Oracle Interview Questions

Working at the second-largest software company, Oracle, has its appeal. The company numbered 135,000 employees in 2020. Revenue totaled $39.1 billion with a net income of $10.1 billion and a market cap of $171.9 billion. In addition to over 290 offices, Oracle has five innovation hubs in Austin, TX; Reston, VA; Burlington, MA; Bangalore, India and Santa Monica, CA.

For those unfamiliar, Oracle sells database software and technology, cloud engineering systems, and enterprise software products, especially for database management systems. In 2020, Oracle was the second-largest software company based on revenue and market share trailing only Microsoft.

Oracle Interview Questions, oracle dba interview questions, oracle sql interview questions, oracle database interview questions, basic oracle queries interview questions, oracle phone interview, oracle interview process

A sense of company history and culture as well as Oracle interview questions will help aspiring employees land a role.

Table of Contents:

  1. Oracle History & Culture
  2. Life At Oracle
  3. Oracle Interview Process
  4. Oracle Dba Interview Questions
  5. Oracle Phone Interview

Oracle History & Culture

Your answers to Oracle interview questions can be informed by a sense of the company history and culture. Oracle was founded in California by Larry Ellison and Bob Miner and was based in the Bay Area until recently. In 2020 the company relocated to Austin, Texas as part of an effort to have a more flexible approach to the workforce. The company does not have immediate plans to move staff to Austin.

Life At Oracle

Why work at Oracle? Or if you are already sold, what should you know about the company culture and life at Oracle?

Oracle emphasizes the core values of integrity, mutual respect, teamwork, communication, innovation, customer satisfaction, quality, fairness, compliance and ethics. Employees are often considered helpful and collaborative.

One Cloud Specialist explains why she returned to Oracle. Life at Oracle for her means being part of the Solution Engineering team and seeing how her work improves people’s lives. Oracle employees also benefit from continual learning and development opportunities: an online learning library, tuition reimbursement, and Internal Talent Advisors.

Oracle offers a flexible work from home policy both in response to COVID and to help level the playing field for women. The Oracle Women’s Leadership development program offers opportunities for employees to connect with mentors and one another.

Oracle works to advance sustainable business by investing in initiatives that make running the company and building its products and services more ecologically friendly. The Corporate Citizenship Communities connects employees who have a passion for volunteering. In the past three years, the program developed 32 volunteer groups.

Oracle Interview

Oracle Interview Process

The Oracle interview process follows a standard process to make hiring more equitable. The interview process can be considered lengthy but fortunately is also considered of average difficulty for similar roles.

The first step of the process is a phone screening interview with HR. Candidates passing this phase then proceed to a technical phone interview which includes questions about the candidates background and technical coding. The final stage is an interview with the team managers, onsite before COVID-19, with a combination of cultural and fit questions and technical coding and quantitative thinking questions. There are many sources for common oracle interview questions. Below, we have compiled key questions for the common mid-level roles.

Oracle Dba Interview Questions

Oracle dba interview questions and answers

      • Why do we use the materialized view instead of a table or views?
      • How is the Clustered Index different from the Non-Clustered Index?
      • What are the different responsibilities of a DBA?
      • What do you mean by Database Normalization and why is it important?
      • Can you list down the different components of physical and logical database structure?
      • What is a SYSTEM tablespace and why do we need it?
      • What do you mean by SGA and how is it different from PGA?
      • What is a password file in a database and why is it required when a user can be authenticated using data dictionary tables?
      • What are the different types of backups that are available in Oracle?
      • What do we mean by hot backup and cold backup and how are they different?

Oracle database interview questions and answers

      • How to check opatch applied or not in our Oracle home?
      • What is sqlnet.ora?
      • What are the different components of physical and logical database structure?
      • What is Database Writer (DBWR)?
      • What is a listener process?
      • What is the difference between SPFILE and PFILE?
      • What is the purpose of collecting statistics?
      • What is an Oracle index?
      • If the table is fragmented, how would you rebuild it?
      • What are the different tools that are provided by Oracle to assist performance monitoring?

Oracle SQL Interview Questions

Oracle SQL interview questions to prepare include the following: [Source]

      1. What is the difference between SQL and MySQL?
      2. What are the different subsets of SQL?
      3. What do you mean by DBMS? What are its different types?
      4. What do you mean by table and field in SQL?
      5. What are joins in SQL?
      6. What is the difference between CHAR and VARCHAR2 datatypes in SQL?
      7. What is the Primary key?
      8. What are Constraints?
      9. What is the difference between DELETE and TRUNCATE statements?
      10. What is the Unique key?

Oracle Phone Interview

The typical Oracle phone interview lasts 25 to 30 minutes and is a screening procedure that proceeds the other interviews. Typical Oracle interview questions during the phone interview can include the following:

    • Why (function applying for)?
    • Why Oracle?
    • Where do you see yourself in 5-10 years?
    • Explain what you would be doing in (position applying for)?
    • Explain your background and how it aligns with the job description for this role.


Preparing for common Oracle interview questions based on the intended role will make the Oracle interview process much smoother. And on top of that, many of these questions crossover with interview questions for roles at competitors.


Additional Reading:




Filed Under: Corporate Interviews, Technology in Consulting