JDBC and cursors

I am debugging memory leak. IDS 9.21.UC4 Solaris 2.6 Can anyone explain what happens internally at Informix when a JDBC application does the following:- ResultSet.Close() PreparedStatment.Close() If I am right, ResultSet uses a database cursor internally. So closing a result set will issue a close cursor command. PreparedStatment.close() should issue a free prepared statment command. This way a prepared statement can be reused as long as it is not closed. In other words every time result set can be closed for a prepared statment without a memory leak. Also if onstat -g opn shows growing number of open tables, can it taken as equivalent of growing open cursors. TIA.