I was just looking into the fact where there is any method to bypass the password of the RPD if we forgot the password.
Well in 10G there is a method to by pass the password (Follow the steps to bypass the password of the RPD)
Here in 11G we can change the password by opening the repository with the existing password and click on File –> Change Password.
As per my knowledge, there is no way to open the 11g RPD if you don’t know the password. The password is the encyption key used to encrypt the RPD…
I will update if I find solution…
For further information please refer the document below of Rittman