Database Reference
In-Depth Information
Data center(s)
The high availability system architecture's foundation is underlying in the data cen-
ter(s) used for deployment of Oracle SOA Suite components. Usually, most imple-
mentations are single, physical sites but it is highly recommended that for a medium
to large deployment you create at least two logical sites within a data center to get the
highest possible availability uptime for your business services. The availability uptime
SLAs for 99.999 percent requires that the system's architecture be designed and de-
ployed with at least two physical sites. If you are designing the system architecture to
meet the SLAs of 99.9 percent availability uptime, you are recommended to select the
data center that has the redundant network, usually from two independent sources
and with at least a secondary power source from on-premise power generators. Data
center(s) with two independent power sources are rare to find and are expensive to
build or lease.
Deployment architecture options
As shown in the following diagram, the web server(s) and application server(s) can be
installed in different hosts. The load balancing and failover capabilities are added in
each layer. SOA Suite app-to-app calling is recommended to be implemented at the
same endpoint as the consumer endpoint for high availability and ease of operations.
The following diagram shows other available options for configuring web server(s)
and application server(s):
