uninitialized class variable @@env in OCI8

Can someone help me with this error?

Started GET "/comics" for 3.134.140.40 at 2011-06-16 09:33:12 -0400   Processing by ComicsController#index as HTML   ←[1m←[35mComic Load (2.0ms)←[0m SELECT comics.* FROM comics Rendered comics/index.html.erb within layouts/application (1.0ms) Completed 500 Internal Server Error in 25ms

ActionView::Template::Error (uninitialized class variable @@env in OCI8):     12:     13: <% @comics.each do |comic| %>     14: <tr>     15: <td><%= comic.title %></td>     16: <td><%= comic.issue %></td>     17: <td><%= comic.publisher %></td>     18: <td><%= link_to 'Show', comic %></td>   app/views/comics/index.html.erb:15:in `block in _app_views_comics_index_html_erb__444977452_38484516__909189289'   app/views/comics/index.html.erb:13:in `each'   app/views/comics/index.html.erb:13:in `_app_views_comics_index_html_erb__444977452_38484516__909189289'   app/controllers/comics_controller.rb:7:in `index'

Rendered D:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.0.8/lib/ action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms) Rendered D:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.0.8/lib/ action_dispatch/middleware/templates/rescues/_request_and_response.erb (95.1ms) Rendered D:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.0.8/lib/ action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (145.1ms