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Oracle Software Developer Interview Questions and Answers
46 Interview questions
Achieve O(1) insert and delete using a hash table and a doubly linked list for efficient data management.
Use a hash table to store key-value pairs for O(1) access.
Maintain a doubly linked list to keep track of the order of elements.
For insertion, add the new element to the head of the linked list and update the hash table.
For deletion, remove the element from the linked list and hash table simultaneously.
Example: ...
To solve the bug, I would first identify the root cause by analyzing the code, testing different scenarios, and debugging.
Review the code where the bug is occurring to understand the logic and flow
Use debugging tools to step through the code and track the variables
Test different scenarios to reproduce the bug and identify patterns
Check for any recent changes or updates that may have introduced the bug
Linux system calls are functions provided by the kernel for user-space programs to interact with the operating system.
System calls are used to request services from the kernel, such as creating processes, opening files, and networking.
Examples of system calls include open(), read(), write(), fork(), exec(), and socket().
System calls are invoked using a software interrupt or trap instruction, switching the CPU from...
Use 'mv' command in a bash script to rename files in Linux.
Use 'mv' command followed by the current file name and the new file name to rename files.
You can use wildcards like '*' to rename multiple files at once.
Make sure to test the script on a few files before running it on all files.
What people are saying about Oracle
Reversing a linked list involves changing the direction of the pointers between nodes.
Iterative approach: Use three pointers (prev, current, next) to reverse links.
Example: For list 1 -> 2 -> 3, after reversal it becomes 3 -> 2 -> 1.
Recursive approach: Reverse the rest of the list and adjust pointers.
Example: Base case is when the list is empty or has one node.
Trapping rain water problem involves calculating the amount of water that can be trapped between buildings given their heights.
Calculate the maximum height of buildings to the left and right of each building
Find the minimum of the two heights
Subtract the height of the current building to get the amount of water that can be trapped at that building
Oracle HR Interview Questions
Thread locks are created using synchronization mechanisms to prevent multiple threads from accessing shared resources simultaneously.
Use synchronized keyword in Java to create a synchronized block or method
Use locks from java.util.concurrent.locks package like ReentrantLock
Use synchronized collections like ConcurrentHashMap to handle thread safety
Implement thread-safe data structures like BlockingQueue for produce...
Design a parking lot system to manage parking spaces, vehicles, and payment processing.
Define core classes: ParkingLot, ParkingSpace, Vehicle, Ticket, and Payment.
ParkingLot manages multiple ParkingSpaces and keeps track of available spots.
ParkingSpace can be of different types: Compact, Regular, and Handicapped.
Vehicle class holds information like license plate, size, and type.
Ticket class generates a unique ID f...
I would use a relational database like MySQL for the Parking lot as it provides structured data storage and supports complex queries.
Relational databases like MySQL offer structured data storage for parking lot information
Supports complex queries for managing parking lot data efficiently
Ability to handle large amounts of data and transactions
Provides data integrity and security features
Can easily integrate with ot...
Testing is the process of evaluating a software application to identify defects or bugs.
Types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.
Unit testing involves testing individual components or modules of the software.
Integration testing checks if different modules work together correctly.
System testing evaluates the entire system's functionality.
...
Oracle Software Developer Interview Experiences
64 interviews found
Anonymous
I applied via Company Website and was interviewed in Oct 2024. There were 3 interview rounds.
It was a coding round interview along with interviewer via Virtual mode. I was given 2 coding questions on HackerRank for the interview:
1. one was an easy problem on counting minimum replacements.
2. "pat is an ordinary kid who works hard to be a great runner...." this was a challenging problem (which I managed to solve).
3. I was asked some basic Python questions, as the role was for a Python Developer.
(5 Questions)
- Q1. LLD for Parking Lot
- Ans.
Design a parking lot system to manage parking spaces, vehicles, and payment processing.
Define core classes: ParkingLot, ParkingSpace, Vehicle, Ticket, and Payment.
ParkingLot manages multiple ParkingSpaces and keeps track of available spots.
ParkingSpace can be of different types: Compact, Regular, and Handicapped.
Vehicle class holds information like license plate, size, and type.
Ticket class generates a unique ID for ea...
- Q2. Which database are you going to use for Parking lot and Why ?
- Ans.
I would use a relational database like MySQL for the Parking lot as it provides structured data storage and supports complex queries.
Relational databases like MySQL offer structured data storage for parking lot information
Supports complex queries for managing parking lot data efficiently
Ability to handle large amounts of data and transactions
Provides data integrity and security features
Can easily integrate with other s...
- Q3. Questions related to OOPs
- Q4. Questions related to Multi Threading
- Q5. Questions related to Projects
(2 Questions)
- Q1. I hate this since i was informed that this round was a technical.
- Q2. Usual Mangerial questions, Project Related, etc
Interview Preparation Tips
Swati Ambule
(4 Questions)
- Q1. What is java and explain oopes concept
- Ans.
Java is a popular programming language used for developing various applications. OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects.
