# Mysql::Error: Lost connection to MySQL server during query: SELECT \* FROM sessions WHERE (session\_i **URL:** \ **Category:** Rails\ **Created:** [January 14, 2008, 5:50pm UTC](https://www.ruby-forum.com/t/mysql-lost-connection-to-mysql-server-during-query-select-from-sessions-where-session-i/126011 "2008-01-14T17:50:31Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![chanhuai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/22d042/32.png) [@chanhuai](https://www.ruby-forum.com/u/chanhuai)\ **Post date:** [January 14, 2008, 5:50pm UTC](https://www.ruby-forum.com/t/mysql-lost-connection-to-mysql-server-during-query-select-from-sessions-where-session-i/126011/1 "2008-01-14T17:50:31Z")
Hi i keep on getting this error when i try to GET one of the page in my website. any idea where went wrong. was it something wrong with the server? Mysql::Error: Lost connection to MySQL server during query: SELECT \* FROM sessions WHERE (session\_id = ‘55f84af9071afac179e25506d37fab42’) LIMIT 1 Here’s the complete error message Processing AdminController#list (for 127.0.0.1 at 2008-01-15 00:14:59) [GET] Session ID: 55f84af9071afac179e25506d37fab42 Parameters: {“action”=\>“list”, “controller”=\>“admin”} ^[[4;35;1mMembership Load (0.002293)^[[0m ^[[0mSELECT \* FROM memberships ^[[0m ^[[4;36;1mMembership Columns (0.006878)^[[0m ^[[0;1mSHOW FIELDS FROM memberships^[[0m ^[[4;35;1mUser Columns (0.032467)^[[0m ^[[0mSHOW FIELDS FROM users^[[0m ^[[4;36;1mUser Load (0.009823)^[[0m ^[[0;1mSELECT \* FROM users WHERE (users.`id` = 1) LIMIT 1^[[0m ^[[4;35;1mUser Load (0.005218)^[[0m ^[[0mSELECT \* FROM users WHERE (users.`id` = 1) LIMIT 1^[[0m ^[[4;36;1mCategory Load (0.002756)^[[0m ^[[0;1mSELECT \* FROM categories ^[[0m ^[[4;35;1mCategory Columns (0.009436)^[[0m ^[[0mSHOW FIELDS FROM categories^[[0m ^[[4;36;1mBrand Load (0.002521)^[[0m ^[[0;1mSELECT \* FROM brands ^[[0m ^[[4;35;1mBrand Columns (0.010849)^[[0m ^[[0mSHOW FIELDS FROM brands^[[0m ^[[4;36;1mProduct Columns (0.009531)^[[0m ^[[0;1mSHOW FIELDS FROM products^[[0m ^[[4;35;1mSQL (0.002523)^[[0m ^[[0mSELECT count(\*) AS count\_all FROM products ^[[0m ^[[4;36;1mProduct Load (0.003852)^[[0m ^[[0;1mSELECT \* FROM products LIMIT 0, 20^[[0m Rendering within layouts/admin Rendering admin/list Rendered admin/\_left\_sidebar (0.00582) ^[[4;35;1mBrand Load (0.002364)^[[0m ^[[0mSELECT \* FROM brands WHERE (brands.`id` = 11) ^[[0m ^[[4;36;1mCategory Load (0.002333)^[[0m ^[[0;1mSELECT \* FROM categories WHERE (categories.`id` = 2) ^[[0m ^[[4;35;1mCategory Load (0.002326)^[[0m ^[[0mSELECT \* FROM categories WHERE (categories.`id` = 1) ^[[0m ^[[4;36;1mTag Columns (0.006939)^[[0m ^[[0;1mSHOW FIELDS FROM tags^[[0m ^[[4;35;1mTag Load (0.004283)^[[0m ^[[0mSELECT \* FROM tags WHERE (tags.`id` = 26) ^[[0m Rendered /admin/\_tabs (0.00646) Completed in 0.38937 (2 reqs/sec) | Rendering: 0.06513 (16%) | DB: 0.11639 (29%) | 200 OK [[http://localhost/admin/list](http://localhost/admin/list)] Mysql::Error: Lost connection to MySQL server during query: SELECT \* FROM sessions WHERE (session\_id = ‘55f84af9071afac179e25506d37fab42’) LIMIT 1 ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ connection\_adapters/abstract\_adapter.rb:128:in `log’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ connection\_adapters/mysql\_adapter.rb:243:in `execute’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ connection\_adapters/mysql\_adapter.rb:399:in `select’ ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ connection\_adapters/abstract/database\_statements.rb:7:in `select\_all’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ base.rb:427:in `find\_by\_sql’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ base.rb:997:in `find\_every’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ base.rb:991:in `find\_initial’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ base.rb:417:in `find’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ session/active\_record\_store.rb:115:in `find\_by\_session\_id’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ session/active\_record\_store.rb:288:in `initialize’^M ./script/…/config/…/vendor/rails/activerecord/lib/active\_record/ base.rb:867:in `silence’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ session/active\_record\_store.rb:288:in `initialize’^M /opt/local/lib/ruby/1.8/cgi/session.rb:273:in `new’^M /opt/local/lib/ruby/1.8/cgi/session.rb:273:in `initialize\_without\_dynamic\_session\_expiration’^M ./script/…/config/…/vendor/plugins/dynamic\_session\_exp/lib/ dynamic\_session\_expiry.rb:34:in `initialize’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ cgi\_process.rb:123:in `new’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ cgi\_process.rb:123:in `session’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ cgi\_process.rb:155:in `stale\_session\_check!‘^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ cgi\_process.rb:110:in `session’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ base.rb:1052:in `assign\_shortcuts\_without\_flash’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ flash.rb:140:in `assign\_shortcuts’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ base.rb:424:in `process\_without\_filters’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ filters.rb:624:in `process\_without\_session\_management\_support’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ session\_management.rb:114:in `process’^M ./script/…/config/…/vendor/rails/actionpack/lib/action\_controller/ base.rb:330:in `process’^M ./script/…/config/…/vendor/rails/railties/lib/dispatcher.rb:41:in `dispatch’^M ./script/…/config/…/vendor/rails/railties/lib/webrick\_server.rb: 113:in `handle\_dispatch’^M ./script/…/config/…/vendor/rails/railties/lib/webrick\_server.rb: 79:in `service’^M /opt/local/lib/ruby/1.8/webrick/httpserver.rb:104:in `service’^M /opt/local/lib/ruby/1.8/webrick/httpserver.rb:65:in `run’^M /opt/local/lib/ruby/1.8/webrick/server.rb:173:in `start\_thread’^M /opt/local/lib/ruby/1.8/webrick/server.rb:162:in `start’^M/opt/local/ lib/ruby/1.8/webrick/server.rb:162:in `start\_thread’^M /opt/local/lib/ruby/1.8/webrick/server.rb:95:in `start’^M /opt/local/lib/ruby/1.8/webrick/server.rb:92:in `each’^M /opt/local/lib/ruby/1.8/webrick/server.rb:92:in `start’^M /opt/local/lib/ruby/1.8/webrick/server.rb:23:in `start’^M /opt/local/lib/ruby/1.8/webrick/server.rb:82:in `start’^M ./script/…/config/…/vendor/rails/railties/lib/webrick\_server.rb: 63:in `dispatch’^M ./script/…/config/…/vendor/rails/railties/lib/commands/servers/ webrick.rb:59^M /opt/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `gem\_original\_require’^M /opt/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `require’^M ./script/…/config/…/vendor/rails/activesupport/lib/active\_support/ dependencies.rb:498:in `require’^M ./script/…/config/…/vendor/rails/activesupport/lib/active\_support/ dependencies.rb:345:in `new\_constants\_in’^M ./script/…/config/…/vendor/rails/activesupport/lib/active\_support/ dependencies.rb:498:in `require’^M ./script/…/config/…/vendor/rails/railties/lib/commands/server.rb: 39^M script/server:3:in `require’^M script/server:3