Oracle : Ошибка ORA-19620

"%s is not of %s type"
*Cause: When opening the file to be placed in a copy or backup set,
to be inspected, or used as the target for
an incremental restore, its header was not
recognized as a valid file header for a file of the indicated
type (datafile, archived log, or control file) belonging
to the current database.
*Action: The indicated file cannot be processed. Ensure that the correct
files are being specified for the copy or backup operation.

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