Error 400 Too Many Connections
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Mysql Error Too Many Connections Fix
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Error 1040 Too Many Connections
learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to resolve too many connections and fatal error in mysql running on vps up vote 9 down vote favorite sql error too many connections 7 I am running an application PHPlist on my linode server, simultaneously running 12 PHP scripts, each of which opens a MySQL connection. Now when I access PHPlist it often shows this error: Fatal Error: Sorry, the server is currently too busy, please try again later. When I am trying to access phpMyAdmin, it shows me a #1040 error. Output of my PHP scripts which run through cron jobs shows: PHP Warning: mysqli_connect(): (HY000/1040): Too many connections I am using the LAMP stack on the server with phpMyAdmin; the top output in terminal shows mysqld using 100-130% CPU. When I am trying to troubleshoot this problem I got some clues: Increase max_connection variable : I am using 200 (100 by default) Open table cache: 512 (400 by default) There are lots of variables to set but I can't determine what specific ones, I am getting some reference from: too many connections and http://dev.mysql.com/doc/refman/5.5/en/table-cache.html But according to my usage how to increase memory and what is the maximum memory difficult for me. On my ser
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this http://stackoverflow.com/questions/28192270/php-mysql-too-many-connections-issue-cent-os site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up PHP MySQL too many 'too many connections' issue - Cent OS up vote 0 down vote favorite We have high con-current traffic on server setup, when the traffic crossing 100+/sec, we facing the 'too many connections' issue with PHP & MySQL. We have separate AWS nodes for Application(PHP - 5.4.34) and Database(MySQL - 5.5.40). In the MySQL we have 3500 max connections limit and also we adjusted the too many connections variables in MySQL. On the high traffic time, the DB node CPU utilization not exceeds 10% and RAM usage below 4GB. But still we are facing the connections issue with application node. Using the MyISAM engine for Database. Used the mysql_connect function and closed the connection on every page completion. We monitoring the DB with Monyog tool, in that there is no slow queries or queue's. We googled for the solution, but still we didn't get any valuable solution on the issue. Edit: Here are further more details on our server setup, we are using the Apache prefork mpm and current mpm setup below. StartServers 300 MinSpareServers 300 MaxSpareServers 350 ServerLimit 1000 MaxClients 1000 MaxRequestsPerChild 99999 PHP Configuration: memory_limit : 2048 max_execution_time : 0 timeout : 15 keep_alive : 0ff keep_alive_timeout : 5 AWS EC2 App Node : Core : 8 vCPUs CPU utilization : 89% RAM : 2048MB out of 30.5GB Connection : mysql_connect API its consume more CPU utilization and low RAM usage. Edit:(Updates) We updated the connectivity API to PDO and implemented the changes in the package. With the test run, we found same issue again. W