How do I write an uploaded file from ejb3 app to Oracle directory.

Answer 1

Now that you have explained yourself it is apparent that your real question is how to transfer a file from the client to the server. The solution to this is ftp.

If you want to call ftp from within the database there are a number of possible ways of doing it. Tim Hall covers this topic on his Oracle-Base site. He has written an ftp implementation in PL/SQL: get the package spec and package body.