Database error in vBulletin

[Milance]

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: User already has more than 'max_user_connections' active connections
/includes/class_core.php on line 314

MySQL Error :
Error Number :
Request Date :
Error Date :
Script :
Referrer :
IP Address :
Username :
Classname : vB_Database
MySQL Version :

I often get a lot of emails with this message.
I am using vbulletin v4.1.6
I am asking for help.

[yilmaz]

Only thing you can do to prevent this in vBulletin is to make sure that Persistent Connections in vBulletin's config.php are turned off. Other than that you'll need to purchase a plan with more connections from your host or move to another provider.

The section in the config.php file is:
// ****** MASTER DATABASE PERSISTENT CONNECTIONS ******
// This option allows you to turn persistent connections to MySQL on or off.
// The difference in performance is negligible for all but the largest boards.
// If you are unsure what this should be, leave it off. (0 = off; 1 = on)
$config['MasterServer']['usepconnect'] = 0;

This should be set to 0 in your file.

[Milance]

to stand at 0
How much should I set it to?
The host says that 30 max connections are allowed on the server

[yilmaz]

You are restricted to a certain number of connections.
Ask your host what to do.
They might change it for you but they might ask you to choose another plan with them.(More expensive)