Total 3 rounds of interview Round 1 Data structures, Posed a question on total implementations of B+ tree and code on a piece of paper provided. It's more like an interaction of problems on each approach. Round 2 Almost everything on Computer science from BIOS to network status. Pretty much strong interview. Operating System Computer Networking Coding using geeksforgeeks Round 3 Why Oracle and all. Just going through their website will help u.

Initial recruiter call is about 30 minutes and walks you through the entire interview process. Received the link to schedule the next round interview after one week. Technical interview wasn't difficult, pretty standard coding challenge. Got ghosted after interview.