Here is the output from the Support Info:
PL/SQL Developer
Version 16.0.0.2142 (64 bit)
01.154271 - 35 user license
Support Contract: 12/1/2025
Style: Sky
Windows 10 Build 19045
en-US(1033)/English (United States)
Physical memory : 16,139,648 kB (7,328,996 available)
Paging file : 19,154,304 kB (6,474,744 available)
Virtual memory : 137,438,953,344 kB (137,434,150,816 available)
Parameters
C:\Program Files\PLSQL Developer 16\plsqldev.exe
Preferences
Session mode: Multi
OCI Library:
Use OCI7: False
Allow Multiple Connections: True
Preference Files
C:\Users\Farrp\AppData\Roaming\PLSQL Developer 16\Preferences\default\Default.ini
C:\Users\Farrp\AppData\Roaming\PLSQL Developer 16\Preferences\farrp\default.ini
License File
C:\ProgramData\PLSQL Developer\aalf.dat
Debug file
C:\Users\Farrp\AppData\Roaming\PLSQL Developer 16\plsqldev.log
Plug-Ins
*Active Query Builder (1.5.1) (C:\Program Files\PLSQL Developer 16\PlugIns\ActiveQueryBuilder.dll)
*PL/SQL Documentation (1.4.1) (C:\Program Files\PLSQL Developer 16\PlugIns\plsqldoc.dll)
(* is Active)
Enabled AI Systems
Aliases
Homes
OracleHome1 (C:\Oracle\Middleware\Oracle_Home)
OraClient21Home1 (C:\ORA21C_64\product\21.0.0\client_1)
DLLs
C:\ORA21C_64\product\21.0.0\client_1\bin\oci.dll
TNS File
C:\Oracle\product\12.1.0\client_1\network\admin\tnsnames.ora
Using
Home: OraDB21Home1
DLL: C:\ORA21C_64\product\21.0.0\client_1\bin\oci.dll
OCI: version 12.1 (21.3.0.0.0)
Process
Working Set = 178,712,576
Memory = 31,940,248
GDI Objects = 587
User Objects = 321
Handles = 533
Monitors
PixelsPerInch = 96
Id = 0
PPI = 96
Primary = False
Handle = 131073
Left = -1920
Top = 0
Width = 1920
Height = 1080
Id = 1
PPI = 96
Primary = True
Handle = 65751
Left = 0
Top = 0
Width = 1920
Height = 1080
MainFormOnTaskbar = True