Oracle Corporation provides a free version of Oracle Database, known as Oracle Database Express Edition (XE), which can be downloaded and used on Linux systems. Oracle XE is a great way to get started with Oracle on Linux, as it provides a fully functional database management system that can be used for development, testing, and production environments.
Next, update your hostname in /etc/hostname and ensure it resolves in /etc/hosts . download oracle for linux
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Oracle Linux is an open-source, enterprise-class distribution that is 100% application binary compatible with Red Hat Enterprise Linux (RHEL). It is completely free to download, use, and distribute. Oracle Corporation provides a free version of Oracle