Oracle® Database 11g / 12c / 18c error codes IMP-00037: Character set marker unknown

IMP-00037: Character set marker unknown

Oracle Error Code: IMP-00037

Cause: The export file is corrupted.

Action: Try to obtain an uncorrupted version of the export file. If the export file is not corrupted, report this as an Import internal error and submit the export file to customer support.