I think what happens to open (pooled) connection upon JVM exit depends on JDBC driver.
IMO if you were using SimpleDataSource of iBatis, you'd have to call forceCloseAll() to close all pooled connections at the end of execution of your app (I think I have even used that years ago). Not sure about DBCP, but I bet calling basicDataSource.close() must help.
Not yet…getting ready too.
If I’m using Apache Dbcp to handle connection pooling, do I have to manually close the pooling objects?