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Oracle Placement Papers 2024

Overview

This page collects Oracle placement papers from 2024 with previous-year questions, solutions, and the 2024 exam pattern. It is useful when you want real drive history: what the OA looked like, which question types repeated, and how solutions were approached. Work through the papers below to build speed and accuracy, then compare against newer 2025 material so your prep matches both established Oracle patterns and the latest shifts.

Download 2024 Placement Papers

Oracle 2024 paper 1

Complete Oracle placement paper with coding questions and solutions

Oracle 2024 paper 2

Additional 2024 Oracle paper with detailed solutions

Oracle 2024 paper 3

Another 2024 Oracle paper with comprehensive solutions

Oracle exam pattern 2024

Section Questions Time Difficulty Focus Areas
Coding/Programming 2-3 60-90 min Medium-Hard DSA, algorithms, problem-solving
Technical MCQs 15-20 30-40 min Medium CS fundamentals, OOP, DBMS
Aptitude 10-15 20-30 min Easy-Medium Quantitative, logical reasoning

Total: 30-50 questions, 90-120 minutes

Key Changes in 2024:

  • Updated question patterns
  • Increased focus on practical skills
  • New evaluation criteria

Oracle Placement Papers 2024 - actual questions & solutions

This section contains practice questions styled on Oracle placement papers 2024 (previous-year pattern), with worked solutions. Use them as timed sectional drills - from student reports drives vary by college and role, so treat this as a high-signal practice bank, not an official paper dump.

Question 1: longest common prefix

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Problem Statement: Find the longest common prefix string amongst an array of strings.

Example:

Input: ["flower","flow","flight"]
Output: "fl"

Solution (Java):

public String longestCommonPrefix(String[] strs) {
    if (strs.length == 0) return "";
    String pref = strs[0];
    for (int i = 1; i < strs.length; i++) {
        while (!strs[i].startsWith(pref)) {
            pref = pref.substring(0, pref.length() - 1);
            if (pref.isEmpty()) return "";
        }
    }
    return pref;
}

Time Complexity: O(S)
Space Complexity: O(1)

Question 2: check palindrome

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Problem Statement: Return true if the string reads the same forward and backward (ignore case).

Example:

Input: "Level"
Output: true

Solution (Java):

public boolean isPalindrome(String s) {
    s = s.toLowerCase();
    int i = 0, j = s.length() - 1;
    while (i < j) {
        if (s.charAt(i++) != s.charAt(j--)) return false;
    }
    return true;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 3: climbing stairs

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Problem Statement: You can climb 1 or 2 steps. How many distinct ways to climb n stairs?

Example:

Input: n = 4
Output: 5

Solution (Java):

public int climbStairs(int n) {
    if (n <= 2) return n;
    int a = 1, b = 2;
    for (int i = 3; i <= n; i++) {
        int c = a + b; a = b; b = c;
    }
    return b;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 4: maximum subarray sum

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Problem Statement: Find the contiguous subarray with the largest sum.

Example:

Input: [-2, 1, -3, 4, -1, 2, 1, -5, 4]
Output: 6  // [4, -1, 2, 1]

Solution (Java):

public int maxSubArray(int[] nums) {
    int best = nums[0], cur = nums[0];
    for (int i = 1; i < nums.length; i++) {
        cur = Math.max(nums[i], cur + nums[i]);
        best = Math.max(best, cur);
    }
    return best;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 5: reverse a string

Show solution

Problem Statement: Given a string, return it reversed.

Example:

Input: "placement"
Output: "tnemecalp"

Solution (Java):

public String reverse(String s) {
    return new StringBuilder(s).reverse().toString();
}

Time Complexity: O(n)
Space Complexity: O(n)

Question 6: binary tree level order

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Problem Statement: Return the level-order traversal of a binary tree.

Example:

Input: [3,9,20,null,null,15,7]
Output: [[3],[9,20],[15,7]]

Solution (Java):

public List<List<Integer>> levelOrder(TreeNode root) {
    List<List<Integer>> res = new ArrayList<>();
    if (root == null) return res;
    Queue<TreeNode> q = new ArrayDeque<>();
    q.add(root);
    while (!q.isEmpty()) {
        int sz = q.size();
        List<Integer> level = new ArrayList<>();
        for (int i = 0; i < sz; i++) {
            TreeNode n = q.poll();
            level.add(n.val);
            if (n.left != null) q.add(n.left);
            if (n.right != null) q.add(n.right);
        }
        res.add(level);
    }
    return res;
}

Time Complexity: O(n)
Space Complexity: O(n)

Question 7: detect cycle in linked list

Show solution

Problem Statement: Return true if the linked list has a cycle.

