ORA- 00205  error in identifying controlfile, check alert log for more info
Cause: The system could not find a control file of the specified name and size.
Action: One of the following:
n Check that the proper control file name is referenced in the
CONTROL_FILES initialization parameter in the initialization parameter
file and try again.
n When using mirrored control files, that is, more than one control file is
referenced in the initialization parameter file, remove the control file name
listed in the message from the initialization parameter file and restart the
instance. If the message does not recur, remove the problem control file
from the initialization parameter file and create another copy of the control
file with a new file name in the initialization parameter file.