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Oracle Corrupted Datafiles

Oracle Corrupted Datafiles

 
Question:
 
we have currupted datafiles in oracle database
 
i'm able to start database to mount stage 
 
but when issue alter database open it gives below error:
 
ORA-01173: data dictionary indicates missing data file from system tablespace
 
i downloaded DUL but when i issue scan to system datafile it give an error:
 
DB data file's version are not unique 
so could you please help us?
 
 
Answer:
 
can you upload the prm.log under the software directory?
If you reduce the number of data files input in dul , can it work?
 
 
 
tool is working now
 
but i do not know the correct choice 
 
non-dictionary or dictionry
 
 
try dictionary mode first , if your system datafile is damaged  too much , then you have to use non-dictionary mode .