Oracle Senior Developer interview questions

I applied online and was contacted by a recruiter within a week. The first step was a 30-minute phone screen where I discussed my background and basic technical questions. After that, I was given a coding challenge on spark and leetcode medium difficulty problme. The problems focused on algorithms and data structures(graphs)

I gave online coding test & one technical interview. The interviewer was good and supportive. She asked me few basic questions on multithreading, written a basic code on how thread starts.