Constructs a new ConnectionManager, called by getInstance
Parameters: adriver - the database driver name Parameters: aurl - the database connection string Parameters: auser - the database user Parameters: apassword - the database password Parameters: size - the initial pool size
Creates a new ConnectionObject, loading the JDBC driver in the process if necessary
Parameters: connName - the connection name, ignored for this the defaultconnection manager as only a single instance of the default connection isused. throws: SQLException -