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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url="jdbc:oracle:thin:@(DESCRIPTION=(FAILOVER=ON)
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<managed-data-source
jndi-name="jdbc/RichiestaPubblicazioneDS"
name="RichiestaPubblicazioneDS"
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private Connection creaConnessioneDataSource(String nomedatasource) throws ConnessioneException{
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     I hope someone help me..

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If I deploy my application with the illustred datasource in my local OC4J (10.1.3 in a Standalone Environment) all work fine.
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oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:179)
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Connections:
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Maximum Number of Connections = -1
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Validate Connection = False
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http://homepage.mac.com/starshone/misc/Port80Log.jpg
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