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Is extract for datafile possible ?

Is extract for datafile possible ?

 
 
A few days ago my collegue oracle installation was damaged
(system tabelspace control files etc). Accidentaly Windows Server ntbackup was suspended then dumps which he has are old. Some datafiles looks healthy is any method to restore data ?
 
 
Basically is not possible to reuse or extract data from these datafiles. 
 
Only possibility is to ask Oracle support/consulting... they have a tool named DUL that can read the datafiles and dump the content. Unfortunatelly the tool is not distributed... 
 
 
 
DUL tool...is there any way I can read about this tool or other tools of this kind.
 
a direct unload data tools like DUL : prm-dul http://www.parnassusdata.com/