Good question 3rd gen noob
I searched for this at the IPB Forum but couldnt find anything.
Here's some quotes though:
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This is caused by too many connections to the MySQL server at one given period in time. This is usually a problem that occurs if your host has given you too few connections for your board, in which case, if too many users are active on it, you will recieve that error message.
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This is a problem you will need to direct to your host, as they need to change server based settings.
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There are too many connections going through to your board at one given time. This is usually due to the fact that your host has not given you enough connections. Talk to your host about this error.
This one is from the MySQL site:
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Too many connections Error:
If you get the error Too many connections when you try to connect to MySQL, this means that there is already max_connections clients connected to the mysqld server.
If you need more connections than the default (100), then you should restart mysqld with a bigger value for the max_connections variable.
Note that mysqld actually allows (max_connections+1) clients to connect. The last connection is reserved for a user with the SUPER privilege. By not giving this privilege to normal users (they shouldn't need this), an administrator with this privilege can log in and use SHOW PROCESSLIST to find out what could be wrong. See section 4.5.7.6 SHOW PROCESSLIST.
The maximum number of connects MySQL is depending on how good the thread library is on a given platform. Linux or Solaris should be able to support 500-1000 simultaneous connections, depending on how much RAM you have and what your clients are doing.
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