Exam Name: Oracle Database 12c: Data Guard Administrator
Certification Provider: Oracle
Corresponding Certification: Oracle Database 12c
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Staying current is half the battle: Oracle refreshes its exams, and TrainingDump refreshes your materials to match. Every 1Z0-066 purchase carries 365 days of free updates, so the 112 practice questions you study in 2026 reflect the live Oracle Database 12c: Data Guard Administrator.
Oracle 1Z0-066 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle Database 12c: Data Guard Administrator |
| Exam Number: | 1Z0-066 |
| Available Languages: | English |
| Related Certifications: | Oracle Database 12c Administrator Certified Professional Oracle Database 12c Certified Implementation Specialist |
| Exam Format: | Multiple choice |
| Certificate Validity Period: | Version-specific (generally does not expire unless superseded by newer certification versions) |
| Exam Duration: | 120 minutes |
| Passing Score: | Approximately 66% |
| Recommended Training: | Oracle University Training |
| Exam Registration: | Oracle Certification Registration |
| Sample Questions: | Oracle 1Z0-066 Sample Questions |
| Exam Way: | Proctored exam via Pearson VUE testing centers or online proctoring (availability may vary by region) |
| Pre Condition: | Recommended: Oracle Database 12c Administrator Certified Associate (OCA) or equivalent database administration experience |
| Official Syllabus URL: | https://education.oracle.com |
Oracle 1Z0-066 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Redo Transport and Apply | - Redo apply and recovery processes - Redo transport services |
| Topic 2: Configuration and Management | - Creating and configuring a Data Guard environment - Data Guard Broker configuration and management |
| Topic 3: Role Transitions | - Switchover operations - Failover scenarios and best practices |
| Topic 4: Oracle Data Guard Architecture | - Data Guard components and terminology - Primary and standby database concepts |
| Topic 5: Monitoring and Troubleshooting | - Resolving synchronization and apply issues - Monitoring Data Guard configuration |
Oracle Database 12c: Data Guard Administrator FAQ: Straight Answers Before You Study
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Recommended: Oracle Database 12c Administrator Certified Associate (OCA) or equivalent database administration experience
Vendor requirements do change, so before you commit to an exam date, confirm the latest eligibility rules on the official Oracle exam page.
The Oracle Database 12c: Data Guard Administrator syllabus is split into 5 domains, anchored by Redo Transport and Apply, Role Transitions, and Configuration and Management. The full breakdown sits in the syllabus section above — treat it as the checklist that decides where your study hours go.
The 1Z0-066 exam, officially the Oracle Database 12c: Data Guard Administrator, is Oracle's benchmark for proving you can work with its technologies in professional settings; passing it awards the Oracle Database 12c Data Guard Administrator (Oracle Certified Specialist) certification, which sits at the Professional level. Because the credential is issued by the vendor itself, it carries weight with employers that self-assessed skills simply cannot match. It also opens the road toward Oracle Database 12c Administrator Certified Professional, Oracle Database 12c Certified Implementation Specialist.
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Registration for the Oracle Database 12c: Data Guard Administrator runs through the official channels below:
Worth knowing before you book: the 1Z0-066 exam is delivered Proctored exam via Pearson VUE testing centers or online proctoring (availability may vary by region).
Oracle Database 12c: Data Guard Administrator Sample Questions:
Which three are true about the rolling release upgrade method for Data Guard environments using a transient Logical Standby database? (Choose three.)
- A. The transient logical standby database used for the rolling release upgrade can run with a newer version of the Oracle software than the primary database.
- B. The transient logical standby database used for the rolling release upgrade must have the same DBID as the primary database.
- C. The original primary database can ship redo to any standby database that is part of the Data Guard configuration during the rolling release upgrade process.
- D. SELECT GUARD_STATUS FROM V$DATABASE; must return NONE as a prerequisite for the rolling release upgrade with a transient logical standby database.
- E. A rolling release upgrade can be performed with the Data Guard environment in any protection mode.
Correct Answer: A,C,D 🗳️
Which two are true concerning the configuring of Flashback database in a Data Guard environment? (Choose two.)
- A. It permits a primary database that was disabled after failover to be reinstated as a standby.
- B. It enables the use of far sync instances.
- C. It is a prerequisite for the use of Fast Start Failover.
- D. It is required in order for a snapshot standby database to be converted to a physical database.
- E. It permits a physical standby database to be converted to a snapshot standby database.
Correct Answer: B,C 🗳️
Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).
Which two are prerequisites for creating a standby database using Enterprise Manager cloud control? (Choose two.)
- A. The primary host and the proposed standby database host must run the same operating system.
- B. The primary database must have FORCE LOGGING enabled.
- C. The primary database must be in archivelog mode.
- D. A backup of the primary database must exist.
- E. The primary database must have flashback enabled.
- F. The primary database instance must be started using an SPFILE.
Correct Answer: B,C 🗳️
Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).
Examine the Data Guard configuration:
Properties:
FastStartFailoverThreshold= '30'
OperationTimeout= '30'
TraceLevel= 'USER'
FastStartFailoverLagLimit= '30'
CommunicationTimeout= '180'
ObserverReconnect= '10'
FastStartFailoverAutReinstate= 'TRUE'
FastStartFailoverPmyShutdown= 'TRUE'
BystandersFollowRoleChange= 'all'
ObserverOverride= 'FALSE'
Fast-Start Failover:ENABLED
Threshold:30 seconds
Target:dogs
Observer:prutser6.example.com
Lag Limit:30 seconds (not in use)
Shutdown Primary:TRUE
Auto-reinstate:TRUE
Observer Reconnect:10 seconds
Observer Override:
Configuration Status:
SUCCESS
What happens if you issue "failover to dogs;" at the DGMGRL prompt while connected to Dogs?
- A. The failover succeeds and Cats is left running.
- B. It results in an error indicating that a failover is not allowed.
- C. The failover succeeds, Sheep becomes the new target standby database, and Cats is automatically reinstated.
- D. The failover succeeds and Cats is automatically reinstated.
- E. The failover succeeds and Cats is terminated.
Correct Answer: E 🗳️
You have a Data Guard broker configuration consisting of:
1. A primary database
2. One local physical standby database
3. One far sync instance
4. A remote physical standby database
The broker configuration was created with the DGMGRL utility after creating all the databases and the far sync instance with command-line tools.
What is the correct way to add this configuration to Enterprise Manager Cloud Control assuming all the nodes have been discovered already as Enterprise Manager targets?
- A. Discover the primary database as a target in Enterprise Cloud Control. Then discover the existing Data Guard Broker configuration for the primary and all the other databases in the configuration will be discovered as targets and be ready to be monitored.
- B. Use the DGMGRL utility to register the configuration with the Enterprise manager Cloud Control agent on the primary database node. This will enable the discovery of all the other databases in the configuration as targets which will be ready to be monitored.
- C. Discover the primary as a target by refreshing the node on which it runs, and the other databases and instances in the Data Guard Broker configuration will be discovered as targets automatically and be ready to be monitored.
- D. Discover either of the physical standby databases as a target by refreshing the node on which they run, and the other databases and instances in the Data Guard Broker configuration will be discovered as targets automatically and be ready to be monitored.
- E. Delete the Data Guard Broker configuration using DGMGRL and then re-create it using Enterprise Manager Cloud Control to enable all the databases in the configuration to be discovered as targets and to be ready to be monitored.
Correct Answer: E 🗳️
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