The following is the ORA-00234 error message, you can learn the cause and solution of the Oralce error.
ORA-00234 error in identifying or opening snapshot or copy controlfile
Cause: A snapshot or copy control file of the specified name could not be found or opened during an invocation of cfileUseSnapshot, cfileMakeAndUseSnapshot, or cfileUseCopy.
Solution: Re-create the snapshot or copy control file using cfileMakeAndUseSnapshot or ALTER DATABASE BACKUP CONTROLFILE, respectively.
Please wait for the update…