Oracle Placement Papers 2026, Questions, Answers & Complete Interview Guide

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About Oracle Corporation

Oracle Corporation is one of the world's largest enterprise software and cloud infrastructure companies, founded in 1977 by Larry Ellison, Bob Miner, and Ed Oates in Santa Clara, California. Originally built on the revolutionary concept of a commercially viable relational database management system (RDBMS), Oracle has grown into a $140+ billion company spanning database software, enterprise applications (ERP, HCM, CX), cloud infrastructure (OCI, Oracle Cloud Infrastructure), and hardware (following the Sun Microsystems acquisition in 2010). Oracle's database products remain the de facto standard for mission-critical enterprise data management across banking, telecom, healthcare, and government sectors globally.

Oracle's product portfolio today includes Oracle Database (19c, 21c), Oracle Autonomous Database, Oracle Fusion Cloud Applications (ERP, HCM, SCM), Oracle NetSuite (cloud ERP for SMBs), Oracle APEX (low-code development platform), MySQL (the world's most popular open-source database), and Java (acquired via Sun Microsystems). The company's cloud infrastructure, OCI, is one of the fastest-growing hyperscaler platforms and directly competes with AWS, Azure, and Google Cloud, offering differentiated pricing and bare-metal performance for enterprise workloads.

Oracle India's development centers, primarily in Bengaluru, Hyderabad, and Pune, are among the company's largest globally and contribute significantly to core product engineering across database, cloud, and applications. For freshers, Oracle is one of the most accessible top-tier tech employers, offering transparent hiring processes, strong mentorship, and structured career growth. The freshers CTC of ₹8–18 LPA is lower than pure-play product companies but comes with deep technical mentorship, exposure to enterprise-scale problems, and strong alumni networks. Oracle is an excellent career launchpad.

For a related deep-dive, see Oracle Fresher Hiring Pattern 2026: DSA Rounds, Cut-offs & Prep.

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Eligibility Criteria

Criterion	Requirement
Degree	B.E. / B.Tech / M.Tech / MCA / M.Sc (CS/IT)
Eligible Branches	CSE, IT, ECE, EEE, Mathematics & Computing, Information Science
Minimum CGPA	6.5 / 10 (more accessible than pure-product companies)
Active Backlogs	None at time of application
Historical Backlogs	Maximum 2, all cleared
Graduation Year	2025 or 2026 batch
Work Experience	Freshers; internship experience is a plus
Languages Known	Java, C/C++, Python, SQL (Java is strongly preferred)

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Oracle Selection Process 2026

1. Online Application / Campus Registration, Apply via Oracle careers portal or through campus placement cell. Shortlisting is based on CGPA and branch.
2. Online Aptitude Test, 90-minute test covering quantitative aptitude, logical reasoning, verbal ability, and Java/SQL MCQs. Conducted on AMCAT or Oracle's proprietary platform.
3. Technical Interview Round 1 (Coding + CS Fundamentals), 45–60 minutes. Live coding in Java (strongly preferred) or C++. Tests on DSA, OOPS concepts, and basic SQL queries.
4. Technical Interview Round 2 (Advanced Technical), Deeper DSA, operating system concepts, database design, and Java internals. Oracle heavily tests OOPS, design patterns, and multithreading.
5. Managerial Round, Project discussion, situational questions, career motivations. Tests communication skills and problem-solving approach.
6. HR Interview, Standard behavioral questions, salary expectations, relocation willingness, and company values discussion.
7. Offer & Verification, Offer letter in 2–4 weeks. Medical fitness certificate and document verification required before joining.

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Exam Pattern

Section	Topics Covered	No. of Questions	Time Allotted
Quantitative Aptitude	Number System, Percentage, Time & Work, Probability, Geometry	20	25 minutes
Logical Reasoning	Syllogisms, Seating Arrangements, Blood Relations, Data Sufficiency	15	20 minutes
Verbal Ability	Reading Comprehension, Para-jumbles, Error Correction, Synonyms/Antonyms	15	20 minutes
Java / Technical MCQ	OOP, Collections, Exception Handling, SQL, OS concepts	15	20 minutes
Coding Section	Java/C++ problem (Easy–Medium difficulty)	1–2	25 minutes
Total		66–68	~110 minutes

Note: Oracle's aptitude section is one of the most detailed in the industry. Strong math fundamentals are essential. The Java MCQ section is unique to Oracle among major tech employers.

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Practice Questions with Detailed Solutions

Quantitative Aptitude

Q1. The population of a city increases by 10% annually. If the current population is 5 lakhs, what will be the population after 2 years?

