INSTALL ORACLE DATABASE SOFTWARE IN WINDOWS 11GR2
Download the software from oracle site ,unzip the database software files and run setup.exe to start installation
step 1 is to skip security updates
Choose install database software only
If you want single instance or rac ,choose any option
Choose language
Choose the database edition
Enterprise edition has all the features like parallel,bitmap index, flashback ..etc
Choose the database base and home location
Save response file if you need it for next database installation
Wait for installation to complete
Good to go