Hi Matthew, This is the second time this lost connection issue is reported on this list, see http://dev.eclipse.org/mhonarc/lists/epf-dev/msg03701.html. I am going to check the logs of http://epf.eclipse.org to see if I can find out more. I will report back my findings. Best Regards, Onno
On Wed, May 18, 2011 at 12:36 PM, Matthew Austin <[email protected]>wrote: > > Hello, > > We're having some seemingly random but persistent errors on our wiki, and > wonder if this has been experienced by anyone else, and maybe if there's a > fix. > > Our database is being hosted on a MySQL server, and we are using LDAP > rather than basic authentication. > > We often get errors that look like the following: > > Mysql::Error: Lost connection to MySQL server during query: SHOW FIELDS > FROM `pages` > > These often arise when clicking on the Home tab, or clicking the browser's > back button to get back to the Home tab. They are sometimes exhibiting > themselves as 500 Internal Server Errors. They don't always pertain to the > same database field, and they don't appear all the time, just sporadically. > > I've attached the last number of lines from the log file to show a typical > error, and the backtrace from the auto-generated email is below. > > Is this purely a database issue? Any help or advice is appreciated! > > Matt Austin > > <<500error.txt>> > > *Error report from Wed May 18 10:07:56 +0000 2011* > Message Mysql::Error: Lost connection to MySQL server during query: SHOW > FIELDS FROM `pages` > Location > *http://10.35.1.105:3005/portal/home*<http://10.35.1.105:3005/portal/home> > > Action home > Controller portal > Query > Method GET > SSL false > Agent Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) > Gecko/20101203 Firefox/3.6.13 > *Backtrace* > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract_adapter.rb:150:in > `log' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/mysql_adapter.rb:281:in > `execute' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/mysql_adapter.rb:411:in > `columns' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1080:in > `columns' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1088:in > `columns_hash' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/attribute_methods.rb:63:in > `define_attribute_methods' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/attribute_methods.rb:187:in > `method_missing' > /app/models/wiki_page.rb:153:in `current_version' > /app/models/site.rb:82:in `templates' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/associations/association_proxy.rb:125:in > `each' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/associations/association_proxy.rb:125:in > `send' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/associations/association_proxy.rb:125:in > `method_missing' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/associations/association_collection.rb:162:in > `method_missing' > > /app/models/site.rb:81:in `templates' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/core_ext/object/misc.rb:28:in > `returning' > /app/models/site.rb:80:in `templates' > /app/controllers/portal_controller.rb:33:in `home' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in > `send' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in > `perform_action_without_filters' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in > `call_filters' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:689:in > `perform_action_without_benchmark' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in > `perform_action_without_rescue' > > /apps/epfwiki/lib/ruby/1.8/benchmark.rb:293:in `measure' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in > `perform_action_without_rescue' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/rescue.rb:199:in > `perform_action_without_caching' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in > `perform_action' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in > `cache' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in > `cache' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:677:in > `perform_action' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in > `send' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in > `process_without_filters' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in > `process_without_session_management_support' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/session_management.rb:123:in > `process' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in > `process' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:171:in > `handle_request' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in > `dispatch' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in > `dispatch_cgi' > /apps/epfwiki/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in > `dispatch' > /apps/epfwiki/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:112:in > `handle_dispatch' > /apps/epfwiki/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:78:in > `service' > /apps/epfwiki/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' > /apps/epfwiki/lib/ruby/1.8/webrick/httpserver.rb:65:in `run' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:162:in `start' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:95:in `start' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:92:in `each' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:92:in `start' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:37:in `start' > /apps/epfwiki/lib/ruby/1.8/webrick/server.rb:82:in `start' > /apps/epfwiki/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/webrick_server.rb:62:in > `dispatch' > > /apps/epfwiki/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/webrick.rb:66 > /apps/epfwiki/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `gem_original_require' > /apps/epfwiki/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `require' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in > `require' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in > `new_constants_in' > /apps/epfwiki/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in > `require' > /apps/epfwiki/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39 > /apps/epfwiki/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `gem_original_require' > /apps/epfwiki/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `require' > script/server:3 > > *______________________________________________* > *Matthew Austin -* Consultant > *t* +44 (0)20 7812 4034 |*** m* +44 (0)77 4553 5665 > ***a* Detica | 2 Arundel Street | London | WC2R 3AZ | UK > *______________________________________________* > ***www.detica.com* <http://www.detica.com/>** > > Please consider the environment before printing this email. > > This message should be regarded as confidential. If you have received this > email in error please notify the sender and destroy it immediately. > Statements of intent shall only become binding when confirmed in hard copy by > an authorised signatory. The contents of this email may relate to dealings > with other companies within the Detica Limited group of companies. > > Detica Limited is registered in England under No: 1337451. > > Registered offices: Surrey Research Park, Guildford, Surrey, GU2 7YP, England. > > > > _______________________________________________ > epf-dev mailing list > [email protected] > https://dev.eclipse.org/mailman/listinfo/epf-dev > >
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