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Oracle Senior Engineer Interview Questions and Answers

Updated 28 Jun 2021

Oracle Senior Engineer Interview Experiences

2 interviews found

I applied via Naukri.com and was interviewed in May 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Programming

Interview Preparation Tips

Interview preparation tips for other job seekers - Interviewer had less knowledge on the current technologies and was more stereo type.

I applied via Company Website and was interviewed in Nov 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. Linked list, data structure
  • Q2. Map,

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn data structure and analysis

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I applied via Referral and was interviewed in Feb 2021. There was 1 interview round.

Interview Questionnaire 

3 Questions

  • Q1. Why can’t a columns with unique with a not null constraint be used as a primary key?
  • Ans. 

    A unique not null column can be used as a primary key, but not vice versa.

    • Primary key must be unique and not null, but not all unique not null columns need to be primary keys.

    • Primary key is used to identify each row uniquely, while unique not null column is used to ensure data integrity.

    • A table can have multiple unique not null columns, but only one primary key.

  • Answered by AI
  • Q2. Because null can’t be equated
  • Ans. 

    Null cannot be equated as it represents absence of a value.

    • Null is not equal to any value, including itself.

    • Attempting to equate null can result in unexpected behavior.

    • Null is often used to represent the absence of a value or unknown value.

  • Answered by AI
  • Q3. We have 2 procedures with the same names. One with 2 parameters.. second one with 3 parameters. The procedure with 3 parameters has a null also. What will be invoked when we call the procedure

I applied via Naukri.com and was interviewed in Jul 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Java core microservices

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview was very good
Interviewer was knowledgeable
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-

I applied via Approached by Company

Round 1 - Coding Test 

Sort the arr, fetch element from array

Round 2 - Technical 

(2 Questions)

  • Q1. Linklist search
  • Q2. Sort in link List
  • Ans. 

    Sorting in a linked list involves rearranging the elements in ascending or descending order based on a certain criteria.

    • Use a sorting algorithm like bubble sort, selection sort, or merge sort to rearrange the elements in the linked list.

    • Traverse the linked list and compare each element with the next one to determine the order in which they should be sorted.

    • Update the pointers of the nodes in the linked list to reflect ...

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
-

I appeared for an interview in Sep 2024.

Round 1 - Coding Test 

C programming and java

Round 2 - Coding Test 

Advanced coding on c

Round 3 - Technical 

(2 Questions)

  • Q1. Why did you choose this company
  • Ans. 

    I chose this company because of its innovative projects, strong company culture, and opportunities for growth.

    • Innovative projects that challenge me and allow me to learn new skills

    • Strong company culture that values teamwork and collaboration

    • Opportunities for growth and advancement within the company

  • Answered by AI
  • Q2. What is your aim
  • Ans. 

    My aim is to continuously improve my technical skills, contribute to innovative projects, and eventually become a technical leader in the field.

    • Continuous learning and skill development

    • Contribution to innovative projects

    • Becoming a technical leader in the field

  • Answered by AI
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Question on trie
  • Q2. Question on intervals
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
Not Selected

I applied via Approached by Company and was interviewed in Sep 2023. There were 2 interview rounds.

Round 1 - Coding Test 

Traverse through a matrix of uppercase english alphabets to find a given word. you are allowed to make up to k jumps, and same position can be repeated too.

Round 2 - Technical 

(1 Question)

  • Q1. Compression of 0-1 matrix of particular size.
  • Ans. 

    Compression of 0-1 matrix involves reducing the size of the matrix by storing only the necessary information.

    • Use run-length encoding to compress the matrix by storing consecutive repeated values as a single value and count.

    • Identify patterns in the matrix that can be represented more efficiently.

    • Consider using sparse matrix representation if the matrix has a lot of zeros.

    • Implement efficient algorithms to compress and de...

  • Answered by AI

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Oops programming,SQL server Database

Interview Questionnaire 

16 Questions

  • Q1. Simple linked list questions-find middle element,given a pointer to second last element delete it
  • Q2. Explain insertion sort,quicksort
  • Ans. 

    Insertion sort and quicksort are sorting algorithms used to sort arrays of data.

    • Insertion sort: iterates through the array and inserts each element into its proper position.

    • Quicksort: selects a pivot element and partitions the array into two sub-arrays, one with elements less than the pivot and one with elements greater than the pivot.

