This process has been tested on Ubuntu desktop 16.04 and 16.04.4. It should work for other versions too, but it is not guaranteed. SO first thing in this installation process is to download the Oracle 12c zip file from its website Oracle . This file will be around 3 GB so it's going to take some time. The next thing would be to download the mandela.sh file(courtesy of Howard Rogers). This file will create a new user in your system, download all necessary packages and change settings so that Oracle can run. It will take more than an hour for this to complete the execution so be patient. Give the name of the user you want to run Oracle on and his password(remember these). When this is done restart and login to the new user. The new user is not sudo user. We will give the user root privileges when installation is done. Now extract the installation file which we have downloaded at starting of the process. cd database/runInstaller The above command will start the installation of...