Example:

Input: 3→2→0→-4→(back to 2)
Output: true

Solution (Java):

public boolean hasCycle(ListNode head) {
    ListNode slow = head, fast = head;
    while (fast != null && fast.next != null) {
        slow = slow.next;
        fast = fast.next.next;
        if (slow == fast) return true;
    }
    return false;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 8

Q8: Which SQL clause filters grouped rows after GROUP BY?

Solution:

HAVING filters aggregates; WHERE filters rows before grouping.

Answer: HAVING

Question 9

Q9: Which normal form removes transitive dependency?

Solution:

1NF: atomic values. 2NF: no partial dependency. 3NF: no transitive dependency.

Answer: 3NF

Question 10

Q10: In OOP, hiding internal details and showing only essential features is called?

Solution:

This is the definition of Encapsulation (often paired with abstraction in interviews).

Answer: Encapsulation

Question 11

Q11: Time complexity of binary search on a sorted array of n elements is?

Solution:

Each step halves the search space → O(log n).

Answer: O(log n)

Hiring volume

2024 Data: Oracle hired 500-1000 candidates from top engineering colleges in 2024. The company conducted placement drives at 50+ colleges across India.

Salary packages

2024 Packages: ₹18-25 LPA for freshers

Process changes

2024 Updates: Updated online assessment platform, new interview formats

Key insights from 2024 Oracle Online Assessment

  1. Coding Section is Critical: Must solve 2-3 coding problems correctly to advance
  2. Technical MCQs: Strong emphasis on CS fundamentals, OOP, DBMS, and Oracle-specific technologies
  3. Time Management: 2-3 coding problems in 60-90 minutes + 15-20 technical MCQs in 30-40 minutes + 10-15 aptitude in 20-30 minutes
  4. Success Rate: Only 15-20% cleared OA and advanced to interviews
  5. Platform: Oracle’s assessment platform or HackerRank
  6. Focus Areas: DSA, algorithms, database concepts, OOP, Oracle technologies

Oracle 2024 interview experiences

Based on candidate experiences from 2024 Oracle interviews:

2024 Interview Process:

  1. Online Assessment (90-120 minutes): Coding (2-3 problems) + Technical MCQs (15-20) + Aptitude (10-15)
  2. Technical Phone Screen (45-60 minutes): Coding problems, database concepts, Oracle technologies
  3. Onsite Interviews (3-4 rounds, 45-60 minutes each):
  • Coding rounds (1-2): Algorithms, data structures, problem-solving
  • Technical rounds: Database concepts, Oracle technologies, system design
  • HR round: Behavioral questions, company fit

Common 2024 Interview Topics:

  • Coding: Arrays, strings, trees, graphs, dynamic programming, SQL queries
  • Technical: Database concepts, Oracle database, PL/SQL, OOP, system design
  • Behavioral: Problem-solving approach, teamwork, motivation
  • Oracle Technologies: Oracle Database, Oracle Cloud, enterprise software concepts

2024 Interview Questions Examples:

  • Two Sum Problem
  • Reverse Linked List
  • SQL queries and database design
  • Oracle database concepts
  • System design for enterprise applications

Success Tips:

  • Strong coding performance is essential - solve problems optimally
  • Understand database concepts and Oracle technologies
  • Practice SQL queries and database design
  • Prepare behavioral examples using STAR format
  • Learn Oracle-specific technologies and cloud services

For detailed interview experiences, visit Oracle Interview Experience page.

Preparation tips for Oracle 2024 pattern

  1. Master Coding Fundamentals: Focus on solving 2-3 coding problems correctly - arrays, trees, graphs, DP
  2. Database Knowledge: Strong understanding of database concepts, SQL, and Oracle database
  3. Practice Previous Year Papers: Solve Oracle OA papers from 2020-2024 to understand patterns
  4. Time Management: Practice completing 2-3 coding problems in 60-90 minutes
  5. Technical MCQs: Practice CS fundamentals, OOP, DBMS, Oracle technologies
  6. LeetCode Practice: Solve 200+ LeetCode problems focusing on arrays, strings, trees, graphs (medium-hard difficulty)
  7. SQL Practice: Practice SQL queries, database design, and optimization
  8. Oracle Technologies: Learn Oracle Database, Oracle Cloud, enterprise software concepts
  9. Behavioral Preparation: Prepare examples using STAR format - leadership, teamwork, problem-solving
  10. Mock Tests: Take timed practice tests to improve speed and accuracy

Comments & Suggestions

2025 papers

Coding questions

Interview experience

Preparation guide

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