Connection Pooling: how many active connections?

Hi, everybody.
I have a very simple question about connection pooling...
How many active connections should a database see once a connection pool has been opened?
I mean, it should see only one connection (the pool itself) at any time, or the number of "logical" active connections in that moment?
Thanks for any answer.

Sorry...
This is the wrong forum, I posted again my question in the JDBC Forum...

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