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Oracle10g Grid Computing with RAC
Chapter 12 - RAC Design Considerations


Cache fusion in Oracle10g RAC introduces an improved diskless algorithm that handles cache coherency more efficiently than Oracle’s earlier disk-ping-based architectures. This enables simpler database designs to be implemented while achieving optimal performance. However, great care must be taken to select the fastest interface and network components to get optimal performance from the cluster interconnect in order to realize the true benefits of Oracle's improvements.

Designing for true high availability starts with redundant hardware. If there are multiple single-points of failure, then the finest RAC implementation in the known Universe will do little to achieve high availability.

The response time and throughput requirements placed on the system by service-level agreements and customer/client expectations ultimately determine whether a data and functional partitioning strategy should be implemented, and how stringent the strategy must be. The response time and throughput needs for the application also determine how much effort needs to be invested to achieve an optimal database design.

To determine how to allocate work to particular instances, start with a careful analysis of the system’s workload. This analysis must consider:

  • System resource consumption by functional area.

  • Data access distributions by functional area.

Functional dependencies between application software components.

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.

Remote DBA Services

Burleson Consulting can offer world-class remote Oracle database support at super-affordable prices.

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:

  • Initial configuration review and problem identification
  • Installation of Oracle statistics collection mechanisms and quarterly database growth summaries
  • Hourly monitoring of your Oracle database for pending problems
  • Periodic performance analysis & identification of tuning activities
  • Twenty Four hour Oracle emergency support
  • Reporting and resolving all serious Oracle alert log messages
  • Free use of the BC TablePack, ServerPack and AuditPack services
  • Quick response emergency support for production database outages
  • 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.

For more information, please visit


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