This article discusses running Oracle Real Application Clusters (RAC) on servers configured with Sun™ Logical Domains (LDoms). Sun LDoms virtualization technology allows the creation of multiple virtual systems on a single physical system, and enables fine-grained assignment of CPU and memory resources to an Oracle RAC workload. When deployed on Sun's CoolThreads™ technology-based servers, with up to 256 threads per system, this solution provides a powerful platform for both development and production environments. In development environments, multiple Oracle RAC nodes can be deployed on the same physical server to reduce hardware costs, while a production environment can place each Oracle node on a separate physical server for increased availability.

This paper addresses the following topics:

• "Introduction" on page 1 provides an overview of Oracle RAC and LDoms, and discusses the various deployment options for this solution.
• "Software requirements" on page 5 lists the software and firmware requirements, and "Hardware configuration" on page 6 describes the hardware used for an example configuration.
• "Software installation and configuration" on page 11, "Network configuration" on page 16, and "Storage configuration" on page 25 describe the steps necessary to install and configure an example configuration.
• "Additional information" on page 28 provides supplemental information, including performance considerations and known issues.