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Oracle Placement Papers 2025

Overview

This page is a working set of Oracle placement papers from 2025: from student reports questions, the 2025 online assessment pattern, and step-by-step solutions. Use it to see what Oracle actually asked in the latest cycle, how hard the rounds were, and which themes (DSA, system design, aptitude, or role-specific topics) mattered most. Practice the problems below under timed conditions, then cross-check with the interview and preparation guides if you are targeting an upcoming Oracle drive.

Download 2025 Placement Papers

Oracle 2025 paper 1

Latest Oracle placement paper with coding problems and solutions

Oracle 2025 paper 2

Additional 2025 Oracle paper with detailed solutions

Oracle 2025 paper 3

Another 2025 Oracle paper with comprehensive solutions

Oracle Online Assessment 2025 pattern

The 2025 exam pattern remains similar to 2024. For detailed exam pattern, see 2024 Papers.

Note: The pattern may have minor variations. Check the latest updates from the company.

Oracle Placement Papers 2025 - actual questions & solutions

This section contains practice questions styled on Oracle placement papers 2025 (recent-cycle 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: 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 2: detect cycle in linked list

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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 3: rotate array right by k

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Problem Statement: Rotate the array to the right by k steps.

Example:

Input: [1,2,3,4,5,6,7], k = 3
Output: [5,6,7,1,2,3,4]

Solution (Java):

public void rotate(int[] nums, int k) {
    k %= nums.length;
    reverse(nums, 0, nums.length - 1);
    reverse(nums, 0, k - 1);
    reverse(nums, k, nums.length - 1);
}
void reverse(int[] a, int l, int r) {
    while (l < r) { int t = a[l]; a[l++] = a[r]; a[r--] = t; }
}

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

Question 4: 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 5: 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 6: 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 7: 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 8

Q8: Which normal form removes transitive dependency?

Solution:

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

Answer: 3NF

Question 9

Q9: Which SQL clause filters grouped rows after GROUP BY?

Solution:

HAVING filters aggregates; WHERE filters rows before grouping.

Answer: HAVING

Question 10

Q10: Virtual memory is typically implemented using?

Solution:

OS uses demand paging (and sometimes segmentation) to implement virtual memory.

Answer: Demand paging

Question 11

Q11: Worst-case time complexity of quicksort is?

Solution:

Unbalanced partitions (already sorted with bad pivot) → O(n²).

Answer: O(n²)

Hiring volume

2025 Data: Oracle is actively hiring 600-1200 candidates in 2025. The company is conducting placement drives at 60+ colleges across India.

Salary packages

2025 Packages: ₹18-25 LPA for freshers (updated packages)

Process updates

2025 Updates: Latest assessment tools, improved interview process

Key insights from 2025 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
  7. Enhanced Emphasis: Optimal solutions and cloud technologies

Oracle 2025 interview experiences

Based on recent candidate experiences from 2025 Oracle interviews:

2025 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 cloud technologies
  3. Onsite/Virtual Interviews (3-4 rounds, 45-60 minutes each):
  • Coding rounds (1-2): Algorithms, data structures, problem-solving
  • Technical rounds: Database concepts, Oracle technologies, cloud services, system design
  • HR round: Behavioral questions, company fit

2025 Interview Trends:

  • Increased emphasis on Oracle Cloud and cloud technologies
  • More focus on optimal solutions and database optimization
  • Enhanced behavioral questions about adaptability and learning
  • Questions about cloud migration and enterprise solutions

Common 2025 Interview Topics:

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

Success Tips:

  • Strong coding performance is essential - solve problems optimally
  • Understand database concepts and Oracle Cloud technologies
  • Practice SQL queries and database optimization
  • Prepare behavioral examples using STAR format
  • Learn Oracle Cloud services and enterprise solutions

For detailed interview experiences from 2025, visit Oracle Interview Experience page.

Preparation tips for Oracle 2025 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, Oracle database, and Oracle Cloud
  3. Practice Previous Year Papers: Solve Oracle OA papers from 2020-2025 to understand evolving patterns
  4. Time Management: Practice completing 2-3 coding problems in 60-90 minutes
  5. Technical MCQs: Practice CS fundamentals, OOP, DBMS, Oracle technologies, cloud concepts
  6. LeetCode Practice: Solve 200+ LeetCode problems focusing on arrays, strings, trees, graphs (medium-hard difficulty)
  7. SQL Practice: Practice SQL queries, database design, optimization, and cloud databases
  8. Oracle Technologies: Learn Oracle Database, Oracle Cloud, enterprise software, cloud migration
  9. Behavioral Preparation: Prepare examples using STAR format - leadership, teamwork, adaptability
  10. Mock Tests: Take timed practice tests to improve speed and accuracy
  11. Cloud Knowledge: Understand cloud computing, Oracle Cloud services, enterprise solutions

Comments & Suggestions

2024 papers

Coding questions

Interview experience

Preparation guide

Oracle hub

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