Oracle Real application Clusters (rac) is a powerful Database architecture that enables high availability, scalability, and performance for oracle databases. In this article, we will guide you through the process of installing RAC on Oracle linux.
Before proceeding with the installation, you need to ensure that your system meets the following prerequisites:
Oracle Linux 7.0 or higher
Oracle Grid Infrastructure 12c
Oracle Database 12c
At least two virtual machines or physical servers with shared storage
If you don't have Oracle Grid Infrastructure and Oracle Database installed, you can download them from the Oracle website.
Step-by-Step Installation Guide
Follow the steps below to install RAC on Oracle Linux:
Step 1: Install Oracle Grid Infrastructure
The first step is to install Oracle Grid Infrastructure, which is required for RAC. Follow these steps to install it:
extract the installation files and run the installer as the root user.
Choose the "Install and configure Grid Infrastructure for a Cluster" option.
Follow the prompts to complete the installation, providing the necessary information such as IP addresses and passwords.
After the installation is completed, verify that the Grid Infrastructure components are up and running.
Step 2: Install Oracle Database
The next step is to install Oracle Database, which will be used by RAC. Follow these steps to install it:
Extract the installation files and run the installer as the root user.
Choose the "Install Database Software Only" option.
Follow the prompts to complete the installation, providing the necessary information such as installation directory and passwords.
After the installation is completed, verify that the database components are up and running.
Step 3: Configure the Network
After you have installed Grid Infrastructure and Database, you need to configure the network. Follow these steps to configure it:
Create a virtual IP (VIP) address that will be used for database connections.
Add the VIP address to the virtual machine or physical server network interfaces.
Configure the listener for the database to listen on the VIP address.
Verify that the database is Accessible through the VIP address.
Step 4: Create the RAC Database
The final step is to create the RAC database. Follow these steps to create it:
Use the Database Configuration Assistant (dbca) to create the RAC database.
Choose the RAC option and follow the prompts to specify the database name, instance names, and other parameters.
After the database is created, verify that it is up and running on both nodes of the cluster.
Installing RAC on Oracle Linux requires some planning and configuration, but the benefits of high availability, scalability, and performance are well worth the effort. By following the steps outlined in this article, you can successfully install and configure RAC on your Oracle Linux system.