Does RAC work with Oracle Standard Edition?
Oracle Standard Edition, the edition of Oracle for the SMB market, comes with a license for a 4 node RAC cluster. A standard edition license allows up to 4 CPU sockets in a cluster. Those 4 sockets may be in a single server or in two, three or four servers. As long as your cluster does not exceed 4 sockets, RAC is included as part of your Standard Edition License. Standard Edition does not limit the size of your database in anyway so as long as the processing power for a four socket configuration suits your needs, this can be a great way to save. If you need to scale to a larger cluster, Standard Edition can easily be upgraded to Enterprise Edition allowing you up to 1000 nodes. Standard Edition RAC configurations are required to use ASM. Because ASM saves time and effort, this is not really a limitation but more of a method for Oracle to help you ensure your success.