Hi,
You have to create different virtual machine with database software & clusterware and make network connection among them using virtual IP. this is only broad level idea
Thanks,
by
hatem hamza , Senior oracle database administrator , Imam Abdulrahman Bin Faisal University
This is very useful article for Oracle Database11g Release2 (11.2.0.3.0) RAC On Oracle Linux6.3 Using VirtualBox.
http://www.oracle-base.com/articles/11g/oracle-db-11gr2-rac-installation-on-oracle-linux-6-using-virtualbox.php
Best Regards,
Hatem Hamza