How to access database without using the Connection object?

There is no standard way, but I assume you could use JNI and some software client on the machine, or, if you are really versed in the DBs protocol, you could open a socket communicate with the database directly, but neither of these are truely feasable, but they are possible.

What exactly is it that you need to do that you cannot use a Connection object, or what is it you are problems with, that you are assuming comes from using the Connection Object?