Solution:

• Population after n years = P × (1 + r/100)ⁿ
• After 2 years = 5,00,000 × (1.10)² = 5,00,000 × 1.21 = 6,05,000 ✅

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Q2. A number when divided by 5 gives a remainder of 3, and when divided by 7 gives a remainder of 4. What is the smallest such number?

Solution:

• Numbers giving remainder 3 when ÷5: 3, 8, 13, 18, 23, 28, 33, 38...
• Check which give remainder 4 when ÷7: 3÷7=R3, 8÷7=R1, 13÷7=R6, 18÷7=R4 ✓
• Smallest such number = 18 ✅

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Q3. A circle's radius is increased by 20%. By what percentage does the area increase?

Solution:

• New radius = 1.2r; New area = π(1.2r)² = 1.44πr²
• Increase in area = 1.44πr² − πr² = 0.44πr²
• Percentage increase = (0.44 / 1) × 100 = 44% ✅

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Q4. Find the compound interest on ₹10,000 at 8% per annum for 2 years, compounded annually.

Solution:

• Amount = P × (1 + r/100)ⁿ = 10000 × (1.08)² = 10000 × 1.1664 = ₹11,664
• CI = 11,664 − 10,000 = ₹1,664 ✅

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Q5. In a box, there are 5 red, 4 blue, and 3 green balls. Two balls are drawn at random. Find the probability that both are red.

Solution:

• Total balls = 12; Choosing 2 = C(12,2) = 66
• Both red = C(5,2) = 10
• Probability = 10/66 = 5/33 ≈ 0.152 ✅

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Q6. What is the smallest 4-digit number divisible by 18, 24, and 36?

Solution:

• LCM(18, 24, 36): 18=2×3², 24=2³×3, 36=2²×3²; LCM = 2³×3² = 72
• Smallest 4-digit number ÷ 72: 1000/72 = 13.88 → 14 × 72 = 1008 ✅

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Q7. If 40% of a number is 120, find 75% of that number.

Solution:

• 40% of N = 120 → N = 120/0.40 = 300
• 75% of 300 = 0.75 × 300 = 225 ✅

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Q8. A and B invest ₹3,000 and ₹5,000 in a business. At year-end, profit is ₹4,800. What is A's share?

Solution:

• Ratio = 3000:5000 = 3:5; Total parts = 8
• A's share = (3/8) × 4800 = ₹1,800 ✅

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Java / Technical MCQs

Q9. What is the output of the following Java code?

public class Test {
    public static void main(String[] args) {
        String s1 = "Oracle";
        String s2 = "Oracle";
        String s3 = new String("Oracle");
        System.out.println(s1 == s2);
        System.out.println(s1 == s3);
        System.out.println(s1.equals(s3));
    }
}

Solution:

• s1 == s2: Both reference the same string literal in the String Pool → true
• s1 == s3: new String() creates a new object on heap → false
• s1.equals(s3): Compares content → true
• Output:

true
false
true

Key concept: == compares references; .equals() compares content. Critical Oracle Java interview topic. ✅

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Q10. Explain the difference between ArrayList and LinkedList in Java. When would you use each?

Solution:

Feature	ArrayList	LinkedList
Backing structure	Dynamic array	Doubly linked list
Get(index)	O(1)	O(n)
Insert/Delete (middle)	O(n), shifts elements	O(1), just pointer change
Memory overhead	Low	High (stores prev/next pointers)
Best use case	Read-heavy, index-based access	Write-heavy, frequent insertions/deletions

Use ArrayList for most cases (better cache locality, O(1) random access). Use LinkedList when you frequently insert/delete at the beginning/middle. ✅

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Coding Questions

Q11. Write a Java program to check if a number is prime.

Solution (Java):

public class PrimeCheck {
    public static boolean isPrime(int n) {
        if (n <= 1) return false;
        if (n <= 3) return true;
        if (n % 2 == 0 || n % 3 == 0) return false;
        for (int i = 5; i * i <= n; i += 6) {
            if (n % i == 0 || n % (i + 2) == 0)
                return false;
        }
        return true;
    }

    public static void main(String[] args) {
        System.out.println(isPrime(17));  // true
        System.out.println(isPrime(18));  // false
        System.out.println(isPrime(97));  // true
    }
}

Time: O(√n), Space: O(1). The 6k±1 optimization skips even numbers and multiples of 3. ✅

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Q12. Write a SQL query to find the second highest salary from an Employee table.

