The only limitation I know of is that you can't have RAC going to single instance and then cascade from there to another standby. You can definitely have a simple standby from RAC to single instance. On 7/27/07, d cheng <dc4oracle@xxxxxxxxx> wrote: > > Hi Listers, > > I am working with a 2-node RAC system and we are thinking about using Data > Guard's physical database feature for DR Do you know if we can use a single > instance physical Standby database versus having another 2-node RAC standby > system? > > Thank you in advance for your help! > > - David > > ------------------------------ > Shape Yahoo! in your own image. Join our Network Research Panel > today!<http://us.rd.yahoo.com/evt=48517/*http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7> > >