Since there are several variations of docs on this (some of which are out of date) I figured I'd document this.

  1. Download and install the Ruby interface from http://rubyforge.org/projects/ruby-oci8/
  2. Then, in your config/database.yml file, you should have something like this:

If you're running Rails with JRuby you should have the Oracle JDBC drivers in the classpath and the entry above will be a little different: