Oracle Technical Interview Analysis

Oracle interviews emphasize database and system fundamentals. This article shares Oracle technical interview experiences. oavoservice helps you prepare comprehensively.

📋 Interview Focus

1. SQL Optimization - Query performance tuning
2. Database Design - Normalization and Indexes
3. Java Basics - Multithreading and Collections
4. System Design - High Availability Architecture

🎯 Core Questions

SQL Optimization

-- Before Optimization
SELECT * FROM orders o
JOIN customers c ON o.customer_id = c.id
WHERE o.order_date > '2024-01-01';

-- Optimized
SELECT o.id, o.order_date, c.name
FROM orders o
JOIN customers c ON o.customer_id = c.id
WHERE o.order_date > '2024-01-01'
AND o.status = 'completed'
-- INDEX(o order_date_idx);

Java Multithreading Question

public class ThreadSafeCounter {
    private final AtomicInteger count = new AtomicInteger(0);
    
    public void increment() {
        count.incrementAndGet();
    }
    
    public int getCount() {
        return count.get();
    }
}

💼 How oavoservice Helps

SQL Optimization - Query performance tuning techniques Java Depth - Concurrency and JVM System Design - Enterprise Architecture Interview Strategy - Understanding Oracle Culture

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Tags: #Oracle #SQLOptimization #Java #Database #VOHelp #InterviewPrep #1point3acres

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