Could not connect to memcache and try to use file cache now!

Warning: Error establishing mySQL database connection. Correct user/password? Correct hostname? Database server running? in F:\wenxuemm.com\modules\article\17mb\class\ez_sql_mysql.php on line 84

Warning: mySQL database connection is not active in F:\wenxuemm.com\modules\article\17mb\class\ez_sql_mysql.php on line 116
数据库服务器连接失败