Disable explain when using jruby because it's not supported. The patch for this support exist but for some reason still not included in latest release of the jdbc adapter. Reference: https://github.com/jruby/activerecord-jdbc-adapter/pull/206

require 'rubygems'

# Set up gems listed in the Gemfile.
ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)

require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])