SQLSTATE[HY000] [1049] Unknown database 'btv'

FILE: /alidata/www/eibtv/ThinkPHP/Library/Think/Db/Driver.class.php 　LINE: 109

#0 /alidata/www/eibtv/ThinkPHP/Library/Think/Db/Driver.class.php(109): E('SQLSTATE[HY000]...')
#1 /alidata/www/eibtv/ThinkPHP/Library/Think/Db/Driver.class.php(1075): Think\Db\Driver->connect()
#2 /alidata/www/eibtv/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php(47): Think\Db\Driver->initConnect(true)
#3 /alidata/www/eibtv/ThinkPHP/Library/Think/Model.class.php(134): Think\Db\Driver\Mysql->getFields('tv_ad')
#4 /alidata/www/eibtv/ThinkPHP/Library/Think/Model.class.php(122): Think\Model->flush()
#5 /alidata/www/eibtv/ThinkPHP/Library/Think/Model.class.php(1454): Think\Model->_checkTableInfo()
#6 /alidata/www/eibtv/ThinkPHP/Library/Think/Model.class.php(97): Think\Model->db(0, '', true)
#7 /alidata/www/eibtv/ThinkPHP/Common/functions.php(596): Think\Model->__construct('ad')
#8 /alidata/www/eibtv/webstate/Home/Controller/PublicController.class.php(7): D('ad')
#9 /alidata/www/eibtv/ThinkPHP/Library/Think/Controller.class.php(41): Home\Controller\PublicController->_initialize()
#10 /alidata/www/eibtv/ThinkPHP/Common/functions.php(681): Think\Controller->__construct()
#11 /alidata/www/eibtv/ThinkPHP/Library/Think/App.class.php(89): controller('Detailed', '')
#12 /alidata/www/eibtv/ThinkPHP/Library/Think/App.class.php(204): Think\App::exec()
#13 /alidata/www/eibtv/ThinkPHP/Library/Think/Think.class.php(120): Think\App::run()
#14 /alidata/www/eibtv/ThinkPHP/ThinkPHP.php(97): Think\Think::start()
#15 /alidata/www/eibtv/index.php(38): require('/alidata/www/ei...')
#16 {main}