Uncommenting a line in environment.rb file

Hi, I am a newbee to rubyonrails. I was given task of migration of
database from mysql to oracle for a ror application.

My probelm is when I go into my environment.rb file and uncomment the;

config.action_controller.session_store = :active_record_store

my application doesnt work atall. I do have a sessions table but the
sessions table data is not being updated with the latest time and date.
Before this application was working with MySql database, it was working
properly, but now am using oracle and its not working.

And if I comment it,

#config.action_controller.session_store = :active_record_store

the application is working fine. But I need sessions for my entire
Can you please suggest how I should proceed?

Chances are you your session data field is an Oracle clob type
(especially if you used `rake db:sessions:create`).

That won't work in Oracle, it needs to be a string type.

In your sessions migration, change

t.text :data


t.string :data, :limit => 4000

More info here: http://destiney.com/blog/moving-a-rails-app-from-1-2-6-2-0-2

I even tried that but my application is still not working...!
But my data field in sessions table is filled with its values.