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What is Oracle Real Application Clusters One Node (RAC One Node)?

April 26, 2017application Clusters Node Oracle RAC

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What is Oracle Real Application Clusters One Node (RAC One Node)?

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Oracle RAC One Node is an option available with Oracle Database 11g Release 2. Oracle RAC One Node is a single instance of Oracle RAC running on one node in a cluster. This option adds to the flexibility that Oracle offers for reducing costs via consolidation. It allows customers to more easily consolidate their less mission critical, single instance databases into a single cluster, with most of the high availability benefits provided by Oracle Real Application Clusers (automatic restart/failover, rolling patches, rolling OS and clusterware upgrades), and many of the benefits of server virtualization solutions like VMware. RAC One Node offers better high availability functionality than traditional cold failover cluster solutions because of a new Oracle technology Omotion, which is able to intelligently relocate database instances and connections to other cluster nodes for high availability and system load balancing.