Mysqldump Got Error 1040
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12 Comments If you run a fairly busy and/or badly configured MySQL server, you may receive something like this when attempting to connect: XHTML # mysql ERROR 1040: Too many connections 12 # mysqlERROR 1040: Too many connections MySQL is telling you that it is handling the mysql error too many connections fix maximum connections that you have configured it to handle. By default, MySQL will handle 100 connections simultaneously. 1040 cannot log in to the mysql server phpmyadmin This is very similar to the situation when Apache reaches the MaxClients setting. You won't even be able to connect to MySQL to find out what mysql too many connections solution is causing the connections to be used up, so you will be forced to restart the MySQL daemon to troubleshoot the issue. What causes MySQL to run out of connections? Here's a list of reasons that may cause MySQL to run out
Too Many Connections Error In Mysql
of available connections, listed in order of what you should check: Bad MySQL configuration Verify that you have set MySQL's buffers and caches to appropriate levels for the type of data you're storing and the types of queries that you are running. One quick way to check this information is via MySQLTuner. The script will tell you how well your server is performing along with the corrections you should make. Running the script only takes a few moments and it doesn't require a DBA to decipher mysql too many connections fix the results. Data storage techniques Remember that MySQL works best when moving vertically, not horizontally. If you have a table with 20 columns, breaking it into two tables with 10 columns each will improve performance. Even if you need to join the two tables together to get your data, it will still perform at a higher level. Also, use the right data types for the right data. If you're storing an integer only, don't use a CHAR or VARCHAR data type. If your integer will be small, then use something like a TINYINT or SMALLINT rather than INT. This means MySQL will use less memory, pull less data from the disk, and have higher performing joins. Slow queries These are generally pretty easy to fix. If you have queries that don't use indexes, or if queries run slowly with indexes in place, you need to rethink how you're pulling your data. Should your data be split into multiple tables? Are you pulling more data than you need? Keep these questions in mind, enable the slow query log, and re-work your queries to find where the bottlenecks occur. Division of labor Most people who use MySQL have a dynamic site written in a scripting language, like PHP, Perl or Python. It's obvious that your server will need to do some work to parse the scripts, send data back to the client, and communicate with MySQL. If you find that your server is overworked, consider moving MySQL to its own dedicated hardware. Among many other
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This topic This board Entire Site Community Modifications Themes Wiki Mantis Select language: Albanian Arabic Bulgarian Catalan Chinese Simplified Chinese Traditional Croatian Czech Informal Czech Danish Dutch English British English Esperanto Estonian Finnish French Galician German Informal German Greek Hebrew Hungarian Indonesian Italian Japanese Kurdish Kurmanji Lithuanian Macedonian Malay Norwegian Persian Polish Portuguese Brazilian Portuguese Pt Romanian Russian Serbian Cyrillic Serbian Latin Slovak Slovenian Spanish Es Spanish Latin Swedish Thai Turkish Ukrainian Urdu Vietnamese News: Follow SMF on Twitter. Home Help Search Login Register Advertisement: Simple Machines Community Forum » SMF Development » Bug Reports » Fixed or Bogus Bugs » Topic: Database: Too many connections « previous next » Print Pages: [1] Go Down Author Topic: Database: Too many connections (Read 5777 times) zlusheng21 Newbie Posts: 2 Database: Too many connections « on: September 17, 2004, 07:33:16 PM » DBI connect('mysql:localhost','root',...) failed: Too many connections at /usr/local/cpanel/Cpanel/Mysql.pm line 42mysqldump: Got error: 1040: Too many connections when trying to connect? RhKA This is the error I get when I try to backup my database.I cannot access the forum nor can I login to PHPMyadminAnyone have a similar problem?I am hosted on 000k.com Logged [Unknown] SMF Friend SMF Master Posts: 36,102 Gender: Re: Database: Too many connections « Reply #1 on: September 17, 2004, 07:37:31 PM » Quote from: zlusheng21 on September 17, 2004, 07:33:16 PMDBI connect('mysql:localhost','root',...) failed: Too many connections at /usr/local/cpanel/Cpanel/Mysql.pm line 42mysqldump: Got error: 1040: Too many connections when trying to connect