prologue I implement Rjb-JDBC adapter, based on JRuby jdbc adapter(gem search --remote jdbc). This is very mock up code. I have little incentive to more. Please test your self and use this code. usage save such a place that "/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/rjb_jdbc_adapter.rb" Open "active_record.rb", 'rjb_jdbc' append to RAILS_CONNECTION