Comments on: MySQL : Too many connection errors.

By: Maresa

Maresa — Sun, 21 Feb 2010 19:24:33 +0000

If it is due to disk being full, login to the server (through SSH or equivalent) and delete unnecessary files (perhaps old logs, etc).

By: sundar

sundar — Mon, 15 Feb 2010 08:28:27 +0000

hai how to clear the disk space. Because i still face the “too many connection error”

By: Maresa

Maresa — Sun, 11 Oct 2009 01:37:09 +0000

Hmmm … getting this error when server was under pressure from Google bot seems a legitimate too many connections error, especially if you don’t have connection pooling.

By: jeephnx

jeephnx — Sat, 10 Oct 2009 05:24:05 +0000

Thanks. I can confirm from experience that a full disk creates this error. I guess it needs temp space to create the connection but fails and returns the message. Interestingly I also found the server was under pressure from googlebot which Ive read may also cause this error.

By: Maresa

Maresa — Mon, 20 Jul 2009 01:40:31 +0000

You need to login as super user. Then execute this code:

SET GLOBAL max_connections = 200;

If you want to change it permanently, you can add the following like under mysqld section.

max_connections = 500

Thanks for the question. I’ll modify the post to include this information.

By: fauzy

fauzy — Mon, 20 Jul 2009 00:51:34 +0000

May i know how to increase the max_connection?
is it by using command? how can i get it?..
many web said "Increase max_connections variable" but not tell exactly the step to fix it.

By: Maresa

Maresa — Fri, 12 Jun 2009 03:13:18 +0000

I don’t think you can limit a database size to a specific MB. You can, however, try to have the database on a specific directory on the server and have that directory size limited. In that case, it’s more like the OS file restriction (or quota) rather than database-imposed limitation.

By: drew

drew — Wed, 10 Jun 2009 09:08:06 +0000

hi.. can i just ask how can i limit a database size to a specific MB? because we are trying to make like a demo version thanx!