I can not get ROracle to install on Windows 10 on either 64- or 32-bit versions (I use 64-bit, but after failure with that I tried to at least get 32-bit working and also failed). This current failure occurs with R 3.6.1 and both ROracle 1.3-1 and 1.3-2; I'm up to R 3.6.1 because it also failed on 3.5.x and 3.6.0.
I've set everything up as instructed on http://cran.cnr.berkeley.edu/web/packages/ROracle/INSTALL for a Windows installation. I have Instant Client Basic and SDK extracted to C:\oreclient\instantclient_18_5. I have that path in both the OCI_LIB64 and PATH environment variables. I've exhausted all possible troubleshooting solutions I can find from searching online, and I'm stuck. How do I get ROracle installed and working correctly? Reverting to previous versions of R is not a viable solution.