How to know installed Oracle Client is 32 bit or 64 bit?

Question

OS: Windows 2008 Server R2

Oracle Client: 11.2

Many Thanks

Answer 1

One thing that was super easy and worked well for me was doing a TNSPing from a cmd prompt:

TNS Ping Utility for 32-bit Windows: Version 11.2.0.3.0 - Production on 13-MAR-2015 16:35:32

Answer 2

None of the links above about lib and lib32 folder worked for me with Oracle Client 11.2.0 But I found this on the OTN community:

As far as inspecting a client install to try to tell if it's 32 bit or 64 bit, you can check the registry, a 32 bit home will be located in HKLM>Software>WOW6432Node>Oracle, whereas a 64 bit home will be in HKLM>Software>Oracle.

Answer 3

On 64-bit system:

32-bit Driver: C:\Windows\SysWOW64\odbcad32.exe

64-bit Driver: C:\Windows\System32\odbcad32.exe

Go to Drivers Tab
Version is shown there as well.