我将我的开发数据库从 SQLite 切换到了 postgresql。我的应用程序在开发和生产（Heroku、postgresql）中都可以工作，但现在我无法在新的 postgresql 开发数据库中修改、删除或创建记录。用户只能正确登录、查看他们的个人资料信息和注销。
创建用户时出错：
ActiveRecord::StatementInvalid in Devise::RegistrationsController#create
Errno::EBADF: Bad file descriptor - rb_thread_select(): INSERT INTO "users" ("field1", "field2", "field3", ...etc continues through..., "Field28") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22, $23, $24, $25, $26, $27, $28) RETURNING "id"
删除用户错误：
ActiveRecord::StatementInvalid in Devise::RegistrationsController#destroy
Errno::EBADF: Bad file descriptor - rb_thread_select(): DELETE FROM "users" WHERE "users"."id" = $1
这一切都在生产中正确运行。
我在 Windows 7 上使用 Cygwin 并使用 pgAdmin Windows 包安装 postgresql。
我使用以下方法创建了 4 次不同的新数据库，所有这些方法都产生了与上述相同的结果。
在 pgAdmin 中创建了一个空数据库并使用
rake db:migrate正确创建了字段，但应用程序无法创建记录。在 pgAdmin 中创建了一个空数据库，然后使用
db:schema:load与 #1 相同的结果。在 pgAdmin 中创建了一个空数据库。用于从我的生产应用程序
pgbackups创建一个文件，然后用于新的空数据库。一切看起来都不错，字段和记录，但仍然无法修改、删除或创建。只能登录，并查看用户个人资料。.dumppgrestore按照Railscast #342 迁移到 PostgreSQL使用所有步骤，包括 Taps Gem，完全按照 4:40 开始的描述。同样，所有字段和记录看起来都不错，但行为与 #3 相同。
我可以通过 pgAdmin GUI 或psql mydatabase命令行直接与数据库交互。
数据库.yml
development:
adapter: postgresql
encoding: unicode
database: devdatabase
pool: 5
username: postgres
password: 'password'
test:
adapter: postgresql
encoding: unicode
database: testdatabase
pool: 5
username: postgress
password: 'password'
我的 postgresql 日志显示成功连接到数据库：
2013-04-18 15:12:09 EDT LOG: database system was shut down at 2013-04-18 15:03:00 EDT
2013-04-18 15:12:09 EDT LOG: database system is ready to accept connections
2013-04-18 15:12:09 EDT LOG: autovacuum launcher started
2013-04-18 15:12:10 EDT LOG: connection received: host=::1 port=58635
2013-04-18 15:13:14 EDT LOG: connection received: host=::1 port=58637
2013-04-18 15:13:14 EDT LOG: connection authorized: user=postgres database=brdevelopment
2013-04-18 15:13:25 EDT LOG: connection received: host=::1 port=58653
2013-04-18 15:13:25 EDT LOG: connection authorized: user=postgres database=brdevelopment
2013-04-18 15:18:32 EDT LOG: received fast shutdown request
2013-04-18 15:18:32 EDT LOG: aborting any active transactions
2013-04-18 15:18:32 EDT LOG: autovacuum launcher shutting down
2013-04-18 15:18:32 EDT LOG: shutting down
2013-04-18 15:18:32 EDT LOG: database system is shut down
我的应用程序日志显示成功的用户登录、注销和查看配置文件的请求。它还显示了用户如何通过单击确认电子邮件中的链接成功更改密码。当用户尝试更改其个人资料、删除其帐户或新用户尝试注册时，它还会显示错误。错误：
Rendered /home/Pavilion/.rvm/gems/ruby-1.9.3-p374/gems/actionpack-3.2.11/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms)
Rendered /home/Pavilion/.rvm/gems/ruby-1.9.3-p374/gems/actionpack-3.2.11/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (2.0ms)
Rendered /home/Pavilion/.rvm/gems/ruby-1.9.3-p374/gems/actionpack-3.2.11/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (42.0ms)
Connecting to database specified by database.yml
Connecting to database specified by database.yml
...
Started DELETE "/users" for 127.0.0.1 at 2013-04-18 15:14:20 -0400
Processing by Devise::RegistrationsController#destroy as HTML
Parameters: {"authenticity_token"=>"xxxxx="}
[1m[35mUser Load (0.0ms)[0m SELECT "users".* FROM "users" WHERE "users"."id" = 57 LIMIT 1
[1m[36m (0.0ms)[0m [1mBEGIN[0m
[1m[35mSQL (1.0ms)[0m DELETE FROM "users" WHERE "users"."id" = $1 [["id", 57]]
Errno::EBADF: Bad file descriptor - rb_thread_select(): DELETE FROM "users" WHERE "users"."id" = $1
[1m[36m (0.0ms)[0m [1mROLLBACK[0m
Completed 500 Internal Server Error in 5ms
ActiveRecord::StatementInvalid (Errno::EBADF: Bad file descriptor - rb_thread_select(): DELETE FROM "users" WHERE "users"."id" = $1):
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activerecord (3.2.11) lib/active_record/connection_adapters/postgresql_adapter.rb:1165:in `exec_cache'
activerecord (3.2.11) lib/active_record/connection_adapters/postgresql_adapter.rb:674:in `block in exec_delete'
activerecord (3.2.11) lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
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activerecord (3.2.11) lib/active_record/connection_adapters/postgresql_adapter.rb:672:in `exec_delete'
activerecord (3.2.11) lib/active_record/connection_adapters/abstract/database_statements.rb:101:in `delete'
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activerecord (3.2.11) lib/active_record/relation.rb:413:in `delete_all'
activerecord (3.2.11) lib/active_record/persistence.rb:141:in `destroy'
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actionpack (3.2.11) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
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activesupport (3.2.11) lib/active_support/notifications.rb:123:in `instrument'
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railties (3.2.11) lib/rails/rack/log_tailer.rb:17:in `call'
rack (1.4.5) lib/rack/handler/webrick.rb:59:in `service'
/home/Pavilion/.rvm/rubies/ruby-1.9.3-p374/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/Pavilion/.rvm/rubies/ruby-1.9.3-p374/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/Pavilion/.rvm/rubies/ruby-1.9.3-p374/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
...
