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Chapter 2  Grid, Utility Computing and Clusters 

Grid Architecture

While the base of the model conveys the different underlying technologies, the top of model shows high-level behaviors that translate into services and user applications.

The ‘fabric’ layer provides the resources to which the shared access is controlled by the grid protocols. The resources normally include physical and logical entities. Physical entities are resources like storage systems, catalogs, servers and network resources. The resource may be a logical entity like distributed file system, computer cluster or distributed computer pool and database systems to store structured data. The Grid mechanism normally permits the capability for the resource management, which involves discovery and control.

The ‘connectivity’ layer defines core communications and authentication protocols required for Grid specific network transactions. These protocols enable the exchange of data between fabric layer resources. The ‘resource’ layer, based on the connectivity and authentication protocols, controls the access resources.

The “collective services” layer deals with the directory brokering services, scheduling services, data replications services and diagnostics/monitoring services. These services are not associated with any one specific resource but focus on interactions across resources.

For more information, see the book Oracle 11g Grid and Real Application Clusters 30% off if you buy it directly from Rampant TechPress . 

Written by top Oracle experts, this RAC book has a complete online code depot with ready to use RAC scripts.

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Our remote Oracle DBA service provides 100% of the remote Oracle database administration needs for your company, and includes 24x7 access to our staff of 100% OCP Certified Oracle DBAs. 

We require a 12 month service commitment and include the following services:

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  • Reporting and resolving all serious Oracle alert log messages
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  • Four hours of free remote DBA support every month. You can use these free hours for any DBA activity, including database analysis, system design, production migrations or personal mentoring.

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