1Z0-997-26 High Availability And Disaster Recovery Practice Question
An enterprise application uses an Oracle Exadata Database Service on Dedicated Infrastructure with Maximum Availability Architecture (MAA). A catastrophic regional disaster occurs, and you must initiate a failover to the standby region. What is the expected behavior of Active Data Guard during this process?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The standby database converts to the primary role, opens for read/write operations, and stops applying redo from the old primary.
During a failover, the standby database is transitioned to become the primary role, opening for read/write traffic while breaking the replication relationship with the former primary.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The standby database converts to the primary role, opens for read/write operations, and stops applying redo from the old primary.
Why this is correct
A failover promotes the standby to primary, making it writable and terminating the previous primary link.
- ✗
The standby database automatically initiates a flashback database operation to sync with object storage backups before opening.
Why it's wrong here
Flashback database can be used post-failover to re-create a standby, but it is not the primary mechanism of the failover execution.
- ✗
Active Data Guard remains in read-only mode until a manual database restore command is issued.
Why it's wrong here
Failover removes the read-only constraint and opens the database for read-write.
- ✗
The database becomes inaccessible until Full Stack Disaster Recovery automatically reprovisions the storage cells.
Why it's wrong here
Data Guard operates independently of Full Stack DR orchestration for the core database failover execution.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Oracle exam blueprint
This 1Z0-997-26 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-997-26 exam.