public void cleanOldSweeps() {
		conn.prepare("set search_path=esri,public");
		PreparedStatement stmt = conn.getPreparedStatement();
		try {
			stmt.execute();
			stmt.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
		/*conn.prepare("select "+SCHEMA+".clean_sweeps()");
		stmt = conn.getPreparedStatement();
		try {
			stmt.execute();
			stmt.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}*/
		conn.prepare("select "+SCHEMA+".delete_old_services()");
		stmt = conn.getPreparedStatement();
		try {
			stmt.execute();
			stmt.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}