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Last Updated: Oct 15, 2026
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Oracle 1Z0-066 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle Database 12c: Data Guard Administration |
| Exam Number: | 1Z0-066 |
| Available Languages: | English |
| Real Exam Qty: | 74 |
| Certificate Validity Period: | Valid until retirement; no fixed expiration |
| Passing Score: | 61% |
| Exam Duration: | 120 minutes |
| Exam Price: | $245 USD |
| Exam Format: | Multiple Choice |
| Related Certifications: | Oracle Database Administration 2019 Certified Professional Oracle Database 12c Administrator Certified Professional Oracle Database 11g Administrator Certified Professional |
| Recommended Training: | Oracle Database 12c: Data Guard Administration |
| Exam Registration: | Oracle University Exam Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or onsite at Oracle authorized testing centers |
| Pre Condition: | Must hold one of: Oracle Database 12c Administrator Certified Professional, Oracle Database 11g Administrator Certified Professional, or Oracle Database Administration 2019 Certified Professional |
| Official Syllabus URL: | https://education.oracle.com/oracle-database-12c-data-guard-administration/pexam_1Z0-066 |
Oracle 1Z0-066 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Data Guard Broker | 12% | - Create and manage broker configuration - Monitor via EM and DGMGRL - Architecture and benefits |
| Data Protection Modes | 8% | - Maximum Protection, Availability, Performance - Switch between protection modes |
| Snapshot and Logical Standby | 8% | - Create and manage snapshot standby - SQL Apply filtering - Convert between physical and snapshot - Create and manage logical standby |
| Backup, Recovery and Flashback | 8% | - Archive log management - Flashback Database usage - RMAN backup to standby |
| Manage Network Services | 6% | - Application Continuity - Configure client connectivity - Automatic client failover |
| Patching, Upgrading and Optimization | 8% | - Optimize redo transport - Optimize SQL Apply performance - Rolling upgrades and patching |
| Active Data Guard Features | 10% | - Real-time Query access - Temporary Undo and Global Sequences - Far Sync instance - Automatic Block Media Recovery |
| Oracle Data Guard Basics | 8% | - Benefits and use cases - Standby database types: physical, logical, snapshot - Multi-tenant database support - Architecture and components |
| Role Transitions | 10% | - Perform switchover operations - Perform failover operations - Fast-Start Failover configuration - Observer management |
| Create Physical Standby Database | 12% | - Using Enterprise Manager Cloud Control - Verify and test configuration - Using SQL and RMAN duplicate command |
1Z0-066 FAQ — Efficient Preparation Starts Here
Must hold one of: Oracle Database 12c Administrator Certified Professional, Oracle Database 11g Administrator Certified Professional, or Oracle Database Administration 2019 Certified Professional Eligibility rules do change, so confirm the current requirements on the official page (official 1Z0-066 exam page) before booking.
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$245 USD per attempt, 61% to pass. Since a retake costs the full fee, prepare with direction: the 112 practice questions from Exams-boost focus your effort where the exam points are.
The Oracle Database 12c: Data Guard Administrator is Oracle's certification exam for Oracle Certified Expert, Oracle Database 12c: Data Guard Administrator, at the Expert level. It validates applied skills employers hire for — a credential worth the effort. Related credentials include Oracle Database 12c Administrator Certified Professional, Oracle Database 11g Administrator Certified Professional, Oracle Database Administration 2019 Certified Professional.
The Oracle Database 12c: Data Guard Administrator blueprint covers 10 domains — including Role Transitions (10%), Create Physical Standby Database (12%), Patching, Upgrading and Optimization (8%). The weightings are your efficiency map: heavy domains first. Every subtopic appears in the outline above.
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Yes — download the free Oracle Database 12c: Data Guard Administrator demo and judge the question quality before paying. Every purchase stays valid for 365 days with free updates throughout, renewable afterward at 50% off.
Oracle Database 12c: Data Guard Administrator Sample Questions:
Which two Data Guard features require the use of flashback database by the broker? (Choose two.)
- A. Far Sync Instances
- B. Fast-Start Failover
- C. Real Time Query
- D. Snapshot Standby databases
- E. Read-Mostly physical standby implementations
Correct Answer: B,D 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
Examine the Data Guard configuration:
DGMGRL> show configuration:
Configuration Animals
Protection Mode: MaxAvailability
Databases:
dogs Primary database
sheep Logical standby database
cats Logical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
Which three will be true after a switchover to Sheep? (Choose three.)
- A. Dogs will be a logical standby database.
- B. Sheep will be the primary database.
- C. Cats will be a disabled logical standby database.
- D. Cats will be an enabled logical standby database.
- E. Dogs will be a physical standby database.
Correct Answer: A,B,D 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxPerformance
Databases:
dogs- Primary database
sheep- Physical standby database
cats- Snapshot standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
You receive an error while attempting to raise the protection mode to Maximum Protection:
DGMGRL> edit configuration set protection mode as maxprotection;
Error: ORA-16627: operation disallowed since no standby databases would remain to support protection mode Failed.
What can you conclude based on this error?
- A. The redo transport mode is set to ASYNC for both standby databases.
- B. Cats is a snapshot standby database.
- C. The redo transport mode is set to ASYNC for the standby database Sheep.
- D. The redo transport mode is set to ASYNC for the standby database Cats.
Correct Answer: C 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
Which two statements are true for Data Guard environments with multi-tenant databases? (Choose two.)
- A. The Data Guard broker automatically always opens the pluggable databases of a standby database after a role change operation.
- B. The CDBDBA privilege must be used instead of the SYSDBA privilege for connections as SYS to the root container of a multi-tenant standby database.
- C. Different pluggable databases within a logical standby database may have different guard statuses.
- D. A multi-tenant standby database can have fewer pluggable databases than the primary container database.
- E. The Data Guard broker automatically opens all pluggable databases of a primary database a role change operation.
Correct Answer: B,E 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
Which three statements are true about snapshot standby databases? (Choose three.)
- A. A snapshot standby database can have Real-Time Query enabled.
- B. If datafiles grow while a database is a snapshot standby database, then they shrink when converted back to a physical standby database.
- C. Snapshot standby databases may be used for rolling release upgrades.
- D. A guaranteed restore point is created automatically when a physical standby database is converted into a snapshot standby database.
- E. Flashback logs are used to convert a snapshot standby database back into a physical standby database.
Correct Answer: B,D,E 🗳️
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