This did not work for me. I get an error as

DPI-1047: Cannot locate a 64-bit Oracle Client library: "/databricks/driver/oracle_ctl//lib/libclntsh.so: cannot open shared object file: No such file or directory".

When I tried to check for the directory using dbutils.f.ls("/databricks/driver/oracle_ctl") I am not able to find that directory. May be the init script is not copying the client as expected. So I also manually downloaded the Oracle client and mapped it to my cluster by creating a location as "/databricks/driver/oracle_ctl/", still no success.

Also I noticed that the error is pointing to a location "..../oracle_ctl//lib/libclntsh". When I inspected the downloaded client, I am not able to find any folder called /lib/libclntsh. May be its pointing to a wrong directory because of any recent changes?

Any helps is appreciated to connect to Oracle database in on premises system.