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

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Chapter 1. Introduction

In this chapter, we will discusses reasons for deploying Oracle Real Application Cluster to protect your database-based application from an unplanned outage and giving your application high availability, fault tolerance, and many other benefits that cannot be obtained from running your application against a single-instance Oracle database. This chapter will also cover the history of RAC and the evolution of Oracle clustering products, culminating with the product we know now.

Introducing Oracle Real Application Clusters

Oracle Real Application Clusters (RAC) is an option that sits on top of the Oracle database. Using the shared disk architecture, the database runs across a set of computing nodes offers increased availability, ...

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