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Recovering from different datafiles

Recovering from different datafiles

We recently had a disaster scenario. Someone deleted the entire Oracle installation including the backup, all with Linux rm command.
 
We saved the files with some undelete utility (reiserfsck --rebuild-tree). Unfortunately some files are missing or are corrupt.
 
I have all the datafiles, but:
- some of them are 1 day old
- some of them are 2 days old
- two are even 1 month old (SYSTEM and UNDO; basically we have an entire valid backup from 1 month, but that's too old)
 
Is there any way to put these files together so Oracle will work?
 
Is there any tool (except Oracle's DUL) that can extract data from a dbf file into text, CSV, XML, SQL,... anything?
 
The data is extremely important so any help from you Oracle experts would be appreciated.
 
Thanks you very much in advance.
 
 
Answer:
 
PRM-DUL is an alternative DUL option , find it here : http://www.parnassusdata.com/