Normally when you say Level0, it will check the catalog repository and back the database fully. If you have already done a backup, the present backup would be from the last level0 to the latest point of start. http://technet.oracle.com/docs/produ...onc.htm#436081

Comming to look into Knarayana's problem, could you please post your proceedures you followed in step by step form.

Sam