If you upgrade to the mysql2 gem, you will run into the problem that the server's database.yml (which is usually not under version control) needs to change exactly on deploy.
You can however make your database.yml work for mysql and mysql2 at the same time. Simpy do this
production:
adapter: <%= defined?(Mysql2) ? 'mysql2' : 'mysql' %>
#...
Posted by Tobias Kraze to makandra dev (2012-06-15 14:31)