Problem running rails with oracle

[Fernand Galiana]

Hi,

I am trying to run rails with Oracle9 on a Linux box. I have installed
oracle instantclient. When I start Webrick I am getting the following error:

/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.12.1.1.2736/lib/active_record/connection_adapters/oci_adapter.rb:332:
undefined method
'define_a_column' for class 'OCI8::Cursor' (NameError)

I have installed the OCI driver and I am running ruby 1.8 and have
updated rails to the latest include dependencies.

What am I missing ?

Also anyone out there knows of a good installation guide for apache2 +
fcgi + rails on a Linux box ?

Thanks you all,
Fernand