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Oracle10g Grid Computing with RAC
Chapter 12 - RAC Design Considerations

Designing for High Performance

Designing for high performance means that every tier of the design must eliminate contention for resources. If there is no contention, then each process gets the resources it needs to perform optimally.  Resources fall into multiple categories: physical, as in disk and network, and internal, such as CPU speed and memory capacity. Designing for performance means utilizing these resources properly and not relying on memory or disk resources to make up for poor application design.

As with normal databases, the application design will drive performance. The finest equipment will not make up for a poor application design. In the days of Oracle Parallel Server (OPS), Oracle recommended partitioning the application data and the servers to make OPS perform. Now, Oracle salesmen insist that any application can be run with RAC, with no need for changes.

To add capacity, just add a server and bingo, more capacity is provided and more users, no matter what they do with the application, can connect. This all sounds wonderful until the manual Oracle9i Real Application Clusters Deployment and Performance, Release 1 (9.0.1), Part No. A96598-01, chapter 3, Scaling Applications for Real Application Clusters, and Chapter 4, Scaling Applications for Real Application Clusters, is consulted. There, Oracle recommends partitioning both the application data and the users to optimize performance. This unfortunate fact is omitted from the 9.2 and 10g versions of the manual, which seems to indicate the automated tuning features of 9.2 and 10g relieve the DBA of this arduous task.

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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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.

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