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Expert Oracle RAC 12c by Kai Yu, Riyaj Shamsudeen, Tariq Farooq, Syed Jaffar Hussain

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CHAPTER 1

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Overview of Oracle RAC

by Kai Yu

In today’s business world, with the growing importance of the Internet, more and more applications need to be available online all the time. One obvious example is the online store application. Many companies want to keep their online stores open 24x7 on 365 days so that customers from everywhere, in different time zones, can come at any time to browse products and place orders.

High Availability (HA) may also be critical for non-customer-facing applications. It is very common for IT departments to have complex distributed applications that connect to multiple data sources, such as those that extract ...

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