Call now: 252-767-6166  
Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles
New Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 








  Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 7 - Cache Fusion and Inter Instance Coordination

Benefits of Cache Fusion

As a result, very high scalability of database performance can be achieved simply by adding nodes to the cluster. RAC also enables better database capacity planning and conserves capital investment by consolidating many databases on a single large database, thus reducing administrative overhead.

Another advantage realized with cache fusion technology is that applications no longer need to be partitioned according to data access patterns. This was necessary in earlier versions of Oracle parallel databases in order to avoid or reduce data-block pinging. A scalable application on a single-node Oracle server will be just as flexible on a multi-node RAC, even in different workload situations.

However, scalability performance may be better with a workload of minimal cross-instance block transfers (OLTP operations) compared to a workload of large cross-instance block transfers. Where there is a large cross-instance transfer of resources, there is a certain overhead due to lock conversions and block transfers from one cache to another.

The advantage of improved load balancing can be used to leverage application performance. User connections can randomly access any instance in the cluster. Depending on the node capacity, instances can be balanced effectively. Contention for server resources, such as the CPU and memory, is reduced.

The above text is an excerpt from:

Oracle 10g Grid & Real Application Clusters
Oracle 10g Grid Computing with RAC
ISBN 0-9744355-4-6

by Mike Ault, Madhu Tumma


Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster


Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  

and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright © 1996 -  2020

All rights reserved by Burleson

Oracle ® is the registered trademark of Oracle Corporation.