Well i am new to oracle. I wanna know if oracle run time version will support replication between the production and test regions(instances) or not? Secondly we have 10databases under one instance on the server, can we have 10instances one per each database on that machine. Will there be some advantages to this or not like doing loading in one instance and shutting down other instace, one instance having the arch. on for that database and other won't. Pl reply as soon as possible. thanks in advance for your help.