dc.setSQL("select * from portlet");
_list = dc.getResults();
_xstream = new XStream(new DomDriver());
_writing = new File(backupTempFilePath + "/Portlet.xml");
_bout = new BufferedOutputStream(new FileOutputStream(_writing));
_xstream.toXML(_list, _bout);
_bout.close();
_list = null;
_bout = null;
/* portlet_preferences */