In oracle rac, each oracle instance must run. It's a high availability solution for oracle db. Oracle real application clusters (rac) is an option [1] for the oracle database software produced by oracle corporation and introduced in 2001 with oracle9i.
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It provides software for clustering and high. At its core, oracle rac allows multiple oracle instances (each running on a separate server node) to access a single shared database. Multiple nodes work together to process workloads, sharing the database resources efficiently.
Here two or more nodes (instances) are clustered as a single db by using shared disks.
Rac allows multiple servers, or nodes, to work together as a single system, accessing. Rac stands for real application clusters. This setup enables both load balancing and high. Each node in a rac environment is an independent server running an oracle database instance.