Started POST "/users" for 127.0.0.1 at 2013-04-18 15:15:23 -0400
Processing by Devise::RegistrationsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"xxxxx=", "user"=>{"email"=>"me@example.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"}
[1m[36m (1.0ms)[0m [1mBEGIN[0m
[1m[35mUser Exists (0.0ms)[0m SELECT 1 AS one FROM "users" WHERE "users"."email" = 'me@example.com' LIMIT 1
[1m[36mUser Load (0.0ms)[0m [1mSELECT "users".* FROM "users" WHERE "users"."confirmation_token" = 'xxxxx' LIMIT 1[0m
[1m[35mSQL (1.0ms)[0m INSERT INTO "users" ("confirmation_sent_at", "confirmation_token", "confirmed_at", "created_at", "current_sign_in_at", "current_sign_in_ip", "description", "email", "encrypted_password", "first_name", "headline", "image", "industry", "last_name", "last_sign_in_at", "last_sign_in_ip", "location", "name", "nickname", "provider", "public_profile", "remember_created_at", "reset_password_sent_at", "reset_password_token", "sign_in_count", "uid", "unconfirmed_email", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22, $23, $24, $25, $26, $27, $28) RETURNING "id" [["confirmation_sent_at", Thu, 18 Apr 2013 19:15:23 UTC +00:00], ["confirmation_token", "xxxxx"], ["confirmed_at", nil], ["created_at", Thu, 18 Apr 2013 19:15:23 UTC +00:00], ["current_sign_in_at", nil], ["current_sign_in_ip", nil], ["description", nil], ["email", "me@example.com"], ["encrypted_password", "xxxxx"], ["first_name", nil], ["headline", nil], ["image", nil], ["industry", nil], ["last_name", nil], ["last_sign_in_at", nil], ["last_sign_in_ip", nil], ["location", nil], ["name", nil], ["nickname", nil], ["provider", nil], ["public_profile", nil], ["remember_created_at", nil], ["reset_password_sent_at", nil], ["reset_password_token", nil], ["sign_in_count", 0], ["uid", nil], ["unconfirmed_email", nil], ["updated_at", Thu, 18 Apr 2013 19:15:23 UTC +00:00]]
Errno::EBADF: Bad file descriptor - rb_thread_select(): INSERT INTO "users" ("confirmation_sent_at", "confirmation_token", "confirmed_at", "created_at", "current_sign_in_at", "current_sign_in_ip", "description", "email", "encrypted_password", "first_name", "headline", "image", "industry", "last_name", "last_sign_in_at", "last_sign_in_ip", "location", "name", "nickname", "provider", "public_profile", "remember_created_at", "reset_password_sent_at", "reset_password_token", "sign_in_count", "uid", "unconfirmed_email", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22, $23, $24, $25, $26, $27, $28) RETURNING "id"
[1m[36m (1.0ms)[0m [1mROLLBACK[0m
Completed 500 Internal Server Error in 469ms
ActiveRecord::StatementInvalid (Errno::EBADF: Bad file descriptor - rb_thread_select(): INSERT INTO "users" ("confirmation_sent_at", "confirmation_token", "confirmed_at", "created_at", "current_sign_in_at", "current_sign_in_ip", "description", "email", "encrypted_password", "first_name", "headline", "image", "industry", "last_name", "last_sign_in_at", "last_sign_in_ip", "location", "name", "nickname", "provider", "public_profile", "remember_created_at", "reset_password_sent_at", "reset_password_token", "sign_in_count", "uid", "unconfirmed_email", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22, $23, $24, $25, $26, $27, $28) RETURNING "id"):
...
Started DELETE "/users" for 127.0.0.1 at 2013-04-18 15:17:25 -0400
Processing by Devise::RegistrationsController#destroy as HTML
Parameters: {"authenticity_token"=>"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx="}
[1m[35mUser Load (1.0ms)[0m SELECT "users".* FROM "users" WHERE "users"."id" = 57 LIMIT 1
[1m[36m (3.0ms)[0m [1mBEGIN[0m
[1m[35mSQL (0.0ms)[0m DELETE FROM "users" WHERE "users"."id" = $1 [["id", 57]]
Errno::EBADF: Bad file descriptor - rb_thread_select(): DELETE FROM "users" WHERE "users"."id" = $1
[1m[36m (1.0ms)[0m [1mROLLBACK[0m
Completed 500 Internal Server Error in 7ms
ActiveRecord::StatementInvalid (Errno::EBADF: Bad file descriptor - rb_thread_select(): DELETE FROM "users" WHERE "users"."id" = $1):
为什么我不能从我新创建的开发数据库中获得全部功能，而一切都在生产中正常工作？我从我的研究中了解到，在开发和生产中拥有相同的数据库非常重要。
我是新手，正在学习 ruby、rails、数据库和 postgresql。stackoverflow 非常有帮助。