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Toad 12.6 64-bit

Oracle 11.2.0.4 64-bit Production with the Partitioning option (shows when signing into SQLPlus)

From my support bundle:

Environment Variable (PATH) :
C:\app\oracle\product\11.2.0\client_1
C:\app\oracle\product\11.2.0\client_1
%PATH%
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem
C:\Windows\System32\WindowsPowerShell\v1.0
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem
C:\Windows\System32\WindowsPowerShell\v1.0\

Environment Variable (TNS_ADMIN) : C:\app\oracle\product\11.2.0\client_1\network\admin


ORACLE HOMES DATA


(Oracle Root)
= C:\app\oracle\product\11.2.0\client_1

Further up in the support bundle under Exceptions:

Cannot load OCI DLL: .\oci.dll

I did not have the 64-bit install of Oracle…it was 32-bit.