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Updated: Oct 14, 2026
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Oracle 1Z1-921 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle MySQL 2021 Implementation Essentials |
| Exam Number: | 1Z0-921 |
| Real Exam Qty: | 52-78 |
| Exam Price: | USD $245 |
| Certificate Validity Period: | 3 years |
| Related Certifications: | Oracle MySQL Certified Professional |
| Available Languages: | English |
| Exam Format: | Multiple Choice, Multiple Select |
| Passing Score: | 65% |
| Exam Duration: | 90 minutes |
| Recommended Training: | Oracle MySQL 2021 Implementation Training |
| Exam Registration: | Pearson VUE Oracle University Registration |
| Sample Questions: | Oracle 1Z1-921 Sample Questions |
| Exam Way: | Online proctored or onsite at authorized test centers |
| Pre Condition: | No mandatory prerequisites; recommended to have hands-on experience with MySQL Enterprise Edition |
| Official Syllabus URL: | https://education.oracle.com/exam-1z0-921-mysql-2021-implementation-essentials/pexam_1Z0-921 |
Oracle 1Z1-921 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| MySQL Database Service and HeatWave | 10% | - HeatWave setup and usage - High availability configuration - Service overview and provisioning - Monitoring and management |
| Oracle MySQL Enterprise Product Suite | 10% | - Products and features of MySQL Enterprise Edition - Differences between MySQL Enterprise Edition, Community Edition and Standard Edition - Oracle products certified to work with MySQL Enterprise Edition |
| Backup and Recovery | 10% | - MySQL Enterprise Backup overview - Install and configure backup - Backup encryption and compression - Data import/export with MySQL Workbench |
| MySQL Security | 20% | - MySQL Enterprise Firewall - Transparent Data Encryption (TDE) - Password policies and authentication - Authorization and privilege management - MySQL Enterprise Audit - Data Masking and De-identification |
| Installation and Architecture | 15% | - Install MySQL Enterprise Server - MySQL infrastructure architecture overview - Configure MySQL Enterprise Server settings |
| High Availability and Replication | 10% | - High availability solutions overview - GTID-based replication - InnoDB Cluster deployment - Replication concepts and setup |
| MySQL Enterprise Monitor | 10% | - Custom Advisors configuration - Query Analyzer usage - Architecture: Service Manager and Agents - Features and benefits |
| Database Design | 15% | - Create and manage databases and tables - MySQL data types - Table partitioning - Basic SQL queries - MySQL Document Store - Indexes, constraints and joins |
Oracle MySQL 2021 Implementation Essentials Sample Questions:
The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?
- A. To safely purge binary log files, perform these steps:
- B. Delete all binlog files manually on the file system to release storage spaces.
- C. Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.
- D. On the Master server, disable binlog by removing the --log-bin option.
- E. Execute the purge binary logs statement without argument.
Correct Answer: A,C 🗳️
Which query will find rows in a table that have no counterpart in another table?
- A. SELECT t1.name, t2.name2FROM employee AS t1 INNER JOIN info AS t2 ON t1.name= t2.name2;
- B. SELECT *FROM table1 INNER JOIN table2 ON table1.id=table2.id WHERE table1.id=! table2.id;
- C. SELECT left_tbl.*FROM left_tbl LEFT JOIN right_tbl ON left_tbl.id=right_tbl.idWHERE right_tbl.id IS NULL;
- D. SELECT t1.name, t2.name2FROM employee t1 INNER JOIN info t2 WHERE t1.name=t2.name;
Correct Answer: C 🗳️
Which three prerequisites are needed for creating an Oracle Linux VM instance in the Oracle Cloud Infrastructure?
- A. ssh key pair
- B. existing VCN
- C. subnet configured on a Virtual Cloud Network (VCN)
- D. bare metal Oracle Linux shape
- E. Custom Image
- F. Object Storage
Correct Answer: D,E,F 🗳️
Which statement adds a column with the largest integer data type?
- A. ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(15,10);
- B. ALTER TABLE SCIENTIFIC ADD scientific_value BIGINT;
- C. ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(10,10);
- D. ALTER TABLE SCIENTIFIC ADD scientific_value INTEGER;
Correct Answer: B 🗳️
Which two statements are correct about MySQL Enterprise Edition?
- A. MySQL configuration can be changed in /etc/lib/myi.cnf.
- B. Oracle offers 24x7, global support for MySQL Enterprise Edition products installed on Oracle Cloud Infrastructure Compute Instances.
- C. MySQL Enterprise Product Suite can be installed on an Oracle Cloud Infrastructure Virtual Cloud Network.
- D. Oracle MySQL Enterprise tools & plugins are available as optional services (installation Feature Pack I/II).
- E. MySQL Enterprise Edition can be installed on an Oracle Cloud Infrastructure Compute Instance.
Correct Answer: A,D 🗳️
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