How to Provide Sudo Privilege to Oracle User or any other OS user? (Or in otherwords, how to include any OS user in Sudoers List?)

In this article, I will guide you on how to add Oracle OS User or any other OS user to Sudoers list? In otherwords, I will guide you on how to provide Sudo privilege for an OS user? Identify whether the User has Sudo Privilege or not? First identify ...