Help - Oracle RAW(>255) for image data

In porting my app from SQLServer (and Access) to Oracle, I need to
create a RAW column for storing an image. I cannot use a LONG RAW column
as there is already a LONG VARCHAR for text, so I want to create a RAW
column with the maximum size. The documenation says this is 2000 bytes
but any attampt to create the column with more than 255 chars generates
an error.

Does anyone know how to get Oracle to create a RAW(2000) column?
Tony Lavelle
Hyrax Computer Systems Ltd, UK
(remove .spamtrap from return address before replying)