Connection Pool Metrics in ASC - doesn't seem to reflect the usage

Guys,
So i am trying to monitor the jdbc connection pool usage using the Application server Console (following the link --> Cluster Topology > Application Server: engas-machine > OC4J: oc4jinstance > JDBC Resources > Connection Pool Metrics: "myconnectionpool"
But i don't see the Pool Usage not reflecting any change and displaying the value 0 for all attributes as below
     Connections In Use     0
     Free Connections          0
     Total Connections in Pool          0
     Threads Waiting for Connections     0
I wonder why is that, i wonder if i have to use ojdbc-dms driver for the ASC to display the actual statistics ?
Thanks in advance

BTW. here is the data-source.xml file...
<data-sources xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.oracle.com/oracleas/schema/data-sources-10_1.xsd" schema-major-version="10" schema-minor-version="1">
<managed-data-source connection-pool-name="MyAppConnectionPool" jndi-name="jdbc/mydb" name="mydatasource"/>
<connection-pool name="MyAppConnectionPool" initial-limit="20" max-connections="100" min-connections="20">
<connection-factory factory-class="oracle.jdbc.pool.OracleDataSource" user="[username]" password="[password]" url="jdbc:oracle:oci:@mydb" commit-record-table-name=""/>
</connection-pool>
</data-sources>
</connection-pool>
</data-sources>

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