Unknown MySQL server host 'bdm310788164.my3w.com' (1)

FILE: /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php 　LINE: 55

#0 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php(55): E('Unknown MySQL s...')
#1 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Db.class.php(164): Think\Db\Driver\Mysql->connect()
#2 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php(84): Think\Db->initConnect(false)
#3 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php(207): Think\Db\Driver\Mysql->query('SHOW COLUMNS FR...')
#4 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Model.class.php(130): Think\Db\Driver\Mysql->getFields('tuik_update')
#5 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Model.class.php(118): Think\Model->flush()
#6 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Model.class.php(1298): Think\Model->_checkTableInfo()
#7 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Model.class.php(95): Think\Model->db(0, '', true)
#8 /usr/home/byu3367570001/htdocs/ThinkPHP/Common/functions.php(553): Think\Model->__construct('update', '', '')
#9 /usr/home/byu3367570001/htdocs/Apps/Common/Common/function.php(454): M('update')
#10 /usr/home/byu3367570001/htdocs/Apps/Home/Controller/CommonController.class.php(13): autosql()
#11 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Controller.class.php(41): Home\Controller\CommonController->_initialize()
#12 /usr/home/byu3367570001/htdocs/ThinkPHP/Common/functions.php(612): Think\Controller->__construct()
#13 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/App.class.php(87): controller('Model', '')
#14 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/App.class.php(200): Think\App::exec()
#15 /usr/home/byu3367570001/htdocs/ThinkPHP/Library/Think/Think.class.php(120): Think\App::run()
#16 /usr/home/byu3367570001/htdocs/ThinkPHP/ThinkPHP.php(96): Think\Think::start()
#17 /usr/home/byu3367570001/htdocs/index.php(29): require('/usr/home/byu33...')
#18 {main}