RAC cost of ownership
The price for RAC license is $20,000 per CPU. The graph below shows the cost of server hardware and RAC license over number of CPU. As the graph indicates, The break even point is 8 CPUs. If a system is less than 8 CPUs, SMP setup is less expensive. If a system is more than 8 CPUs, RAC is less expensive. Because RAC is slow on accessing remote memory, the SMP system is always performed better than RAC if they have the same number of CPUs. To penetrate low-end market, Oracle offers RAC option for Standard Edition free, which can be installed on system with 4 CPU or less.
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