Best way to store documents and images in a web application

All,
Which is the best way to store the documents, is it Oracle DB or file system or Virtual Directory Mapping in weblogic.
We are working on a Internet based application into CRM domain, there is a requirement where user can upload and download the documents (.pdf, .xls, .doc etc). Right now we are storing images in the DB. Is it advisable to store all the docs in database and will it scale up in future.
PS: There is no scope for using content server because of business constraints.
Please let me know, thanks in advance.
Regards
Girish

Best way to store depends entirely on requirements.
Why store it in the database when it for example is purely static images (e.g. used as part of the web GUI)? Instead that can be served up directly by a web server - which is specifically designed for this.
If it is more than just an image, but include tags (non spatial data attributes), requires transaction control (e.g. updating an old passport/id photo with a newer one), auditing, filtering/searching and ordering, requires backup, needs security and access controls, and so on - than that is most definitely a database function.
So the issue is not what the binary file is or contains - an image or pdf or something else. It depends entirely on how it is to be used and what the business requirements are in this respect.

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