a) We need to configure the RedHat 6.0 Linux kernel to support Oracle
Edit the vi /etc/sysctl.conf and add following lines.
b) Now execute sysctl -p command to apply the new settings:
C) Edit the vi /etc/pam.d/login file and add following line
d) Edit the vi /etc/security/limits.conf file and add following lines:
e) modify the vi /etc/sysconfig/selinux change value of SELINUX variable to disabled:
Add the Oracle User:
a) Next we need to create the Oracle user account, OS groups and mount point.
The Oracle software will be installed and owned by the oracle user account. In additional
several OS groups are created that allow other non-oracle OS users privileged access to the
database.
b) Login as root and create the user oracle account and the OS groups:
c) Now we can log into our new oracle account and configure the bash profile: 
vi ~/. bash_profile
Add the following lines to the profile script: 
4) Install Database
Since we are going to install the Database in silent mode, we need a response file.
The response file will provide instructions to the installer program on how we want Oracle 12.1.0.1 Database software configured.
Change into the database directory and launch the runInstaller script as follows:
in my case i used above rsp file
b) At the conclusion of the install we need to log in as root and execute the
/u01/app/oracle/product/11.2.0/dbhome_1/root.sh script.
..... to be continued Navigate to
OBIEE 11g Installation