Solution (SQL):

-- Method 1: Using subquery
SELECT MAX(salary) AS SecondHighestSalary
FROM employees
WHERE salary < (SELECT MAX(salary) FROM employees);

-- Method 2: Using LIMIT/OFFSET (MySQL)
SELECT DISTINCT salary
FROM employees
ORDER BY salary DESC
LIMIT 1 OFFSET 1;

-- Method 3: Using DENSE_RANK() (modern, handles ties correctly)
SELECT salary AS SecondHighestSalary
FROM (
    SELECT salary, DENSE_RANK() OVER (ORDER BY salary DESC) AS rank
    FROM employees
) ranked
WHERE rank = 2
LIMIT 1;

Best approach: Method 3 using window functions handles duplicate salaries correctly. Oracle interviewers love window function knowledge. ✅

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Q13. Implement a stack using two queues.

Solution (Java):

import java.util.LinkedList;
import java.util.Queue;

class StackUsingQueues {
    Queue<Integer> q1 = new LinkedList<>();
    Queue<Integer> q2 = new LinkedList<>();

    void push(int x) {
        q2.add(x);
        while (!q1.isEmpty()) q2.add(q1.poll());
        Queue<Integer> temp = q1; q1 = q2; q2 = temp;
    }

    int pop() {
        if (q1.isEmpty()) throw new RuntimeException("Stack is empty");
        return q1.poll();
    }

    int top() {
        if (q1.isEmpty()) throw new RuntimeException("Stack is empty");
        return q1.peek();
    }
}

Explanation: Each push moves all existing elements to q2, adds new element to q2 first, then swaps queues. This ensures LIFO order. Push: O(n), Pop/Top: O(1). ✅

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Q14. Write a program to find all pairs in an array that sum to zero.

Solution (Java):

import java.util.*;

public class ZeroSumPairs {
    public static List<int[]> findZeroSumPairs(int[] arr) {
        Set<Integer> seen = new HashSet<>();
        Set<String> pairsFound = new HashSet<>();
        List<int[]> result = new ArrayList<>();
        
        for (int num : arr) {
            if (seen.contains(-num)) {
                int a = Math.min(num, -num);
                int b = Math.max(num, -num);
                String key = a + "," + b;
                if (pairsFound.add(key)) {
                    result.add(new int[]{a, b});
                }
            }
            seen.add(num);
        }
        return result;
    }

    public static void main(String[] args) {
        int[] arr = {-3, 1, 2, -1, -2, 3, 4, -4};
        List<int[]> pairs = findZeroSumPairs(arr);
        for (int[] pair : pairs)
            System.out.println(pair[0] + ", " + pair[1]);
        // Output: -3, 3 | -1, 1 | -2, 2 | -4, 4
    }
}

Time: O(n), Space: O(n) ✅

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Q15. Write a recursive function to calculate the power of a number (x^n) efficiently.

Solution (Java, Fast Exponentiation):

public class FastPower {
    public static double myPow(double x, int n) {
        if (n == 0) return 1;
        if (n < 0) {
            x = 1 / x;
            n = -n;
        }
        if (n % 2 == 0)
            return myPow(x * x, n / 2);
        else
            return x * myPow(x * x, n / 2);
    }

    public static void main(String[] args) {
        System.out.println(myPow(2, 10));   // 1024.0
        System.out.println(myPow(2.0, -2)); // 0.25
    }
}

Explanation: Binary exponentiation, instead of multiplying n times (O(n)), we halve the problem each time: O(log n). Classic Oracle technical interview question. ✅

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HR Interview Questions & Sample Answers

Q1. Why do you want to join Oracle?

Sample Answer: "Oracle's foundation is something I genuinely admire, the company didn't just create a product, it invented an entire industry. The Oracle Database has been the backbone of banking, healthcare, and government systems globally for 40 years. I want to be part of the team evolving that legacy into Oracle Cloud's future, especially OCI's growing competition with AWS and Azure. Also, Oracle's Java stewardship is deeply personal, Java was the first language I learned seriously, and working on its evolution would be a dream."

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Q2. What is your understanding of object-oriented programming? Give a real-world example.

Sample Answer: "OOP organizes software around objects that encapsulate state and behavior. The four pillars are: Encapsulation (hiding internal details, like a car's engine behind a 'start()' method), Abstraction (showing only what's necessary, a driver uses a steering wheel without knowing the steering mechanics), Inheritance (code reuse, a 'SavingsAccount' class extending a base 'BankAccount'), and Polymorphism (one interface, many behaviors, a 'Shape' interface where 'Circle.area()' and 'Rectangle.area()' compute differently). Real-world: an Oracle ERP system uses OOP to model Business Units, Employees, and Transactions as objects with defined behaviors."

