Too many connections

FILE: /home/wwwroot/jiahui/Core/Lib/Core/Db.class.php 　LINE: 168

[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/Db.class.php (168) DbMysql->connect()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Driver/Db/DbMysql.class.php (96) Db->initConnect()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Driver/Db/DbMysql.class.php (215) DbMysql->query(SHOW COLUMNS FROM `tbl_content`)
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/Model.class.php (135) DbMysql->getFields(tbl_content)
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/Model.class.php (123) Model->flush()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/Model.class.php (1156) Model->_checkTableInfo()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/Model.class.php (98) Model->db(0, )
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Common/common.php (277) Model->__construct(content, , )
[25-12-13 09:45:12] /home/wwwroot/jiahui/Home/Lib/Action/CommonAction.class.php (104) M(content)
[25-12-13 09:45:12] /home/wwwroot/jiahui/Home/Lib/Action/CommonAction.class.php (17) CommonAction->GetLeftNews()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Common/common.php (299) CommonAction->__construct()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/App.class.php (104) A(Dm)
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/App.class.php (208) App::exec()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Lib/Core/Think.class.php (39) App::run()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/Common/runtime.php (243) Think::start()
[25-12-13 09:45:12] /home/wwwroot/jiahui/Core/ThinkPHP.php (30) require(/home/wwwroot/jiahui/Core/Common/runtime.php)
[25-12-13 09:45:12] /home/wwwroot/jiahui/index.php (9) require(/home/wwwroot/jiahui/Core/ThinkPHP.php)