PAS-C01 Migration Practice Question
A company is migrating its SAP ERP system (with Oracle database) to AWS using the SAP-certified approach. The current on-premises environment uses Oracle RAC for high availability. The company wants to reduce licensing costs and simplify the architecture on AWS. Which of the following is the MOST efficient migration strategy?
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
✓
Use AWS DMS to migrate the Oracle database to Amazon RDS for Oracle with a single instance. Use AWS MGN for the application servers.
AWS does not support Oracle RAC in a fully supported manner for SAP. The best practice is to migrate to Amazon RDS for Oracle (single instance) or use a single Oracle instance on EC2. Using AWS DMS with ongoing replication minimizes downtime. Option C is correct because it uses DMS to migrate the Oracle database to Amazon RDS for Oracle single instance, which reduces licensing costs, and AWS MGN for the application servers, simplifying the architecture. Option A is incorrect because RDS for Oracle does not support Oracle RAC. Option B uses AWS DataSync, which is for file transfer, not database replication. Option D keeps Oracle RAC, which is costly and not simplified.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use AWS DMS to migrate the database to Amazon RDS for Oracle, but then configure RDS for Oracle RAC.
Why it's wrong here
RDS for Oracle does not support RAC configuration.
- ✗
Use AWS DataSync to copy the Oracle database files to EBS volumes, then restore on an EC2 instance.
Why it's wrong here
DataSync is not suitable for database replication; this would cause significant downtime and complexity.
- ✓
Use AWS DMS to migrate the Oracle database to Amazon RDS for Oracle with a single instance. Use AWS MGN for the application servers.
Why this is correct
This reduces licensing costs and simplifies the architecture. DMS supports Oracle as source and target RDS Oracle.
- ✗
Lift-and-shift the Oracle RAC cluster to EC2 using AWS Application Migration Service.
Why it's wrong here
Oracle RAC is not supported on AWS in a fully supported manner for SAP; also licensing costs remain high.
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