I’m having this issue installing the Oracle instant client on my MacBook Air M1:
DPI-1047 cannot locate 64-bit oracle client library dlopen(libclntsh.dlyb)
Someone already did it before?
You can download the "Basic Package" zip for version 19.8.0.0.0: https://www.oracle.com/database/technologies/instant-client/macos-intel-x86-downloads.html
Once you have downloaded, unzip the files and move them to /usr/local/lib folder. This should solve your issue.
You may run into a security issue opening the files, in that case you will need to open them individually on the finder in order to manually allow mac to trust them.