Oracle interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Oracle
2 rounds | 4 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 6 months
Topics: OOPS, Operating systems, DSA (easy+medium), DBMS, Networks
Tip 1 : Prepare your resume thoroughly
Tip 2 : Get in touch with seniors who have been placed in same company before giving the interview
Tip 3 : Practise standard DSA problems which come repeatedly in interviews
Application process
Where: Campus
Eligibility: NO criteria
Tip 1 : Know the projects inside out, practise the cross questions you might get from the interviewer.
Tip 2 : Try to have projects in diverse fields -ML and OOPS for ex.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration60 minutes
Interview date22 Oct 2021
Coding problem2
The first round was held at night from around 7:00 pm. Its duration was 1 hour. The environment was soothing and there was a webcam based monitoring system.
1. Operating System Question
Problems based on basic knowledge of operating systems such as the Process scheduling algorithms and semaphores. There were also numericals based on the finding the turn around time process. There were difference based problems as well. Disk scheduling algorithms were also stressed upon.
Problem approach
Tip 1 : Cover all the topics from online sources.
Tip 2 : Don't take only theoretical knowledge, practise problems as well
Tip 3 : Keep thorough knowledge of the topic, not only the superficial one.
2. Puzzle Question
There were a few problems based on mathematical puzzles like finding the next number, or which number in the sequence is incorrect. There were passage based puzzles as well where we are given a passage and then we are asked 4-5 problems on that passage.
Problem approach
Tip 1 : Practise giving aptitude tests in time based manner.
Tip 2 : Can checkout prepleaf for puzzle based questions
Tip 3 : Practise a lot of problems on a variety of topics
02
Round
Medium
Video Call
Duration45 minutes
Interview date1 Dec 2021
Coding problem2
It was scheduled in the afternoon from around 2:00 pm and went on for about 45 mins. The interviewers were very cordial and respectful. The environment was very soothing and there was very little pressure on candidates.
1. Reverse Linked List
Easy
15m average time
85% success
0/40
Asked in companies
You are given a Singly Linked List of integers. You need to reverse the Linked List by changing the links between nodes.
Note :
You do not need to print anything, just return the head of the reversed linked list.
Problem approach
The problem is relatively simple and can be solved by constructing a basic function to reverse the linkedlist in place.
Then we need to iterate the list and keep a counter that keeps track of the current position, if it is a multiple of 3 then we need to reverse this part of the list and keep moving forward.
By the time we reach the end of the list, the new list is constructed in the desired manner.
2. DBMS Question
Asked about the difference between relational and non relational database and when to prefer which.
Problem approach
Tip 1 : Try reading these topics from online sources if you are not from CSE.
Tip 2 : Be ready with theoretical problems on these topics.
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
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