Rails Heroku Migration Stuck

Question

在大约30分钟前推送到heroku之后,我们似乎无法在rails控制台中执行任何操作或执行迁移.

我能够做到 heroku run rake db:migrate

它似乎开始:

heroku run rake db:migrate
Running rake db:migrate on app... up, run.8092
  ActiveRecord::SchemaMigration Load (1.4ms)  SELECT "schema_migrations".* FROM "schema_migrations"
Migrating to AddQuestionsCountToCampaigns (20160215204320)
   (0.9ms)  BEGIN
== 20160215204320 AddQuestionsCountToCampaigns: migrating =====================
-- add_column(:campaigns, :questions_count, :integer)

但它只是挂在那里,从未真正完成.

同样我可以连接到导轨C,但我不能做任何事情像Campaign.new或Campaign.last.它只是挂在那里:

Loading production environment (Rails 4.2.0)
irb(main):001:0> Campaign.new

从来没有做过任何事.

可能会发生什么想法？分期工作正常.日志似乎也在工作,我没有看到任何崩溃.我也试过了heroku restart,这似乎没有帮助.

添加迁移:

class AddQuestionsCountToCampaigns < ActiveRecord::Migration
  def change
    add_column :campaigns, :questions_count, :integer
    add_index :campaigns, :questions_count
  end
end

Answer 1

备查:

麻烦是打开了太多的pg连接(在rails控制台中运行`Campaign.count失败:说连接太多了).

解决方案是运行pg:killall并重新运行迁移