Tool to use in order to copy schemas

Hi,

Assuming I have two 11g databases on two separates Windows servers.

I need to replace schemas on target database by schemas on source database.

Here are my constraints :

1) I need an automatic tool (no need to perform manual actions).

2) My schemas contain long type data (not possible to use impdp with a network link)

3) I want to run my tool from a server that's not one of the two servers hosting databases

4) I don't have the create users script

For the moment, I found these two solutions :

Using sql developer (copy database tool)

Using oem cc 12c, but the copy schema tool doesn't work (Oracle support told me it works on 13c)