The Big Picture
To my mind, understanding how RAC works when it’s up and running isn’t the really difficult bit —it’s getting it installed and running in the first place that’s complicated. There are many layers that have to be configured correctly before the installation is complete. No matter what Oracle does to make things easier, there is an inherent volume of complexity involved in making sure that all the individual pieces are working correctly and cooperating; and each time you do it or, at least, each time I do it, there are some new bits to worry about.
Luckily, I don’t feel compelled to tell you how to install RAC because there are several blog items (such as the series by Tim Hall at www.oracle-base.com), massive installation notes ...
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