install oracle 12 on ubuntu

install oracle 12c on ubuntu 14.04

https://thinkigotit.wordpress.com/2014/08/13/install-oracle-database-12c-in-ubuntu-14-04/

install oracle 12c on ubuntu 12.04

https://gemsofprogramming.wordpress.com/2013/09/19/installing-oracle-12c-on-ubuntu-12-04-64-bit-a-hard-journey-but-its-worth-it/

https://itcloudnet.blogspot.com/2015/02/how-to-install-configure-oracle.html

uninstall 12c on linux

https://blog.dbi-services.com/oracle-database-12c-new-features-uninstaller-encapsulated-into-installation-media-1/