How to migrate from Google Code's subversion to another subversion server keeping the history? The problem here is that I don't have access to the repository of Google Code, nor to the one I will migrate.
You can 'svnsync' the data from Google code to a local repository on your pc. You can then use 'svnadmin' to create a dump file from that and send that to your new hosting provider or in some cases you can use svnsync to upload to the repository.
The only public hosting I know that supports svnsync upload is Google code (it requires clearing the repository first), which most likely doesn't help you, but there might be others now.