Oracle Interview Questions
Check out 30 of the most common Oracle interview questions and take an AI-powered practice interview
What is Oracle and when should you use it?
How do you connect to Oracle?
What are the basic data types in Oracle?
How do you create and manage databases in Oracle?
What are tables/collections in Oracle?
How do you perform CRUD operations in Oracle?
What are primary keys and foreign keys in Oracle?
How do you write basic queries in Oracle?
What are joins/lookups in Oracle?
How do you handle NULL values in Oracle?
What are constraints in Oracle?
How do you import/export data in Oracle?
How do you optimize queries in Oracle?
What is indexing in Oracle?
How do you handle transactions in Oracle?
What are stored procedures/functions in Oracle?
How do you implement data validation in Oracle?
What is normalization/denormalization in Oracle?
How do you handle concurrent access in Oracle?
What are triggers in Oracle?
How do you implement full-text search in Oracle?
What is query execution plan in Oracle?
How do you handle large datasets in Oracle?
What are views in Oracle?
How do you monitor performance in Oracle?
How do you implement sharding in Oracle?
What is replication strategy in Oracle?
How do you handle distributed Oracle?
What are advanced optimization techniques in Oracle?
How do you implement high availability in Oracle?
Frequently Asked Questions
What is Oracle used for?
Oracle is widely used for storing, managing, and retrieving data efficiently. It's valued for its performance, reliability, and extensive ecosystem.
How long does it take to learn Oracle?
Learning Oracle basics typically takes 1-3 months of dedicated study. Achieving proficiency requires 6-12 months of practice and real-world projects. Mastery comes with years of experience and continuous learning.
What are the job prospects for Oracle developers?
Oracle developers are in high demand across industries. With strong Oracle skills, you can pursue roles in database administration, data engineering, with competitive salaries ranging from ₹7-25 LPA.
What prerequisites are needed for learning Oracle?
Understanding of data structures and basic SQL are helpful prerequisites for learning Oracle.
Which companies use Oracle?
Major companies using Oracle include Google, Amazon, Microsoft, Meta, Netflix, and many more. Oracle is adopted across startups to enterprise organizations.
Introduction
Preparing for database interviews with Oracle expertise? Database knowledge is fundamental for any developer working with data-driven applications.
Oracle is widely used for data storage, retrieval, and management. Understanding its architecture, query optimization, and best practices is essential.
This guide covers Oracle interview questions ranging from basic CRUD operations to advanced topics like indexing, replication, and performance tuning.
Whether you're a backend developer or data engineer, these questions will help you demonstrate strong database expertise.
