Php getting too many connections error from MySQL
- by uzioriluzan
Hello everyone,
I am using MySQL and PHP with 2 application servers and 1 database server.
With the increase of the number of users (around 1000 by now), I'm getting the following error :
SQLSTATE[08004] [1040] Too many connections
The parameter "max_connections" is set to "1000" in my.cnf and "mysql.max_persistent" is set to -1 in php.ini.
There are at most 1500 apache processes running at a time since the "MaxClients" apache parameter is equal to 750 and we have 2 application servers.
Should I raise the "max_connections" to 1500 as indicated in here?
Or should I set "mysql.max_persistent" to 750 (we use PDO with persistent connections for performance reasons since the database server is not the same as the application servers)?
Or should I try something else?
Thanks in advance!
