Hrishy, Why do you think disk-based replicatrion is better than DG? I'm not saying that it's a bad option. But if you design your DWH, with huge tables partitioned so that you just update a new (or single) partition, in it's own tablespace, then you can just copy that file to make your standby up-to-date, not all the db has to be copied. (well, you may end up copying more than one file, for indexes, ...). The point is that a good design, taking into account the fact that there will be a standby DB that has to be kept up-to-date quickly, is the best way out. rgds On Nov 20, 2007 4:24 PM, hrishy <hrishys@xxxxxxxxxxx> wrote: > Hi Dennis > > Thanks for taking time out and responding. > > In many systems what i have seen is the EDW is huge > and they just cannot afford to do without nologging > operation > > For management disaster recovery means when the > building blows up we start operating from another > country and we start working . > > With these kind of systems in mind when the > interviewer persisted with dataguard option i > explained to him dataguard means frequently recreating > the standby becuase of the nologging operations. > > I was more on the expensive things like EMC Symetric > technology or any kind of storage based replication. > > Let me see if i get the job offer :-). > > But i would be very happy to see what the experts > think here are there any other solutions apart from > storage based replication > > regards > Hrishy > > > > > ____________________________________________________ > Which email service gives you unlimited storage? > http://uk.mail.yahoo.com > > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l