Oracle rac 12c

Oracle RAC (Real Application Clusters) 12c is a high-availability solution that allows multiple instances of an Oracle database to run on different servers in a cluster. This provides redundancy and scalability for mission-critical applications.

The key features of Oracle RAC 12c include:

1. Clusterware: This provides the infrastructure for managing the cluster, including cluster membership, resource management, and failure detection and recovery.

2. Automatic workload management: This enables load balancing across the cluster, so that each node is utilized evenly.

3. Transparent application failover: This allows applications to continue running even if a node fails, by automatically switching to another node in the cluster.

4. Online patching and rolling upgrades: This allows patches and upgrades to be applied to the cluster without any downtime.

5. Global cache coordination: This ensures that data is consistent across all nodes in the cluster, so that each node can access the same data.

Overall, Oracle RAC 12c provides a highly available and scalable solution for enterprise-level applications.