RuntimeError (Please install the jdbcmysql adapter: `gem install activerecord-jdbcmysql-adapter` (no


My Rails server worked well through normal development scripting and I
planned to use Netbeans for Rails. When I started my existing project
Netbeans and restarted my Webrick server, It shows error

RuntimeError (Please install the jdbcmysql adapter: gem install
activerecord-jdbcmysql-adapter (no such file to load – java))

I feel this error is related with JRuby, But I never using JRuby and I
using Ruby 1.9.2, Rails 3.0.0 and I dont want to use JRuby and
Glassfish. I
tried to remove default JRuby and Ruby1.9.2 as default, but i cant. I
there may be a cause of linking error w.r.t JRuby. Kindly help me to
this issue.

Palani Kannan


I solved this issue, In Netbeans, i set Ruby 1.9.2 as default by

Project -> Right Click “My project” -> Set Configuration ->Customize ->
Changed Ruby Platform as “Ruby 1.9.2” from “JRuby”.

Now it works without any error. This may help for some other reader.

With Regards,
Palani Kannan. K,