Oracle RAC Setup: Clustering & Load Balancing

To implement cluster and load balancing functionalities in Oracle database, you need to follow these steps for setting up RAC (Real Application Clusters).

1. Ensure that all nodes have access to the shared storage. RAC requires shared storage to store database files, so it is necessary to ensure that all nodes can access this storage.
2. Install Oracle database software on all nodes. Ensure that the database instance can successfully start on each node.
3. Set up a clustered database by using the Oracle Database Configuration Assistant (DBCA) tool, making sure to select the RAC option during the creation process.
4. Set up the listener. Configure a listener on each node so that clients can connect to the database.
5. Set up load balancing. Utilize Oracle Clusterware to configure load balancing functionality, ensuring that all database instances on each node can evenly process requests.
6. Test the cluster and load balancing. Verify that the cluster and load balancing features are working properly by running queries on multiple nodes.

By following the above steps, you can use RAC to achieve clustering and load balancing functionalities. Please note that configuring RAC requires a certain level of expertise and experience, it is recommended to carefully read the official Oracle documentation and refer to relevant best practices before proceeding with the configuration.