Too many connections

FILE: /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Db.class.php 　LINE: 162

[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Db.class.php (162) DbMysqli->connect()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Driver/Db/DbMysqli.class.php (81) Db->initConnect()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Driver/Db/DbMysqli.class.php (209) DbMysqli->query(SHOW COLUMNS FROM `dict_category`)
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (135) DbMysqli->getFields(`dict_category`)
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (123) Model->flush()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (1174) Model->_checkTableInfo()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (98) Model->db(0, )
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/Dict/Lib/Action/IndexAction.class.php (92) Model->__construct()
[24-04-20 00:01:04] () IndexAction->dict()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/App.class.php (171) ReflectionMethod->invoke()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/App.class.php (207) App::exec()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Think.class.php (39) App::run()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/Common/runtime.php (244) Think::start()
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/ThinkPHP/ThinkPHP.php (33) require(/www/wwwroot/fy.tingclass.net/ThinkPHP/Common/runtime.php)
[24-04-20 00:01:04] /www/wwwroot/fy.tingclass.net/index.php (22) require(/www/wwwroot/fy.tingclass.net/ThinkPHP/ThinkPHP.php)