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Asked: 2026-05-21T02:29:58+00:00

I’m trying to upload my Rails 3 application to real production environment. (The application

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I’m trying to upload my Rails 3 application to real production environment. (The application works perfectly on my local machine).

When I run rails c I got the following error:

/home/misha_moroshko/.gems/gems/activerecord-3.0.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:62:in `establish_connection': development database is not configured (ActiveRecord::AdapterNotSpecified)
        from /home/misha_moroshko/.gems/gems/activerecord-3.0.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:55:in `establish_connection'
        from /home/misha_moroshko/.gems/gems/activerecord-3.0.1/lib/active_record/railtie.rb:59
        from /home/misha_moroshko/.gems/gems/activesupport-3.0.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'

How should I tell Rails that it should work with the production database rather than the development one ?

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1 Answer

  1. Editorial Team

    Set the RAILS_ENV environment variable first, or pass it to the rails c command:

    RAILS_ENV=production rails c

    OR

    rails c production
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