系统发生错误

:(

SQLSTATE[08004] [1040] Too many connections

错误位置

FILE: D:\web\web\ThinkPHP\Library\Think\Db\Driver.class.php  LINE: 109

TRACE

#0 D:\web\web\ThinkPHP\Library\Think\Db\Driver.class.php(109): E('SQLSTATE[08004]...')
#1 D:\web\web\ThinkPHP\Library\Think\Db\Driver.class.php(1059): Think\Db\Driver->connect()
#2 D:\web\web\ThinkPHP\Library\Think\Db\Driver\Mysql.class.php(50): Think\Db\Driver->initConnect(true)
#3 D:\web\web\ThinkPHP\Library\Think\Model.class.php(134): Think\Db\Driver\Mysql->getFields('cn_sys')
#4 D:\web\web\ThinkPHP\Library\Think\Model.class.php(122): Think\Model->flush()
#5 D:\web\web\ThinkPHP\Library\Think\Model.class.php(1429): Think\Model->_checkTableInfo()
#6 D:\web\web\ThinkPHP\Library\Think\Model.class.php(97): Think\Model->db(0, '', true)
#7 D:\web\web\ThinkPHP\Common\functions.php(619): Think\Model->__construct('sys', '', '')
#8 D:\web\web\APP\Home\Controller\CommonController.class.php(38): M('sys')
#9 D:\web\web\APP\Home\Controller\CommonController.class.php(7): Home\Controller\CommonController->init_setting()
#10 D:\web\web\APP\Home\Controller\ListController.class.php(6): Home\Controller\CommonController->_initialize()
#11 D:\web\web\ThinkPHP\Library\Think\Controller.class.php(41): Home\Controller\ListController->_initialize()
#12 D:\web\web\ThinkPHP\Common\functions.php(679): Think\Controller->__construct()
#13 D:\web\web\ThinkPHP\Library\Think\App.class.php(89): controller('List', '')
#14 D:\web\web\ThinkPHP\Library\Think\App.class.php(202): Think\App::exec()
#15 D:\web\web\ThinkPHP\Library\Think\Think.class.php(120): Think\App::run()
#16 D:\web\web\ThinkPHP\ThinkPHP.php(97): Think\Think::start()
#17 D:\web\web\index.php(25): require('D:\web\web\Thin...')
#18 {main}