问Rails db:migrate:reset producing：：EACCES权限被拒绝@unlink_internal

EN

我正在遵循Michael Hartl的Rails教程，在某些情况下，我们将运行

rails db:migrate:reset

但是，每次我尝试这样做时，都会遇到有关该文件的权限被拒绝的错误

development.sqlite3

我已经尝试了我遇到的以下解决方案：

1. close all programs suspected of using said file and retry task

2. terminate rails console, server, editor and retry task

3. shut/restart pc and executing the task upon restart

4. executing rails db:drop

所有这些都无法允许该命令运行。唯一可行的解决方案是手动删除文件并运行rails db:migrate

我在跑步

Rails 5.0.0.1

Ruby 2.2.5p319

Sqlite3 3.14.1

Windows 10专业版

我的堆栈跟踪是：

** Invoke db:migrate:reset (first_time)

**调用db:drop (first_time)

**调用db:load_config (first_time)

**执行db:load_config

**调用db:check_protected_environments (first_time)

**调用环境(first_time)

**执行环境

**调用db:load_config

**执行db:check_protected_environments

**执行db:drop

**调用db:drop:_unsafe (first_time)

**调用db:load_config

**执行db:drop:_unsafe

权限被拒绝@ unlink_internal - %path%/sample_app/db/development.sqlite3无法删除数据库'db/development.sqlite3‘

rails已中止！

错误：：EACCES:权限被拒绝@ unlink_internal - %path%/sample_app/db/development.sqlite3

C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:1450:in unlink'

Remove_file中的C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:1450:in块

C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:1458:in platform_support'

C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:1449:inremove_file的

C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:793:in remove_file'

rm中的C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:571:in块

C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:570:in each'

C:/Ruby22-x64/lib/ruby/2.2.0/fileutils.rb:570:inrm‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/sqlite_database_tasks.rb:22:in drop'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/database_tasks.rb:136:in丢弃‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/database_tasks.rb:152:in block in drop_current'

Each_current_configuration中的C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/database_tasks.rb:292:in块

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/database_tasks.rb:291:in each'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/database_tasks.rb:291:ineach_current_configuration的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/tasks/database_tasks.rb:151:in drop_current'

‘中的C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/railties/databases.rake:42:in块(2层)

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:248:in call'

execute‘中的C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:248:in块

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:243:in each'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:243:in执行‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:187:in block in invoke_with_call_chain'

C:/Ruby22-x64/lib/ruby/2.2.0/monitor.rb:211:inmon_synchronize的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:180:in invoke_with_call_chain'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:173:ininvoke‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.0.1/lib/active_record/railties/databases.rake:38:in block (2 levels) in <top (required)>'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:248:in调用‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:248:in block in execute'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:243:ineach‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:243:in execute'

Invoke_with_call_chain中的C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:187:in块

C:/Ruby22-x64/lib/ruby/2.2.0/monitor.rb:211:in mon_synchronize'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:180:ininvoke_with_call_chain的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:209:in block in invoke_prerequisites'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:207:ineach‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:207:in invoke_prerequisites'

Invoke_with_call_chain中的C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:186:in块

C:/Ruby22-x64/lib/ruby/2.2.0/monitor.rb:211:in mon_synchronize'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:180:ininvoke_with_call_chain的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/task.rb:173:in invoke'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:152:ininvoke_task的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:108:in block (2 levels) in top_level'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:108:ineach‘

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:108:in block in top_level'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:117:inrun_with_threads的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:102:in top_level'

Run_rake_task中的C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/rake_proxy.rb:13:in块

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rake-11.2.2/lib/rake/application.rb:178:in standard_exception_handling'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/rake_proxy.rb:10:inrun_rake_task的

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:51:in run_command!'

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in的

bin/rails:4:在require'中

bin/rails:4:in的

任务: TOP => db:drop:_unsafe

如何删除此错误并防止在将来的项目中出现此错误？