I was following this Site for installing Oracle 12c on my Ubuntu 14.04.But I was stuck in the middle of the installation for the following step:


I used following commands to get permission but still didn't worked:
sudo chown -R oracle:oinstall /u01
chown -Rf oracle:dba /u01/app/oracle/product/12.1.0/dbhome_1
chown -Rf oracle:dba /u01/app/oracle
How can i solve this problem.I am stuck with this problem for a month.I know that ubuntu 14.04 is not in certified os list for oracle 12c.If anyone using ubuntu 14.04 with Oracle 12c. then please please help me to install oracle 12c on my ubuntu 14.04.Thanks