ORA-19620: string is not of string type

admin

ORA-19620: string isnot of string type
Cause: When opening the file to be placed in a copy or backupset, 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: Theindicated file cannot be processed. Ensure that the correct files are
being specified for the copy or backup operation.