Pl identify version of OS and what Oracle software exactly you want to install
It is an Linux OS and Wanted to install Oracle 11G. Is that possible?
Which exact Linux version ? Which exact 11g software ? Database ? OBIEE ? FMW ? Discoverer ? Forms ? Something else ?
I am newbie in Oracle. I want to know how to install Oracle on server.
As you will get it wrong. And then blame Oracle.
Two choices. Get someone experienced in Oracle to do the installation and setup. Or gain the basic knowledge needed for installation and setup by attending an Oracle DBA course.
I would have mentioned three choices, but it seems you have already discarded RTFM'ing the detailed installation manuals, by posing a generic how-to question here.