PCDE Migrate data solutions Practice Question
An organization is performing a DMS continuous migration from PostgreSQL to Cloud SQL. The migration job is in the CDC phase. During a planned maintenance window, the source database is restarted. After restart, the DMS job continues to replicate but reports a lag. What is the impact of the restart on the migration?
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 migration job will resume automatically from where it stopped.
Once the replication slot is established, a restart does not require a full re-sync. The slot retains the position, and DMS will resume from the last committed transaction. Autovacuum may affect performance but does not stop replication.
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 migration job will switch to one-time migration mode.
Why it's wrong here
DMS does not automatically switch modes.
- ✓
The migration job will resume automatically from where it stopped.
Why this is correct
The logical replication slot maintains the LSN position; after restart, DMS continues from that point.
- ✗
The migration job will fail and require a new full dump.
Why it's wrong here
Replication slots persist across restarts; no full dump is needed.
- ✗
The migration job will continue but with increased latency until all WAL is replayed.
Why it's wrong here
Latency may increase temporarily but not due to restart; DMS picks up from the slot.
Go deeper
Related to this question
About these practice questions
One of 1,446 original PCDE practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCDE practice question is part of Courseiva's free Google Cloud 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 PCDE exam.