Oracle IC4 Onsite Interview Experience and HR Ghosting

I had recently interviewed with Oracle for the position of IC4 at Oracle Health. -

Screening Round (30th Oct) 1. What is OOPs? 2. Why is string immutable? 3. Serialization / Transient 4. Synchroni

I had recently interviewed with Oracle for the position of IC4 at Oracle Health. -

Screening Round (30th Oct) 1. What is OOPs? 2. Why is string immutable? 3. Serialization / Transient 4. Synchronization 5. Linked List 6. Tree Map vs Hash Map 7. Reverse a string using recursion 8. LinkedList addNext and addLast 9. Binary Search logic 10. QuickSort logic 11. Challenges in day to day work. how I solved it? 12. Comparable vs Comparator -

Loop Interview 1 (10th Nov) - DSA Round 1. https://leetcode.com/problems/maximum-product-of-three-numbers/description/ 2. https://leetcode.com/problems/search-in-rotated-sorted-array/description Behavioral 1. One situation where you were asked to do an implementation which you know would cause issues in Production. How you handled it? 2. One project where you improved operational efficiency to a large extent. What was the impact? -

Loop Interview 2 (12th Nov) - HLD Round 1. Technologies being used. 2. Java Version being used. 3. Roles in my current company. 4. What technologies I have used in AWS. 5. What if juniors proposed a better solution than you? 6. Parking Lot - HLD !!! -

Loop Interview 3 (13th Nov) - Hiring Manager Round 1. Project Discussion + HLD 2. Behavioural Questions (Don't remember) -

Loop Interview 4 (13th Nov) - Bartender Round 1. Projects and Tech Stack on a high level. 2. Hospital Management HLD The interviews were average to good. I was little surprised when I got to do the HLD of a Parking Lot tbh. After the interviews, got ghosted by the HR. Didn't get any feedback.