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.

2025 Oracle Pattern

The 2025 Oracle placement process includes DSA and system design. Stay updated with the latest patterns and question types.

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

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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)

2025 hiring trends

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

Related resources

Oracle 2024 papers→

Previous year Oracle placement papers with questions and solutions

Oracle coding questions→

Complete collection of Oracle coding problems with solutions

Oracle interview experience→

Real interview experiences from successful candidates

Oracle preparation guide→

Comprehensive preparation strategy for Oracle placement

Oracle main page→

Complete Oracle placement guide with eligibility, process, and salary

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Practice 2025 papers to stay updated with latest patterns and prepare effectively!