The purpose of this technical paper is to document how to split Fusion Applications domains to multiple machines when originally provisioned in a single machine. This is different than scaling out or scaling up a Fusion Applications environment. This is also not to be confused with moving Fusion Applications from one environment to another. Initially you begin with a single server running one or more of the Fusion Applications product families. As your business grows, you may have to split Fusion Applications from a single box to multiple boxes to support increased load and volume. This paper documents how you can scale an existing single host environment – basically moving existing domains or managed servers to dedicated boxes to provide more load capacity. However, it is critical to note that eventually scale out is crucial for failover.
Please consult the following doc for complete instructions.