well RAC clearly includes RAC!, assuming you intended SE yes it does include RAC for free. from the page you refer to " Standard Edition <http://www.oracle.com/database/Standard_Edition.html> Four-processor version of Oracle Database 10*g,* including full clustering support " and if you click the se link "Oracle Database 10g Standard Edition is a full-featured database packaged for small to midsize businesses that require the non-stop availability and flexible scalability of Oracle Real Application Clusters." -- Niall Litchfield Oracle DBA http://www.niall.litchfield.dial.pipex.com -- //www.freelists.org/webpage/oracle-l