Many candidates who eventually earn the Oracle MySQL 8.0 Database Developer credential failed their first try — what changed the outcome for them was switching to a smarter preparation method. GetValidTest supports that switch with 66 verified practice questions for the 1Z0-909 exam and three study formats to match how you learn best.
Oracle 1Z0-909 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | MySQL 8.0 Database Developer |
| Exam Number: | 1Z0-909 |
| Related Certifications: | Oracle Certified Professional, MySQL 8.0 Database Developer |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 65 |
| Passing Score: | 62% |
| Exam Format: | Multiple Choice Questions (MCQ) |
| Available Languages: | English |
| Exam Price: | USD 245 (may vary by country) |
| Sample Questions: |  |
| Exam Way: | Onsite or through test provider (Pearson VUE / Oracle testing platform) |
| Official Syllabus URL: | https://education.oracle.com/mysql-80-database-developer/pexam_1Z0-909 |
Oracle 1Z0-909 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Transactions | - Understand locking mechanisms within MySQL - Control transactions in SQL - Control transactions in applications - Resolve consistency problems with isolation levels |
| Connectors and APIs | - Handle special values - Secure credentials and connections - Retrieve data from the database by using a connector - Choose between connectors for a given application - Demonstrate connector use, management and configuration |
| Data-driven Applications | - Aggregate and summarize data - Set SQL Modes to change MySQL behavior - Display query results - Advanced Report Generation - Use prepared statements - Handle and interpret errors and warnings |
| JSON and Document Store | - Explain application development with NoSQL and XDevAPI - Process data in JSON documents - Create and access a document store - Use MySQL Shell to access document stores - Create and store JSON documents |
| MySQL Stored Programs | - Create and execute stored routines - Schedule database operations - Create and execute triggers - Explain the programming constructs used in stored routines |
| MySQL Schema Objects and Data | - Design, create, and alter views - Store and process numeric data - Store and process spatial data - Store and process string data - Store and process temporal data |
| Query Optimization | - Rewrite queries for optimization - Use indexes for optimization - Analyze queries for optimization |
Common Questions from Retake Candidates
You can confirm the current eligibility requirements on the official 1Z0-909 exam page before you register.
The Oracle MySQL 8.0 Database Developer exam contains 65 questions, and you will have 90 minutes minutes to complete them. Practicing under the same time pressure is one of the most effective ways to prepare for a retake.
Each of the three versions — PDF, PC test engine, and online test engine — has its own strengths, and the fastest way to find your fit is to try them. Free demos are available for every version, so download each one and compare how the questions, layout, and testing modes feel before you commit.
Our prices are listed openly on the website, and we run discount promotions during special activities throughout the year. Because promotion dates are not fixed, contact our staff to ask about the current activity schedule — they will tell you exactly when the next discount window opens.
The Oracle MySQL 8.0 Database Developer practice questions are organized around the official exam objectives. Key topics include:
- Query Optimization ()
- Connectors and APIs ()
- Data-driven Applications ()
Studying topic by topic helps you find the weak areas that cost you points last time.
This package includes 66 practice questions for the Oracle MySQL 8.0 Database Developer exam, with verified answers reviewed by an experienced team of IT experts and certified professionals.
The Oracle MySQL 8.0 Database Developer exam requires a score of 62% to pass, and the official registration fee is USD 245 (may vary by country). Retake candidates should budget for both the exam fee and a preparation tool that is actually worth the money.
Oracle MySQL 8.0 Database Developer Sample Questions:
Which two are true about MySQL Document Store?
- A. It depends heavily on strictly typed data.
- B. It allows one to bypass the SQL layer of the server.
- C. It can store documents greater than 4 GB.
- D. It helps to store data items in a schema-less key-value store.
- E. There is no access to relational tables.
Correct Answer: B,D 🗳️
Examine this statement which executes successfully:
SET @ir := 2;
Which query updates the value of @r to 0?
- A. SELECT 'Car' RLIKE 'Ca?' INTO @r;
- B. SELECT 'Car' REGEXP('Ca?') >= 0 INTO @r;
- C. SELECT 'Car' LIKE 'Ca?' INTO @r;
- D. SELECT STRCMP('Car'/Ca?') >= 0 INTO @r;
Correct Answer: A 🗳️
Examine these statements issued from Session 1 which execute successfully:
Now, examine this statement issued from Session 2:
What is the outcome of the update statement in Session 2?
- A. The row will be updated immediately.
- B. The transaction in Session 1 will be rolled back automatically.
- C. A deadlock will occur.
- D. The statement will wait for the transaction in Session 1 to finish.
Correct Answer: B 🗳️
How does InnoDB choose deadlock victims in MySQL?
- A. It chooses the transaction with the least accumulated CPU time.
- B. It chooses the transaction with the most accumulated CPU time.
- C. It chooses the transaction with the lowest transaction ID.
- D. It chooses the transaction with the fewest modified rows.
- E. It chooses the transaction randomly.
- F. It chooses the transaction with the most modified rows.
Correct Answer: E 🗳️
Examine these commands which execute successfully in the sequence shown in Sessions S1 and S2:
Now, examine this statement that execute successfully in s1:
S1> SELECT * FROM emp;
Which is true about the result of the select statement?
- A. The inserted row is returned because the transaction is auto committed in S2.
- B. The inserted row is returned because the isolation level is RPEATABLE READ in S1.
- C. The inserted row is not returned because the isolation level is READ COMMITTED in S2.
- D. The inserted row is not returned because the transaction still active in s2.
Correct Answer: D 🗳️
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