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Pro Oracle Database 11g RAC on Linux by Martin Bach, Steve Shaw

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Chapter 2. RAC Concepts

Chapter 1 provided an introduction to Real Application Clusters; in this chapter, we will move on to discuss the concepts behind RAC in more detail. The topics introduced in this chapter form the basis of a successful implementation of a stable and highly available RAC environment.

We will begin with a look at cluster concepts in general, and then see which of them are available in RAC. Next, we will introduce the cluster layer foundation itself—Oracle Grid Infrastructure—before taking a closer look at the clustered database. Towards the end of this chapter, we will introduce some of the more interesting 11 g Release 2 features from a RAC database administrator's point of view.

There is a lot of important information to be ...

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