Warnings saying 'JCA Error : JCA0003 Unclosed connection detected'

Hi,
I am getting this message on my OC4J 10g standalone prompt whenever I make requests to my Oracle 9.2 database through Pooled Datasource (of oracle). I watch performance of my application on oc4j console. I open get new connection from datasource and close it at the end of request. I find many open connection there though I have checked explicitly, if there is any open connection close it, at the end of a request. The source code is large so i cant post it now. If any friend can help me solve this problem, I will post it as needed.
For now Ithis is how I the cosole is ... ( Just after boot )
C:\oc4j\bin>oc4j -start
Starting OC4J from C:\oc4j\j2ee\home ...
2006-04-22 15:22:34.692 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@1dbbaab' : ''.
2006-04-22 15:22:34.770 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@8f53c8' : ''.
2006-04-22 15:22:34.770 WARNING J2EE JCA0003 Unclosed JCA connection detected.
2006-04-22 15:22:35.864 NOTIFICATION JMS Router is initiating ...
06/04/22 15:22:37 Oracle Containers for J2EE 10g (10.1.3.0.0) initialized
After subsequest requests ...
2006-04-22 15:23:43.176 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@dc3491' : ''.
2006-04-22 15:23:43.176 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@142f024' : ''.
2006-04-22 15:23:45.708 WARNING J2EE JCA0003 Unclosed JCA connection detected.
2006-04-22 15:23:47.973 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@133365c' : ''.
2006-04-22 15:23:47.973 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@dc8f6d' : ''.
2006-04-22 15:23:49.973 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@151e135' : ''.
2006-04-22 15:23:49.973 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@1e7a4d0' : ''.
2006-04-22 15:23:49.973 WARNING J2EE JCA0003 Unclosed JCA connection detected.
2006-04-22 15:23:49.989 WARNING J2EE JCA0003 Unclosed JCA connection detected.
2006-04-22 15:23:49.989 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@113eb9c' : ''.
2006-04-22 15:23:49.989 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@52d360' : ''.
2006-04-22 15:23:49.989 WARNING J2EE JCA0003 Unclosed JCA connection detected.
2006-04-22 15:23:49.989 WARNING J2EE JCA0003 Unclosed JCA connection detected.
2006-04-22 15:23:54.973 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@128d1f4' : ''.
2006-04-22 15:23:56.333 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@1bb3c06' : ''.
2006-04-22 15:23:56.348 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@4134e0' : ''.
2006-04-22 15:23:56.348 WARNING J2EE DS265 Unclosed connection detected : 'oracle_jdbc_driver_Log
icalConnection_Proxy@b5c12e' : ''.

I was also seeing this warning (using OC4J 10.1.3.0.0 in Windows), so I tried to follow Frances' advice. However, when I changed the logging for the "oracle.j2ee.datasource" logger to "FINEST", my application was no longer able to get connections. I get the following NullPointerException whenever I attempt to get a connection from my datasource:
java.lang.NullPointerException
at oracle.oc4j.sql.spi.ManagedConnectionImpl.initForUse(ManagedConnectionImpl.java:161)
at oracle.oc4j.sql.spi.ManagedConnectionImpl.<init>(ManagedConnectionImpl.java:93)
at oracle.oc4j.sql.spi.ManagedConnectionFactoryImpl.createManagedConnection(ManagedConnectionFactoryImpl.java:199)
at com.evermind.server.connector.ApplicationConnectionManager.createManagedConnection(ApplicationConnectionManager.java:1333)
at oracle.j2ee.connector.ConnectionPoolImpl.createManagedConnectionFromFactory(ConnectionPoolImpl.java:324)
at oracle.j2ee.connector.ConnectionPoolImpl.access$800(ConnectionPoolImpl.java:95)
at oracle.j2ee.connector.ConnectionPoolImpl$NonePoolingScheme.getManagedConnection(ConnectionPoolImpl.java:1209)
at oracle.j2ee.connector.ConnectionPoolImpl.getManagedConnection(ConnectionPoolImpl.java:782)
at com.evermind.server.connector.ApplicationConnectionManager.getConnectionFromPool(ApplicationConnectionManager.java:1532)
at com.evermind.server.connector.ApplicationConnectionManager.acquireConnectionContext(ApplicationConnectionManager.java:1477)
at com.evermind.server.connector.ApplicationConnectionManager.allocateConnection(ApplicationConnectionManager.java:1423)
at oracle.j2ee.connector.OracleConnectionManager.unprivileged_allocateConnection(OracleConnectionManager.java:244)
at oracle.j2ee.connector.OracleConnectionManager.allocateConnection(OracleConnectionManager.java:198)
at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:197)
at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:142)
at oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:127)

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Warnings saying 'JCA Error : JCA0003 Unclosed connection detected'

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