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About Oracle Recovery

About Oracle Recovery

I want to recover our some oracle dbf and tried DUL5.1.
But something wrong.
log is nelow:
 
 
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PRM:  Warning: scaned 10MB data, couldn't find file header for users.dbf
DB file version info:
File: users.dbf, db version: 0
File is not exist: mlkj
 
 
how about the db version? is the dbf header corrupted? 
 
can you unload this datafile?
 
and would you like to try with this video ?  https://www.youtube.com/watch?v=jOT6k-KF8Hg
 
 
 
db version is 9.
I tried the video.
but we lost SYSTEM01.DBF.
 
you can use non-dictionary mode , and specify the TS# and file# for that datafile .
 
 
 
scan was finished successfully.
but trees are  DB_20190721191326 - lob segment
and lob segment is empty.
 
 
right click the DB_20190721191326 and select scan extent , then you may get some table.
 
 
 
I could get some table!!
but it is garbled.
and Can I get these data?
 
right click the table ,you can unload the data into file or data bridge them to another Oracle db.