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Last Updated: Oct 21, 2026
No. of Questions: 66 Questions & Answers with Testing Engine
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Oracle exams have a reputation for tough wording and scenario-based questions, and the 1z1-909 exam is no exception. Working through the 66 practice questions from ActualTestsQuiz gets you comfortable with that style long before exam day.
Oracle 1z1-909 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | MySQL 8.0 Database Developer |
| Exam Number: | 1Z0-909 |
| Real Exam Qty: | 65 |
| Exam Format: | Multiple Choice |
| Available Languages: | English |
| Related Certifications: | Oracle Certified Professional MySQL 8.0 MySQL 8.0 Database Administrator |
| Passing Score: | 62% |
| Exam Duration: | 90 minutes |
| Exam Price: | USD 245 (varies by region) |
| Recommended Training: | Become a MySQL 8.0 Database Developer Professional Learning Path (Oracle) |
| Exam Registration: | Oracle Certification Exam Page |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored exam (Oracle testing center / remote proctoring) |
| Pre Condition: | Recommended experience with MySQL 8.0 database development and SQL application programming; no strict mandatory prerequisite exam officially enforced. |
| Official Syllabus URL: | https://education.oracle.com/mysql-80-database-developer/pexam_1Z0-909 |
Oracle 1z1-909 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: MySQL Stored Programs | - Stored program development
|
| Topic 2: JSON and Document Store | - JSON processing and NoSQL features
|
| Topic 3: Transactions | - Transaction management
|
| Topic 4: Query Optimization | - Performance tuning
|
| Topic 5: MySQL Schema Objects and Data | - Database object design
|
| Topic 6: Data-driven Applications | - Application-level SQL usage
|
| Topic 7: Connectors and APIs | - Connector selection and usage
|
Answers to Common Questions About the Oracle 1z1-909 Exam
Yes. ActualTestsQuiz offers a free PDF demo of the 1z1-909 practice questions so you can check the quality, the format, and the difficulty level before you spend anything. After you purchase, you also receive 365 days of free updates, and if the product expires you can extend the update service at a 50% discount from your member zone.
The 1z1-909 exam contains 65 questions and gives you 90 minutes to complete them. That works out to a brisk pace, so you cannot afford to stall on a single tricky item — flag it, move on, and circle back if time allows. Before exam day, run at least two timed mock sessions with the ActualTestsQuiz desktop or online test engine; practicing against a real clock turns the official time limit into a comfortable rhythm instead of a source of panic.
The 1z1-909 exam (full name: MySQL 8.0 Database Developer) is a Oracle certification exam that leads to the Oracle Certified Professional (OCP) MySQL 8.0 Database Developer credential, positioned at the Professional level. It validates the skills Oracle expects from professionals working with its technologies, and passing it is the key step toward getting certified. It also sits within a broader certification path that includes MySQL 8.0 Database Administrator, Oracle Certified Professional MySQL 8.0.
The Oracle MySQL 8.0 Database Developer exam is organized into 7 domains. The main areas include Transactions, Data-driven Applications, and MySQL Stored Programs. Scroll up to the exam syllabus section on this page for the complete topic-by-topic outline.
Recommended experience with MySQL 8.0 database development and SQL application programming; no strict mandatory prerequisite exam officially enforced.
Eligibility requirements can change, so before you register, confirm the latest criteria on the official Oracle exam page.
To pass the 1z1-909 exam you need a score of 62%, and the official registration fee is USD 245 (varies by region). Keep in mind that a failed attempt comes at full price: retaking the exam means paying the entire fee again. A smart way to protect that investment is to self-test first — work through the 66 practice questions at ActualTestsQuiz until your timed scores sit comfortably above the passing line before you book a seat.
Oracle recommends the following training resources for the Oracle MySQL 8.0 Database Developer:
Official courses build the theory; pair them with the 66 practice questions from ActualTestsQuiz to turn that knowledge into exam-ready speed and accuracy.
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You can register for the Oracle MySQL 8.0 Database Developer through the official channels below:
The 1z1-909 exam is delivered Online proctored exam (Oracle testing center / remote proctoring), so choose the option that best fits your schedule when you book.
Oracle MySQL 8.0 Database Developer Sample Questions:
The variables c and d are declared as integer types.
Examine these initialization statements with placeholder value <p1>, which execute successfully:
Now, examine this loop which executes successfully:
Which loop results in the same value of d for all valid values of <p1>?
A)
B)
C)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Correct Answer: D 🗳️
You are using buffered queries with PHP mysqli in a browser-based web application. Which three are true?
- A. Buffered queries should be used on large tables when the result size is unknown.
- B. Buffered queries are enabled by default.
- C. Additional queries on the same session are blocked until the result set is released.
- D. Results are sent from the server to the browser for buffering.
- E. Results are sent to the calling PHP process for buffering.
- F. Large results can have a negative impact on performance.
- G. Buffered queries must be explicitly enabled using mysqliuseresult.
Correct Answer: A,F,G 🗳️
You must write a statement that combines the first_name and last_name columns from the employees table as "last_name, first_name." Which two statements will do this?
- A. SELECT last_name + ', ' + first_name FROM employees;
- B. SELECT CONCAT(last name,', ',first_name) FROM employees;
- C. SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;
- D. SELECT last_name, ' , ',first_name FROM employees;
- E. SELECT GROUP_CONCAT(last_name, first_name) FROM employees;
Correct Answer: B,C 🗳️
A server hosts MySQL Server and Apache Webserver supporting a PHP/PDO based application.
The application must be migrated from PHP to their Java application server on another host. The MySQL instance remains on the original host.
Examine the PDO connection string used in the existing application:
Mysql:host-localhost;dbname=sales;unix_socket=/var/run/mysql.sock
Which two prevent Java from using the Unix socket?
- A. The socket can only be accessed from the local host.
- B. Java treats the socket file as insecure.
- C. The X Dev API protocol must be enabled to use sockets in Connector/J driver.
- D. socket is a reserved word in Java.
- E. The socket is not implemented in Connector/J driver.
Correct Answer: B,E 🗳️
Examine this bar graph based on columns from the players table:
Which two statements would generate this bar graph?
- A. SELECT Name, Gender, Sport, RPAD ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
- B. SELECT Name, Gender, Sport, REPEAT('# 'Y GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
- C. SELECT Name, Gender, Sport, CHAR_LENGTH ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
- D. SELECT Name, Gender, Sport, LENGTH (GPA*10, '# ') AS GPA_Graph FROM players ORDER BY GPA DESC;
- E. SELECT Name, Gender, Sport, CONCAT ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
Correct Answer: A,B 🗳️
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