1Z0-997-26 High Availability And Disaster Recovery Practice Question
You are configuring a Data Guard association between two Oracle Base Database Systems in different OCI regions. The primary database encounters an unplanned outage, and you perform a manual failover. What action must you take afterward if you wish to restore the original architecture with the old primary as the new standby?
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
✓
Recreate or reinstate the former primary database (using Flashback Database or backup restoration) to convert it into a valid standby.
After a failover, the old primary database is no longer in sync and cannot act as a standard standby without being reinstated or rebuilt (e.g., using Flashback Database or re-creating the standby).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run a simple 'SWITCHOVER' command to reverse roles without any data synchronization checks.
Why it's wrong here
A switchover requires both databases to be synchronized and in the correct roles; after a failover, a direct switchover will fail because timelines have diverged.
- ✗
Modify the listener.ora file manually via SSH and restart the clusterware.
Why it's wrong here
Manual file edits are unnecessary as OCI Database management tools handle Data Guard configuration states.
- ✗
Delete the standby database and provision a brand-new VCN in the primary region.
Why it's wrong here
You do not need to delete the VCN; re-instating or re-creating the database instance is sufficient.
- ✓
Recreate or reinstate the former primary database (using Flashback Database or backup restoration) to convert it into a valid standby.
Why this is correct
A failover breaks the replication chain and diverges timelines; the old primary must be reinstated or rebuilt to serve as a standby.
Visual reference
About these practice questions
Courseiva writes every 1Z0-997-26 question from scratch — 344 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.