Pls refer the Master Note ID : 851598.1 and complete all the steps specified in the note as per your OS.
In the present article, i am using the OEL 5.4 (32-bit) as OS and following the note id : 880936.1 to complete all the preparatory steps for 11gR2 database creation.
Create the required user and groups for the installation
Required RPMs installation :
Make sure that the following RPMs are installed,
In my OS following four RPMs are not installed.
Session Log :
Following files should be modified as per the following session log:
/etc/sysctl.conf ==> Can be modified while installing using OUI.
Make sure the following versions are verified.
Finally add the following entries in the oracle user profile ( .bash_profile )
Now the OS is ready for installing 11gR2 database.
Hope it helps