I've created a new branch on GitHub project to include Oracle tests...I'm not going to merge it to the main branch because Oracle docker image consumes a lot of memory and requires to modify the Docker Desktop configuration, but if anyone is interested on it here is the branch published:

https://github.com/intersystems-ib/workshop-py-performance/tree/oracle

Here is the comparative graph with Oracle included:

As you can see IRIS and Oracle are equivalents in terms of performance.