Instant Client Download Windows |best| - Oracle

If you see "is not a valid Win32 application," you are likely trying to run a 64-bit client with a 32-bit app.

echo %PATH%

Unlike standard Windows software, the Instant Client does not use an setup.exe installer. The installation is a manual extraction process. oracle instant client download windows

sqlplus /nolog

Always restart your IDE or Command Prompt after updating the PATH variable. If you see "is not a valid Win32