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Oracle Enterprise Manager 10g Grid Control Handbook by Daniel Nguyen, Matthew Hart, Werner De Gruyter

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CHAPTER 3Grid Control and Maximum Availability

In business-critical environments, stakeholders choose what they believe to be vital aspects to the continuity of their business. When discussing business-critical environments, the first thing that comes to mind should be the concept of high availability. Without it, a simple system failure could cause a service outage, and service outages to a business are much like a missing groom in a wedding ceremony.

From a technical perspective, high availability is simply taking a single “service” and ensuring that a failure of one of its components will not result in an outage. So very often, high availability is thought to be at the physical server level—one host server is failed over for another. However, ...

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