Oracle Solution for Error ora-19697

Solution for Oracle Error ORA-19697

ORA-19697: standby control file not found in backup set

What triggered the Error:

e standby control file could not be restored because it is not in this backup set.

What should we do to fix it:

is message is issued when the directory from the first backup piece is read and one or more files named for restoration were not found in the piece. You must supply the first backup piece of a backup set that contains the requested file.