Please make sure that the Schema on which you are trying to restore the Repository is empty. Also ensure to Log in with Administrative privileges.
Check out the following discussion for more information.
How long does the restore usually takes.??
It should not take long. Probably it will complete in few minutes. However, it depends on the size of the Repository.
Usually the restoration process will be quicker if you ommit the options such as Workflow and Session Logs, Deployment history and the MX Data.
Thanks.. for the Info..I was able to restore..that's what I remember.. It was strange it over 30 min to restore 374mb repository. As you said I should have skipped the options such as Workflow and Session Logs, Deployment history. I skipped MX Data.
Anyways .. Issue is resolved.
Thanks for the help.