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Question 106 of 1,733

Design of SAP Workloads on AWS →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is to create a snapshot of the EBS data volume immediately before applying the Oracle patches. This approach minimizes downtime because it captures a crash-consistent, point-in-time state of the Oracle database while it is shut down, providing a reliable rollback target. If the patching fails, the DBA can restore the volume from this fresh snapshot in minutes, avoiding the loss of an entire day’s transactions that would occur with the older midnight snapshot. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of EBS snapshot mechanics for Oracle patching and the critical difference between crash-consistent and application-consistent backups. A common trap is assuming the daily snapshot is sufficient, but that would cause significant data loss and extended downtime. Remember the memory tip: “Patch now, snapshot first” — always take a fresh snapshot just before any maintenance that requires a database shutdown to ensure a quick, zero-data-loss rollback.

PAS-C01 Design of SAP Workloads on AWS Practice Question

This PAS-C01 practice question tests your understanding of design of sap workloads on aws. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A company runs SAP ERP Central Component (ECC) on AWS with an Oracle database. The system is deployed on a single EC2 instance with EBS volumes. The company has scheduled a maintenance window for applying Oracle patches. The database administrator (DBA) will apply the patches during the maintenance window, which requires the database to be shut down. The DBA wants to minimize downtime and ensure that if the patching fails, the system can be rolled back quickly. The current setup includes daily EBS snapshots of the data volume, but these are taken at midnight. What should the DBA do to minimize downtime and ensure a quick rollback?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.

Question 1hardmultiple choice

Read the full NAT/PAT explanation →

A
Create a snapshot of the EBS data volume immediately before applying the patches. If the patching fails, restore the volume from the snapshot.
A snapshot provides a quick rollback point without additional downtime.
B
Use AWS Database Migration Service (DMS) to create a replica of the database before patching. If patching fails, redirect traffic to the replica.
Why wrong: DMS is for migration, not for quick rollback of a running database.
C
Create an AMI of the entire EC2 instance before the maintenance window. If patching fails, launch a new instance from the AMI.
Why wrong: Creating an AMI takes longer and may not be needed for just the data volume.
D
Stop the EC2 instance, create a snapshot of the data volume, then apply the patches. If patching fails, restore from the snapshot.
Why wrong: Stopping the instance adds unnecessary downtime.

Full breakdown with real-world context →

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

✓

Create a snapshot of the EBS data volume immediately before applying the patches. If the patching fails, restore the volume from the snapshot.

Option A is correct because creating a snapshot of the EBS data volume immediately before applying the patches captures a point-in-time, crash-consistent state of the Oracle database. Since the database will be shut down during the maintenance window, this snapshot provides a reliable restore point. If patching fails, the DBA can quickly restore the volume from this snapshot, minimizing downtime by avoiding the need to restore from the older midnight snapshot, which would lose an entire day's worth of transactions.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
Create a snapshot of the EBS data volume immediately before applying the patches. If the patching fails, restore the volume from the snapshot.
Why this is correct
A snapshot provides a quick rollback point without additional downtime.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS Database Migration Service (DMS) to create a replica of the database before patching. If patching fails, redirect traffic to the replica.
Why it's wrong here
DMS is for migration, not for quick rollback of a running database.
✗
Create an AMI of the entire EC2 instance before the maintenance window. If patching fails, launch a new instance from the AMI.
Why it's wrong here
Creating an AMI takes longer and may not be needed for just the data volume.
✗
Stop the EC2 instance, create a snapshot of the data volume, then apply the patches. If patching fails, restore from the snapshot.
Why it's wrong here
Stopping the instance adds unnecessary downtime.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may overthink the solution and choose a more complex option like DMS or AMI, not realizing that a simple EBS snapshot taken immediately before patching provides the fastest and most cost-effective rollback for a single-instance SAP ECC with Oracle, as it avoids the overhead of instance recreation or replication setup.

Detailed technical explanation

How to think about this question

EBS snapshots are incremental and capture only the blocks that have changed since the last snapshot, but the first snapshot after a volume is created is a full copy. When creating a snapshot for rollback, it is critical to ensure the database is in a consistent state (e.g., by shutting it down or using ALTER DATABASE BEGIN BACKUP) to avoid a crash-consistent snapshot that may require recovery. In real-world scenarios, the DBA should also consider using EBS multi-attach or a separate volume for redo logs to further isolate recovery points, but for a single-volume setup, a pre-patch snapshot is the fastest rollback method.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this PAS-C01 question test?

Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Create a snapshot of the EBS data volume immediately before applying the patches. If the patching fails, restore the volume from the snapshot. — Option A is correct because creating a snapshot of the EBS data volume immediately before applying the patches captures a point-in-time, crash-consistent state of the Oracle database. Since the database will be shut down during the maintenance window, this snapshot provides a reliable restore point. If patching fails, the DBA can quickly restore the volume from this snapshot, minimizing downtime by avoiding the need to restore from the older midnight snapshot, which would lose an entire day's worth of transactions.

What should I do if I get this PAS-C01 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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