Oracle9iAS supports clustering, the creation of multiple Oracle9iAS instances that coordinate their actions, transparently providing scalable, highly available services. Key features include:
 | Transparent application failover: For both stateless and stateful applications |
 | No single point of failure: When one or more nodes in a system fail, Oracle9iAS instances can still be deployed on those remaining |
 | Automatic connection rerouting: When an Oracle9iAS instance fails, the client request is transparently re-routed to an alternate instance |
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