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Installing Oracle 12c in Ubuntu

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 the Oracle. It will run some prechecks, press enter when its done to start the setup wizard. If you have don't have the key or don't want any emails from the oracle just uncheck the box and press next. Choose Install and Configure the database on the next screen. We will be installing Enterprise edition of Oracle database. Enter the usernames and passwords in the next two screens. Remember these passwords as you will need them to access admin account and the user account where Oracle will be installed.

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