May I Convert Non RAC db to an RAC DB and add on a Node? Currently my work env as 1 node none RAC database 11gR2, we are getting another machine (Linux), so I need to add on this node to our currently env and becoming a RAC db. What is the best way/route to do it? Advanced thanks!
See the Oracle Real Application Clusters Installation Guide 11g Release 2 for Linux and UNIX.  It has a section on "Converting to Oracle RAC from Single-Instance Oracle Databases" describing several different ways this can be done.