"cannot apply change to unverified plugged-in datafile %s"
*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.