Java is a class-based, object-oriented programming language.
OOPs concepts include encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation is the bundling of data and methods that operate on the data into a single unit.
Inheritance al...
- Q2. What is testing explain types
- Ans.
Testing is the process of evaluating a software application to identify defects or bugs.
Types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.
Unit testing involves testing individual components or modules of the software.
Integration testing checks if different modules work together correctly.
System testing evaluates the entire system's functionality.
Accep...
- Q3. What is exceptions handling
- Q4. Locators in automation selenium
- Ans.
Locators in automation selenium are used to identify web elements on a webpage for testing purposes.
Locators include ID, class name, name, tag name, link text, partial link text, and xpath.
ID is the most efficient locator as it is unique for each element.
Xpath is powerful but can be slow and brittle if not used correctly.
Using CSS selectors can also be a good alternative to xpath.
It is important to choose the right loc...
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Sep 2024. There were 4 interview rounds.
1 coding questions and OS, CN and DBMS mcqs
(2 Questions)
- Q1. Oops questions were asked and code on paper
- Q2. Project discussion and DSA questions
(2 Questions)
- Q1. Project discussion and DSA questions
- Q2. SQL and database questions
(2 Questions)
- Q1. Project discussion and DSA questions
- Q2. Puzzle and normal hr questions
I applied via Campus Placement
(1 Question)
- Q1. One coding question
(1 Question)
- Q1. Reverse linked list
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Coding Question based on favorite Data Structure
- Q2. Coding Question based on trees
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
Mcqs+ 1 coding test. Solved all
(2 Questions)
- Q1. Longest string with no repeating character
- Ans.
Find the longest string in an array with no repeating characters.
Iterate through each string in the array
Use a set to keep track of characters seen so far
Update the longest string found without repeating characters
- Q2. Generate paranthesis
- Ans.
Generate all valid combinations of parentheses for a given number n
Use backtracking to generate all possible combinations of opening and closing parentheses
Keep track of the number of opening and closing parentheses used
Add opening parentheses if there are remaining to be used, and add closing parentheses if it won't create an invalid combination
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
2 coding question and 30 mcqs of cs fundamental and aptitude
(2 Questions)
- Q1. Asked me to solve DSA question which is based on string problem name is count and say...
- Ans.
The 'Count and Say' problem generates a sequence of strings based on counting consecutive digits.
The sequence starts with '1'.
Each subsequent term is generated by describing the previous term.
For example, '1' becomes '11' (one 1), '11' becomes '21' (two 1s), and '21' becomes '1211' (one 2, then one 1).
The nth term can be generated iteratively or recursively.
- Q2. Given array contain duplicate elements need to remove duplicates and after deletion oreder of remaining element should remain same..
- Ans.
Remove duplicates from array of strings while maintaining original order.
Iterate through the array and use a Set to keep track of unique elements.
Add elements to a new array only if they are not already in the Set.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Jun 2024. There were 2 interview rounds.
1 dsa question and 35 mcq question related ti apis,aptitude,cs core concepts
(2 Questions)
- Q1. Pallindrome question from leetcode
- Q2. Graph question from leetcode
Interview Preparation Tips
Selected
I applied via Company Website and was interviewed in Jun 2024. There were 3 interview rounds.
Coding is nothing but ask about the software language like python, java, etc.,
(2 Questions)
- Q1. Tell about something
- Q2. How did you know the job
- Ans.
I found the job through a job search website and applied online.
I was actively looking for software developer positions on job search websites.
I came across the job posting for this position and it matched my skills and experience.
I submitted my application online through the company's website.
I received a call for an interview after my application was reviewed.
(2 Questions)
- Q1. Why we are hiring you
- Ans.
You are hiring me because of my strong technical skills, experience, and passion for software development.
Strong technical skills in programming languages such as Java, Python, and C++
Proven experience in developing and implementing software solutions
Passion for staying updated with the latest technologies and trends in the industry
- Q2. Tell about your strength
- Ans.
My strength lies in my problem-solving skills, attention to detail, and ability to work well in a team.
Strong problem-solving skills - I enjoy tackling complex issues and finding creative solutions.
Attention to detail - I am meticulous in my work, ensuring accuracy and quality.
Team player - I collaborate effectively with colleagues, contributing to a positive work environment.
Adaptability - I am able to quickly learn n...
Sumanth Shankar
I appeared for an interview in Feb 2025, where I was asked the following questions.
- Q1. Insert Delete in O(1)
- Ans.
Achieve O(1) insert and delete using a hash table and a doubly linked list for efficient data management.
Use a hash table to store key-value pairs for O(1) access.
Maintain a doubly linked list to keep track of the order of elements.
For insertion, add the new element to the head of the linked list and update the hash table.
For deletion, remove the element from the linked list and hash table simultaneously.
Example: Inser...
- Q2. Basic Calculator II
Oracle Interview FAQs
Some of the top questions asked at the Oracle Software Developer interview -
The duration of Oracle Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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