A few days ago I decided to download the Fat Free CRM, an open source Rails based CRM platform. In order to get it going with sqlite3 with JRuby on Rails, there were a couple things I needed to do in order to get started. This solution can be used for any general jruby/rails/sqlite3 that you may have; I only mention this particular application to give some context to the problem.
First of all, you’ll need to install a couple gems.
sudo jruby -S gem install jdbc-sqlite3 sudo jruby -S gem install activerecord-jdbcsqlite3-adapter
Next, you’ll need to configure your config/database.yml file to use the appropriate driver for sqlite3.
development: adapter: jdbcsqlite3 database: db/development.sqlite3 timeout: 5000
That should solve any dreaded “no such file to load” errors that you encounter.