Installing cx_Oracle on 64 bit windows

Question

I need to install cx_oracle on a Windows 7x64, Oracle 10g (32 bit).

What should be the version of

• Oracle Instant Client (i installed x64 bit)
• cx_Oracle binary (i installed x64 bit)
• Python 2.7.13 (i installed x64 bit)

There are version incompatibility issues which were expected. I am confused which version should i follow. Should i install 32 bit version of all the above three ?

Error

cx_Oracle - DLL load failed: %1 is not a valid Win32 application

I have followed all the steps. Installed Oracle client first, set path and ORACLE_HOME to the C:\\oracle\\instant_client_10_2 and then installed cx_Oracle. What is the most painless way to successfully install it?

Answer 1

This issue possible solutions widely described on another SO topic .

But analyzing your message, I can suggest you to add your instant client folder (like ...\\instantclient_12_1) to your PATH environment variable.

And if won't work, move this path at your first place in PATH's paths to test if smth overlap that.