db = cx_Oracle.connect('system', 'mz123456', '192.168.1.119/orcl')
c = db.cursor()
c.execute('SELECT id,xname FROM mytab order by id')
results = c.fetchall()
for result in results:
req.write ('%s' %result[0])
req.write (',')
req.write ('%s' %result[1])
req.write ('<br>')