I've got an Oracle 10g XE Database that I want clients to be able to view remotely via SQL*PLUS or SQL Developer. Each schema has a name which includes the name of the client, so anyone looking at the all_users table would be able to see the names of all my other clients! Is there any way to restrict permissions on certain tables? And are there any other tables like this which would be a good idea to restrict access to? I'm not particularly concerned about our clients trying to hack things, I just don't want them to see a list of all our other clients!