的ActiveRecord :: StatementInvalid（RuntimeError：連接不能在派生進程

Question

嗨，我使用CANCAN Gem用戶角色和

database ->oracle 
oracle adaptor - > oracle_enhanced_adaptor 1.4.1 
ruby 1.9.3 
rails 3.2.16 
web server -> unicorn 

當我一段時間（2〜3分鐘）後刷新broser重複使用它。讓我們ActiveRecord::StatementInvalid (RuntimeError: The connection cannot be reused in the forked process.：

任何人都幫我

Answer 1

我發現從谷歌社區

dbconfig = ActiveRecord::Base.remove_connection 
child_pid = fork do 
# establish new db connection for forked child 
    ActiveRecord::Base.establish_connection(dbconfig) 
    # do stuff... 
end 
# re-establish db connection 
ActiveRecord::Base.establish_connection(dbconfig) 
# detach the process so we don't wait for it 
Process.detach(child_pid) 

一個答案environment.rb文件，它就像一個魅力

Answer 2

您需要添加到您的unicorn.rb文件

#config/unicorn.rb 
after_fork do |server, worker| 
    defined?(ActiveRecord::Base) && ActiveRecord::Base.establish_connection 
end 

並且您可以使用命令unicorn -c config/unicorn.rb運行服務器以使用該配置。