db connections remain open and unused on startup

When ofbiz starts and checks the database, it will leave open connections and will not get reused.

If you run Check/Update database from webtools, you can see a new connection is created for your selected group

As far as I can tell, the problem lies in DatabaseUtil.getDatabaseMetaData. If the parameter connection is null, a new connection object is created but not closed (like any resource should be!)