-----Original Message----- On Behalf Of Khemmanivanh, Somckit I just wanted to get people's opinions on the cost justification for RAC. ... --------------------------- When doing cost justifications, license cost is just one component of the overall picture. There are additional factors that increase the cost of RAC (i.e. setup, configuration, maintenance,...) but can also reduce it (higher availability = less downtime = less business impact = less $$$ lost). So, why are you considering RAC? Is it because of HA requirements then ask the management how much it costs the business for every minute/hour of downtime and include that in your calculation. Vlado Barun, M.Sc. Senior Data Architect, Cadre5 www.cadre5.com -- //www.freelists.org/webpage/oracle-l