BFILE: need advice for best practice

Hi,
I'm planning to implement a document management system. These are my requirements:
(0) Oracle 11gR2 on Windows 2008 server box
(1) Document can be of type Word, Excel, PDF or plain text file
(2) Document will get stored in DB as BFILE in a table
(3) Documents will get stored in a directory structure: action/year/month, i.e. there will be many DB directory objects
(4) User has read only access to files on DB server that result from BFILE
(5) User must check out/check in document for updating content
So my first problem is how to "upload" a user's file into the DB. My idea is:
- there is a "transfer" directory where the user has read/write access
- the client program copies the user's file into the transfer directory
- the client program calls a PL/SQL-procedure to create a new entry in the BFILE table
- this procedure will run with augmented rights
- procedure may need to create a new DB directory (depending on action, year and/or month)
- procedure must copy the file from transfer directory into correct directory (UTL_FILE?)
- procedure must create new row in BFILE table
Is this a practicable way? Is there anything that I could do better?
Thanks in adavance for any hints,
Stefan
Edited by: Stefan Misch on 06.05.2012 18:42

Stefan Misch wrote:
yes, from a DBA point of view...Not really just from a DBA point of view. If you're a developer and you choose BFILE, and you don't have those BFILE's on the file system being backed up and they subsequently go "missing" i would say you (the developer) are at fault for not understanding the infrastructure you are working within.
Stefan Misch wrote:
But what about the posibility for the users to browse their files?. This would mean I had to duplicate the files: one copy that goes into the DB and is stored as BLOB and can be used to search. Another copy will get stored on the file system just to enable the user to browse their files (i.e. what files where created for action "offers" in february 2012. The filenames contain customer id and name as well as user id). In most cases there will be less that 100 files in any of those directories.
This is why I thought a BFILE might be the best alternative as I get both: fast index search and browsing capability for users that are used to use windows explorer...Sounds like it would be simple enough to add some metadata about the files in a table. So a bunch of columns providing things like "action", "Date", "customer id", etc.... along with the document stored in a BLOB column.
As for the users browsing the files, you'd need to build an application to interface with the database ... but i don't see how you're going to get away from building an application to interface with the database for this in any event.
I personally wouldn't be a fan of providing users any sort of access to a production servers file system, but that could just be me.

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