Displaying Images Stored in database as Oracle Long Format

hi list,

How do i render an image stored in the database in Oracle Long format?

In controller

def logo
@trademark = Trademark.find(“TT/M/1/36517”)
send_data @trademark.logo.sector_data.to_blob
, :filename => “logo.jpg”, :type => “image/jpeg”, :disposition => “inline”
end

in view
Image

browser
Image is not being rendered in the browser.

Regards,
Leon leslie.