well for protection against loss of the original box, it's obviously not a great plan! It might provide some protection against logical corruption (the mythical 'junior dba' for example) if configured with a delay. As far as switchover/switchback goes - that operation doesn't involve a rebuild - though failover does. Niall Litchfield On Tue, Feb 3, 2009 at 10:55 AM, Howard Latham <howard.latham@xxxxxxxxx>wrote: > Oracle 10g and 11g. > > REDHAT LInux > > I have just been told by a consultant that a standby on the same box > as a primary is not recommended.(We also have a standby on another > box) My feeling is that will speedup a rebuild should we ever have to > switch over and switch back.Any views? > > > > -- > Howard A. Latham > -- > //www.freelists.org/webpage/oracle-l > > > -- Niall Litchfield Oracle DBA http://www.orawin.info