Article ID: 114668, created on Aug 28, 2012, last review on Apr 29, 2014

  • Applies to:
  • Plesk Sitebuilder 4.x for Linux/Unix


The following error is shown in Parallels Plesk Sitebuilder 4.x when login to the control panel or edit a site:

File: /usr/local/sitebuilder/include/Zend/Db/Adapter/Pdo/Abstract.php
Line: 131
Message: SQLSTATE[00000] [1040] Too many connections
Code: 0


Exceeded mysql limit "max_connections":

~# mysql -e"show variables like 'max_connections'"
| Variable_name   | Value |
| max_connections | 20    |

New connection to mysql cannot be established.


Add parameter "max_connections" with big values into section [mysqld] of mysql configuration file:


Remember to restart mysqld service to apply the changes:

~# /etc/init.d/mysqld restart

ea6a61e571a858aa6019ceb068ea403a 56797cefb1efc9130f7c48a7d1db0f0c fad6dc0c8e983c17ae70a51ac7952cd0 d055be4fdc562a8ecb8e6d0bf419f946

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