我使用的8.1.3.26版本测试正常，如下

dmdba@k001 [pwd:~]$ dmfldr userid=sysdba/SYSDBA:5238 control=\'csdmfdr_gbk.ctl\' character_code=\'gbk\'
dmfldr V8
Control file: 

Loaded rows: All

Rows per commit to server: 50000

Rows to skip: 0

Errors count allowed: 100

Whether to load direct: Yes

Whether to insert identity column: No

Whether data is sorted by cluster index: No

Character sets:GBK



Data file counts: 1
csdmfdr_gbk.txt

Error file :fldr.bad

Dest table :TTT

Column Name                                                                                                                      Packed data type     End
NAME                                                                                                                             CHARACTER            |

row buffer number is: 16
task thread number is: 16

4 rows committed

Dest table :TTT
load success.
4 rows loaded success.
0 rows not loaded due to data error.
0 rows not loaded due to data format error.

Skip logic record counts: 0
Read logic record counts: 4
Refuse logic record counts: 0

14.872(ms) time used.