Cloning using RMAN
Posted on 2007-04-06
Im trying to clone a database using RMAN DUPLICATE command. I have gone through the documents and was able to get a basic idea of how to do it. Im still suspicious whether i got the answers for the following situations
1) Suppose we have RMAN recovery catalog on host A and we are trying to clone the database DB1 on host B onto host C. Can we clone the databse DB1 on the same host i.e., host B? It is not possible for RMAN to connect to 2 target databases at a time right, except in the came where we perform cloning and connect to an AUXILIARY instance (?).
2) I heard we can perform a manual cloning of a database on the same host provided it has different INSTANCE_NAME set though the DB_NAME can be the same. Did i get that right? What is the use of the parameter DB_UNIQUE_NAME, which can also be used in cloning sometimes?
Any information will be of a great help.