Too many connections

FILE: /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Db.class.php 　LINE: 168

[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Db.class.php (168) DbMysqli->connect()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Driver/Db/DbMysqli.class.php (82) Db->initConnect()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Driver/Db/DbMysqli.class.php (210) DbMysqli->query(SHOW COLUMNS FROM `y_config`)
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Model.class.php (135) DbMysqli->getFields(y_config)
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Model.class.php (123) Model->flush()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Model.class.php (1156) Model->_checkTableInfo()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Model.class.php (98) Model->db(0, )
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Common/common.php (277) Model->__construct(config, , )
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/home/Lib/Action/Public.php (3) M(config)
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/home/Lib/Action/NewsAction.class.php (6) require(/home/wwwroot/www.lixuda.com/home/Lib/Action/Public.php)
[25-12-19 06:32:12] () NewsAction->index()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/App.class.php (169) ReflectionMethod->invoke()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/App.class.php (205) App::exec()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Lib/Core/Think.class.php (39) App::run()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/Common/runtime.php (243) Think::start()
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/ThinkPHP/ThinkPHP.php (30) require(/home/wwwroot/www.lixuda.com/ThinkPHP/Common/runtime.php)
[25-12-19 06:32:12] /home/wwwroot/www.lixuda.com/index.php (13) require(/home/wwwroot/www.lixuda.com/ThinkPHP/ThinkPHP.php)