    • Insertion sort is best for small arrays, while quicksort is best for large arrays.

    • Bot...

  • Answered by AI
  • Q3. Concept of virtual destructors,runtime polymorphism
  • Q4. Test cases for an installation software like check if sufficient memory available,check for a previous version,check to undo all the changes made to the system while quitting the installation. 5.2 puzzles
  • Q5. Merge two sorted linked lists using recursion
  • Ans. 

    Merge two sorted linked lists using recursion

    • Create a recursive function that compares the first nodes of both lists

    • Set the smaller node as the head of the merged list and call the function again with the next node of the smaller list

    • Base case: if one list is empty, return the other list

    • Return the merged list

  • Answered by AI
  • Q6. Given an integer(consider 4 bytes) find which byte is zero
  • Ans. 

    Given an integer, determine which byte is zero.

    • Convert the integer to a byte array using bitwise operations.

    • Iterate through the byte array and check for a zero value.

    • Return the index of the zero byte.

    • Consider endianness when converting to byte array.

  • Answered by AI
  • Q7. Program to check whether your machine is little endian or big endian
  • Ans. 

    To check endianness, create a 4-byte integer with a known value and check the byte order.

    • Create a 4-byte integer with a known value

    • Check the value of the first byte to determine endianness

    • If the first byte is the least significant, the machine is little endian

    • If the first byte is the most significant, the machine is big endian

  • Answered by AI
  • Q8. Print something before execution of main()(use static objects)
  • Ans. 

    Static objects can be used to print something before main() execution.

    • Static objects are initialized before main() execution

    • They can be used to print something before main()

    • Example: static int x = printf("Hello World!");

    • Output: Hello World! will be printed before main() execution

  • Answered by AI
  • Q9. Memory allocation for static varibles(when,which segment etc)
  • Ans. 

    Static variables are allocated memory in the data segment of the program's memory space.

    • Static variables have a fixed memory location throughout the program's execution.

    • They are initialized to zero by default.

    • If initialized explicitly, they are stored in the data segment.

    • Static variables can be accessed by any function in the program.

  • Answered by AI
  • Q10. Find space and time complexity for a recursive function(he wrote it)
  • Ans. 

    Finding space and time complexity of a recursive function.

    • Space complexity is the amount of memory used by the function.

    • Time complexity is the amount of time taken by the function to execute.

    • Recursive functions have higher space complexity due to the call stack.

    • Time complexity can be calculated using Big O notation.

    • Examples of recursive functions include factorial and Fibonacci sequence.

  • Answered by AI
  • Q11. Some questions on major project
  • Q12. Preprocessor directives,volatile keyword
  • Q13. Virtual pointer table,operator overloading,friend functions,semaphores
  • Q14. Diamond heirarchy problem
  • Ans. 

    Diamond hierarchy problem is a problem in object-oriented programming where a class inherits from multiple classes in a diamond-shaped hierarchy.

    • Occurs when a class inherits from two classes that share a common base class

    • Can lead to ambiguity in method calls and data members

    • Solved using virtual inheritance or by using interfaces

  • Answered by AI
  • Q15. Fibonacci series.(:P)
  • Q16. Puzzle

Interview Preparation Tips

Round: Test
Experience: 1. Aptitude-Mostly caselets on ordering and some easy quant questions.
2. c/c++-No objective questions.Mostly on basics(function pointers,give output of string based codes).Some simple progams(Find smallest of three numbers using conditional operators.gcd using recursion)
3.Data Structures-LCA for BST,2's compliment,reverse a doubly linked list.

College Name: NA

Skills evaluated in this interview

Oracle Interview FAQs

How to prepare for Oracle Senior Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Oracle. The most common topics and skills that interviewers at Oracle expect are Oracle, Analytical Skills, Customer Service, Diagnostics and Supervision.
What are the top questions asked in Oracle Senior Engineer interview?

Some of the top questions asked at the Oracle Senior Engineer interview -

  1. Linked list, data struct...read more
  2. Programm...read more

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Oracle Senior Engineer Salary
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Oracle Senior Engineer Reviews and Ratings

based on 13 reviews

3.8/5

Rating in categories

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3.1

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Senior Engineer High-Performance Computing

Bangalore / Bengaluru

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₹ 12-40 LPA

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Bangalore / Bengaluru

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