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Oracle Database 11g Oracle Real Application Clusters Handbook, Second Edition by K Gopalakrishnan

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Oracle Kernel Components

The Oracle kernel components in the Oracle RAC environment are the set of additional background processes in each instance. The buffer cache and shared pool become global in the Oracle RAC environment, and managing the resources without conflicts and corruptions requires special handling. The new background processes in the Oracle RAC environment, along with those normal background processes that usually exist in single instances, manage the global resources effectively.

Global Cache and Global Enqueue Services

In Oracle RAC, as more than one instance is accessing the resource, the instances require better coordination at the resource management level. Otherwise, data corruption may occur. Each instance will have its ...

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