Message Oracle IMP-00085 - multiple input files specified for unbounded export file

ERRORmultiple input files specified for unbounded export file
CAUSEYou specified multiple file names for the FILE parameter when doing an import, but the header in the export file indicates that that the export operation could create only one file. Specifying multiple file names is valid for an import operation only if the export files were created by an export operation in which the user specified a non-zero value for the FILESIZE parameter.
ACTIONIf you believe the export contains multiple files, verify that you have specified the correct files. If you believe the export should be in only one file then try the import operation again, but specify only one value for the FILE parameter.