In this article, I tried to explain Disaster Recovery [DR] site creation for R12 in elaborate manner. It's a very much practical hands on article. By, following each steps carefully any one can create a R12 Disaster Recovery site. I tried to avoid theoretical details about Disaster Recovery unless required for practical implementation. Here I have given a real DR site creation process.
[By following this document any one create a physical standby Data guard site of oracle 11g database also].
[By following this document any one create a physical standby Data guard site of oracle 11g database also].