Oracle RAC One Node is a new option available with Oracle Database 11g Release 2. Oracle RAC One Node is a single instance of an Oracle RAC-enabled database running on one node in a cluster.
RAC ONE Node is supported as a cold failover solution for E-Business Suite environments. We don't support live node migration; the E-Business Suite does not have code-level support for Fast Application Notification (FAN) events at present.
Is there RAC One Node documentation for EBS environments?
No, we do not explicitly certify or document E-Business Suite configurations. You can follow the generic RAC One Node documentation to implement this in E-Business Suite environments. If you're interested in using this technology with the E-Business Suite, you're advised to run proof-of-concept tests prior to a production deployment to ensure that it meets your operational requirements.