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Q3. Describe a time you debugged a difficult problem.

Sample Answer: "During my internship, a data pipeline was occasionally producing duplicate records, but only on weekdays and at high traffic volumes. Random failures are the hardest to debug. I added structured logging at every pipeline stage and ran statistical analysis on failure timestamps. I discovered it was a race condition in a batch processor, two threads would simultaneously read the 'last processed ID' before either updated it, causing both to process the same records. I fixed it with a database-level lock using a SELECT FOR UPDATE query. That experience taught me both concurrency fundamentals and the value of systematic debugging over intuition."

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Q4. Are you comfortable relocating to Bengaluru/Hyderabad/Pune?

Sample Answer: "Absolutely. I see relocating as part of professional growth, being in an engineering hub means access to meetups, tech communities, and colleagues who sharpen you daily. I've already researched housing options near Oracle's [city] campus and I'm prepared for the transition. My family is supportive of this career step."

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Q5. How do you handle tight deadlines?

Sample Answer: "I decompose the work immediately. First, I identify the minimum viable output, what must be done vs what's nice to have. Then I estimate time for each component honestly, flag any blockers early, and communicate progress proactively to the team. During a college hackathon with a 24-hour deadline, my team had to build a full-stack app. I assigned backend/frontend tracks in parallel, defined API contracts first so both sides could work independently, and we shipped a working product with 2 hours to spare. Structure and early communication are the antidote to deadline panic."

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Preparation Tips

• Master Java deeply: Oracle's tech stack is Java-heavy. Study Java Collections (ArrayList, HashMap, TreeMap, LinkedHashMap), Java 8+ features (streams, lambdas, Optional), exception handling, multithreading, and garbage collection basics.
• SQL is non-negotiable at Oracle: Practice complex SQL queries, JOINs (INNER, LEFT, RIGHT, FULL OUTER), subqueries, window functions (ROW_NUMBER, RANK, DENSE_RANK, LAG/LEAD), GROUP BY/HAVING, and query optimization. This is Oracle's home turf.
• Review OOPS design patterns: Study Singleton, Factory, Observer, and Strategy patterns. Oracle interviewers frequently test design pattern application in coding interviews.
• Practice on HackerRank and AMCAT: Oracle's online tests are most similar to AMCAT-style aptitude sections. Use AMCAT practice tests for familiarity.
• Know Oracle products: Study OCI basics (compute, storage, networking), Oracle Database architecture (tablespaces, schemas, indexes), and have opinions about Oracle vs. competitor databases.
• Prepare for managerial round: Oracle's managerial round is more conversational than technical. Focus on articulating your problem-solving process, showing leadership potential, and demonstrating customer/stakeholder empathy.
• Review OS and DBMS fundamentals: Oracle interviews are famous for CS fundamentals. Revise process scheduling, deadlocks, virtual memory, ACID properties, normalization (1NF–3NF), and indexing strategies.

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Frequently Asked Questions (FAQ)

Q1: Does Oracle accept non-CS branches for software engineering roles? Yes. Oracle accepts ECE, EEE, and Mathematics & Computing branches alongside CSE/IT for software engineering positions, provided candidates meet the CGPA threshold and demonstrate strong programming skills.

Q2: Which programming language should I use in Oracle's coding interviews? Java is strongly preferred and expected for most Oracle SWE roles. C++ is accepted but may signal misalignment with their Java-heavy ecosystem. Python is generally not used in Oracle's technical rounds.

Q3: Is Oracle's on-campus process different from off-campus? On-campus: Tests are conducted in one day (aptitude + interviews). Off-campus: More distributed, typically takes 2–3 weeks with separate scheduling for each round.

Q4: What are Oracle's work-from-home policies for freshers? Oracle follows a hybrid model (3 days in office, 2 days remote) for most India locations as of 2026. Freshers are generally expected to be in-office more frequently during onboarding.

Q5: Are there growth opportunities within Oracle after joining as a fresher? Yes. Oracle has structured career ladders (IC3 to IC8+ for individual contributors) with annual review cycles, internal transfer options across products, and access to Oracle University certifications. Many Oracle India engineers have grown into principal engineers and architects within 5–7 years.

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Last updated: March 2026 | Source: Oracle Careers, AMCAT question archives, Glassdoor India, student interview experiences on PrepInsta and GeeksForGeeks