Oracle Senior Software Engineer interview questions

Interview was pretty good. Initially coding interview and then 4 rounds of back to back interviews on a super day. 2 coding rounds with medium and hard leetcode questions, one behavioral and a system design. I felt system design round was a bit difficult. Interviewer asked many in-depth questions

It have three rounds of interview .all three were technical. No hr interview happened for me.First interview was covering java and spring concept.second interview covered data structures and bit of system design and the third interview again data structures programing and some java concepts