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Oracle Database 10g Real Application Clusters Handbook by K Gopalakrishnan

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CHAPTER 11Global Resource Directory

Welcome to the world of resource management and administration in a parallel computing environment. This chapter provides a detailed discussion about resource management and locking issues and the interinstance coordination activities that take place in the cluster. Understanding the internal workings of locking will help you in architecting RAC solutions and administering the RAC. Be warned that the concepts discussed here are specific to the current versions of Oracle and may not be applicable to past or future versions.

The RAC environment includes numerous resources, such as multiple versions of data block buffers in buffer caches in different modes. Oracle uses different types of locking and queuing mechanisms ...

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