As far as I checked, there is no working library for Oracle.
rustoci is under development and has not been updated two years.
edited: I restarted rust-oracle in the next paragraph at the beginning of Oct. 2017.
I pushed rust-oracle repository three days ago. But, sorry, I have no will to
develop it further. It can select basic SQL data types: char, nchar, varchar2, nvarchar2, number,
date, timestamp, timestamp with time zone, timestamp with local time zone, interval day to second and
interval year to month.
It doesn’t support LOB, Object types, bind parameters, etc. No tests are implemented.
I started to learn Rust just a month ago. It may be non-Rusty code.