||Oracle Tips by Burleson
Oracle10g Grid Computing
Chapter 12 - RAC Design Considerations
Designing Equipment for Real Application Clusters
active websites, the application servers may include web caches as
well as OC4J servers. The servers that run OC4J are the building
blocks of the application tier and provide the application service to
the clients. OC4J is J2EE compliant and includes:
clustering connects servers that run individual containers so that
they act in tandem. This provides more availability and scalability
than a single Oracle instance can provide. Additional OC4J instances
can be added or removed transparently to increase scalability or do
system maintenance. The OC4J cluster at the primary site has
identical hardware, OS, application server software, and
application-specific software to the secondary site. They are
configured similarly in all respects.
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