SQLSTATE[08004] [1040] Too many connections

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I'm getting this error messages SQLSTATE[08004] [1040] Too many connections, I'm using pdo adapter. Do I need to close connection? And how I do that?

In your my.conf file (usually located in /etc) find the line that says:


And somewhere below that set


Or whatever numeric value you need.

More information here: MySQL 5.5 Reference Manual: Too many connections.

SQLSTATE[08004] [1040] Too many connections, In your my.conf file (usually located in /etc) find the line that says: [mysqld]. And somewhere below that set max_connections=500. Or whatever  The following errors occasionally appear in the Plesk interface: Unable to connect to database: Too many connections. SQLSTATE[08004] [1040] Too many connections

You need change your my.cnf file.


Upper the value.

How to fix Message: SQLSTATE[08004] [1040] Too many connections, Because your Model class instantiates a new Database object in its constructor, each time you instantiate a Model (or any class extending it),  I've put a higher max-connection value and was able to reconnect my Plesk admin. The problem was caused by too much disk space used in my case and running : apt-get clean allowed me to free a little disk space and regain access to the Plesk Admin.

The root cause for this error for me was a full hard drive. Keep that in mind as a possibility.

Plesk and/or websites are inaccessible: SQLSTATE[08004] [1040 , SQLSTATE[08004] [1040] Too many connections. Websites fail to load with the error: Error Establishing a Database Connection. Plesk license  Note: In above step, you can login using root, you may wonder, when it is showing Too many connection error, how can you login as root? The answer is, MySQL by default will consider maximum allowed connection as max_connection + 1 for SUPER user to fix this issue.

In your mysql my must to run this:

Set Global max_connections=2000

I'm using phpMyAdmin and I executed

PDOException: SQLSTATE[08004] [1040] Too many connections in , A single user creating nodes continously results in PDOException: SQLSTATE[​08004] [1040] Too many connections in  Solution. The maximum number of connections threads allowed for the server is contained in the system variable max_connections.The default value is 151. To see the value to which this variable is set, run the following SQL command:

SQLSTATE[08004] [1040] Too many connections, SQLSTATE[08004] [1040] Too many connections. Posted by: Mark Hunkler Date: August 31, 2011 03:11PM. I keep getting this error on my site and I do not know  Hello @ken315,. You need to set a bigger value in the max_connections (deafult 100) setting in the /etc/my.cnf file.. Under the [mysqld] section add the following setting:. max_connections = 200

Which MySQL queries are causing this error message?, This issue, Too Many Connection error occurs when the max_connections variable reaches its maximum threshold value. Usually, the value for  A single user creating nodes continously results in PDOException: SQLSTATE[08004] [1040] Too many connections in lock_may_be_available() exception. To simulate the problem, create nodes (e.g. article) continuously. Typcially on my machine i get the exception on creating 44 nodes. my machine is a WAMP stack on Windows 7 with 3GB memory and i5 processor Steps to create: 1. Login as admin 2

Too many connections error on quite site / Community Support , A user today reported receiving error - PDOException: SQLSTATE[08004] [1040] Too many connections in lock_may_be_available(). According to google  Link to database cannot be established: SQLSTATE[08004] [1040] Too many connections Quand je constate mon hebergeur "Hostpapa" on me réponds qu'il n'y a pas de problème avec le serveur. Je n'y connais pas grand chose mais ne peux plus travailler sur ma boutique que j'ai du mettre en maintenance et qui malgré tout me fait le même message d

  • For those had trouble finding my.conf file: stackoverflow.com/a/27325487/515585
  • Small typo: the correct syntax is max_connections=500, not max-connections=500 as originally stated in this answer.
  • The string "set-variable=" is no longer needed since MySQL 5.x, so the other answer provided by Camden S. is correct.
  • But why does this happen? Is it because the connections aren't closed like asked in the question?
  • My root cause was also a full hard drive.
  • That works, but lasts only until you restart your MySQL server. So, a good way to bridge that time if you don't want to restart it immediately, but you also have edit my.cnf as shown in the other answers to make this change permanent.