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Editorial Team
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Asked: 2026-05-31T13:21:35+00:00

Is it possible to disable the new the explain functionality in Rails 3.2 globally

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Is it possible to disable the new the explain functionality in Rails 3.2 globally via configuration? I’m using activerecord-sqlserver-adapter 3.2.1 and there appear to be some bugs with the explain (show plan) portion of the gem.

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1 Answer

  1. Editorial Team

    To cite from http://weblog.rubyonrails.org/2011/12/6/what-s-new-in-edge-rails-explain/

    New applications get

    config.active_record.auto_explain_threshold_in_seconds = 0.5

    in config/environments/development.rb. Active Record monitors queries and if they take more than that threshold their query plan will be logged using warn.

    […]

    By default the threshold is nil in the test and production environments, which means the feature is disabled.

    so just set

    config.active_record.auto_explain_threshold_in_seconds = nil
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