1 files changed, 3 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/railtie.rb b/activerecord/lib/active_record/railtie.rb
index 08cf9fb504..96dc258288 100644
--- a/activerecord/lib/active_record/railtie.rb
+++ b/activerecord/lib/active_record/railtie.rb
@@ -72,7 +72,9 @@ module ActiveRecord
     # and then establishes the connection.
     initializer "active_record.initialize_database" do |app|
       ActiveSupport.on_load(:active_record) do
-        self.configurations = app.config.database_configuration
+        unless ENV['DATABASE_URL']
+          self.configurations = app.config.database_configuration
+        end
         establish_connection
       end
     end