PAS-C01 Technology Practice Question
A company is migrating its SAP ERP system running on Oracle to SAP HANA on AWS. The system has a database size of 2 TB. During migration planning, the team needs to minimize downtime. Which strategy should be used?
⚠ Common exam trap
It's easy for candidates to assume AWS DMS can handle any database migration, but it lacks support for SAP HANA as a target and cannot manage SAP-specific metadata and dependencies required for a successful 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
✓
Use SAP HANA System Replication to initially load data from the source SAP HANA (or migrate using SAP DMO with SUM) and then switch over.
SAP DMO (Database Migration Option) with SUM (Software Update Manager) is the recommended approach for migrating SAP systems to SAP HANA with minimal downtime. It performs a heterogeneous migration directly from Oracle to SAP HANA, using a combination of initial data load and subsequent delta replication to reduce the final cutover window. This method is specifically designed for SAP landscapes and supports near-zero downtime migration scenarios.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Take a full backup of Oracle, restore to SAP HANA, and then apply incremental logs.
Why it's wrong here
This approach is possible but requires more downtime than HSR.
- ✓
Use SAP HANA System Replication to initially load data from the source SAP HANA (or migrate using SAP DMO with SUM) and then switch over.
Why this is correct
SAP HANA System Replication allows near-zero downtime migration by replicating data while source is online.
- ✗
Use the AWS Database Migration Service (DMS) to perform an online migration from Oracle to SAP HANA.
Why it's wrong here
DMS does not support SAP HANA as a target for heterogeneous migrations.
- ✗
Perform an export/import using SAP tools while the source database is online.
Why it's wrong here
Export/import requires downtime or has high latency.
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