Odd Chinese characters will be unreadable, even numbers will not

Can you go to Help > Support Info and send me the text from the information page?

Plyxon
------
Plyxon Version 0.9.1.510 (64 bit)
License: Alpha, Expiration Date: 2024/3/1 (108 days left)

Running Time: 0:00:13

ExePath: C:\Program Files\Plyxon
Documents: C:\Users\miaoc\Documents\Plyxon
Resources: C:\Program Files\Plyxon
Settings: C:\Users\miaoc\AppData\Roaming\Plyxon

Color Theme: Dark

System
------
Windows 11 (Version 23H2, OS Build 22631.2506, 64-bit Edition)
Language ID: China
Scale: 100%
Resolution: 1920 x 1080
Displays: 1
Display 1: 100% 1920 x 1080

Oracle
------
Connected as: sso_qa@kmpex
Server Version: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0

Library: D:\Program Files\ORACLE_client_home\bin\oci.dll
Version: 19.3.0.0.0

TNS File: D:\Program Files\ORACLE_client_home\network\admin\tnsnames.ora
Aliases: kmpex, kmpex1, ORCL, power_new

NLS_LANG: SIMPLIFIED CHINESE_CHINA.ZHS16GBK

Thanks. Can you go to Help > Support Info for PL/SQL Developer as well?

PL/SQL Developer
Version 15.0.4.2064 (64 bit)
Style: Windows 11 Light
Windows 11 Build 22631
Physical memory : 14,539,512 kB (2,817,212 available)
Paging file : 27,122,424 kB (6,101,892 available)
Virtual memory : 137,438,953,344 kB (137,400,482,464 available)

Parameters
C:\Program Files\PLSQL Developer 15\plsqldev.exe

Preferences
Session mode: Multi
OCI Library: <none>
Use OCI7: False
Allow Multiple Connections: False

Preference Files
C:\Users\miaoc\AppData\Roaming\PLSQL Developer 15\Preferences\default\Default.ini
C:\Users\miaoc\AppData\Roaming\PLSQL Developer 15\Preferences\miaoc\default.ini

License File
C:\ProgramData\PLSQL Developer\aalf.dat

Debug file
C:\Users\miaoc\AppData\Roaming\PLSQL Developer 15\PlSqlDev.elf

Plug-Ins
*Active Query Builder (1.5.0) (C:\Program Files\PLSQL Developer 15\PlugIns\ActiveQueryBuilder.dll)
*PL/SQL Documentation (1.4.0) (C:\Program Files\PLSQL Developer 15\PlugIns\plsqldoc.dll)
(* is Active)

Aliases
kmpex
kmpex1
ORCL
power_new

Homes

DLLs
D:\Program Files\ORACLE_client_home\bin\oci.dll

TNS File
D:\Program Files\ORACLE_client_home\Network\Admin\tnsnames.ora

Using
Home: D:\Program Files\Oracle\instantclient_21_3
DLL: D:\Program Files\ORACLE_client_home\bin\oci.dll
OCI: version 12.1 (19.3.0.0.0)
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0

Character Sets
Character size: 4 byte(s)
CharSetID: 873
NCharSetID: 2000
Unicode Support: True
NLS_LANG: SIMPLIFIED CHINESE_CHINA.ZHS16GBK
NLS_NCHAR_CHARACTERSET: AL16UTF16
NLS_CHARACTERSET: AL32UTF8

Process
Working Set = 164,442,112
Memory = 42,329,432
GDI Objects = 728
User Objects = 1068
Handles = 1048

Monitor
PixelsPerInch = 96

Id = 0
PPI = 96
Primary = True
Handle = 65537
Left = 0
Top = 0
Width = 2560
Height = 1440

MainFormOnTaskbar = True

Thanks. One more question: can you go to Preferences > Oracle in Plyxon and let me know the "Character set" from this preference page?

A Chinese character occupies 3 bytes. When there are odd Chinese characters, there will be odd bytes. I doubt that there will be problems when there are odd bytes.

update to Plyxon Version 0.9.4.540

last char is unreadable。

select '啊啊啊' from dual
union all
select '啊啊' from dual
union all
select '啊' from dual;