How to read over 2000 characters in a data file?

I want to use text_io packages to read data file content in Form 4.5. I declare a variable to hold each line input as varchar2(2000). (since the max. characters hold in varchar2 is 2000) If a row in the data file is over 2000 characters, how can I read such line with text_io package in Form 4.5?

Thanks,
Jimmy Received on Mon Oct 27 1997 - 00:00:00 CST