Hi,
I'm new in Alteryx and looking for a way to do a hierarchical query for a huge amount of data. (PLM Database)
After tying various thing by using front-end technics (which are all slow), I tried with IN-DB Functions.
My current Process is as followed.

As you see I used two Database Tables and join them together, Afterword I would like to run an Apache Spark on top of the result which should do the hierarchical query. However I'm not able to get Apache Spark running.
The Database in Background is Oracle. My error message is always

My code is: 
Does anybody have experience with Apache Spark + Oracle and can share a running process or give me a hint why isn't working.
If you have an alternative approach to the hierarchical query problem, it is welcome too.
Thank you,
Tom