OCI-19731
        cannot apply change to unverified plugged in data file string
        
        
        Cause
        Recovery was not able to verify the specified data file according to information in the control file. Before encountering the change vector for this file, recovery did not find the file conversion redo required to verify this file. This may happen due to a corrupted or incorrect control file used for media recovery.
        Action
        Use the correct control file and continue recovery.
        
     
    
    
        OCI-19731
        cannot apply change to unverified plugged-in datafile string
        
        
        Cause
        Recovery was not able to verify the referred datafile according to information in the control file.  Before encountering this change vector for this file, somehow recovery did not encounter the file conversion redo that is supposed to verify the file. This may happen due to corrupted or incorrect control file used for media recovery.
        Action
        Use the correct control file and continue recovery.
        
     
    
    
        OCI-19731
        cannot apply change to unverified plugged-in datafile string
        
        
        Cause
        Recovery was not able to verify the referred datafile according to information in the control file.  Before encountering this change vector for this file, somehow recovery did not encounter the file conversion redo that is supposed to verify the file. This may happen due to corrupted or incorrect control file used for media recovery.
        Action
        Use the correct control file and continue recovery.