You are not logged in.
#1 2009-05-14 03:42:45
- simron
- Real Member
Offline
Forum error
Sometimes, when I click on a topic, it comes up with this error:
An error was encountered
Error: Unable to connect to MySQL server. MySQL reported: User mathsis already has more than 'max_user_connections' active connections.
What is this?
Linux FTW
#2 2009-05-14 04:00:07
- random_fruit
- Member
Offline
Re: Forum error
MySQL is the system (a database management system) which stores and organises the message texts of Maths is fun. When designing an application of a database, it is desirable to have an allowed maximum number of uses at any one time. The error message above says the system has already reached this limit, and so you can't connect.
#4 2009-05-14 05:06:16
- random_fruit
- Member
Offline
Re: Forum error
Perhaps in the time it takes you to refresh, the number of users goes down? It's probable that the database system (MySQL) only has a user connected during the period the messages are being selected from the database. This is only happening between a user clicking on a message title and the message text appearing on his/her screen.
#5 2009-05-14 05:08:39
- random_fruit
- Member
Offline
Re: Forum error
Perhaps in the time it takes you to refresh, the number of users goes down? It's probable that the database system (MySQL) only has a user connected during the period the messages are being selected from the database. This is only happening between a user clicking on a message title and the message text appearing on his/her screen.
Amusing... when I pressed the 'submit' button for this post, I got the same message myself!
#6 2009-05-14 07:09:27
- bobbym
- Administrator
Offline
Re: Forum error
Hi random_fruit
I am getting that error also. Thanks for the MySQL info.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#7 2009-05-14 07:43:49
- MathsIsFun
- Administrator
Offline
Re: Forum error
The server is having a busy day.
I set limits so it does not run out of memory ... if memory runs low it starts shutting down entire services that would disable the site.
So rather than have the building burn down it is better to limit how many people can be inside at one time.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#8 2009-05-14 08:40:11
- bobbym
- Administrator
Offline
Re: Forum error
Hi MathsisFun;
Thanks for explaining it.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.