can assume its workload. RAC's shared disk architecture is an unusual approach to database clustering compared to competing database products.
For More Information:
Expert response: Benefits, costs of running RAC
Best Web Links: RAC Configuration
White paper: An overview of Oracle9i Real Application Clusters
Do you have an idea for a quiz question topic? Let us know!
This was first published in August 2003