PAS-C01 SAP HANA System Replication (HSR) Practice Question
A company is migrating its SAP ECC system to SAP S/4HANA on AWS. The current database is running on Oracle. They want to minimize downtime during the migration. Which TWO services or features should they consider to achieve a near-zero downtime migration? (Select TWO.)
⚠ Common exam trap
A common mistake is thinking that SAP HANA System Replication can be used for migrating from Oracle to HANA. HSR only works between HANA databases, not for cross-platform replication. Also, EC2 Hibernate cannot facilitate database 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 AWS Snowball to transfer the initial Oracle data dump to AWS.
To achieve near-zero downtime migration from Oracle to SAP HANA on AWS, two key services are recommended: AWS Snowball for the initial bulk data transfer to AWS, and AWS Database Migration Service (DMS) for ongoing replication of changes from Oracle to HANA. SAP HANA System Replication (HSR) is used for replication between two HANA systems, not for heterogeneous migration from Oracle. EC2 Hibernate and EBS Snapshots are not designed for live database migration across different engines.
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 Snowball to transfer the initial Oracle data dump to AWS.
Why this is correct
Snowball is for offline data transfer, not for near-zero downtime.
- ✗
Use SAP HANA System Replication (HSR) for the final synchronization.
Why it's wrong here
HSR can be used to keep the HANA target in sync during the cutover.
- ✗
Use EC2 Hibernate to pause the source instance during cutover.
Why it's wrong here
EC2 Hibernate is used to pause and resume EC2 instances, but it does not perform database migration or replication between different database engines like Oracle to SAP HANA. It cannot achieve near-zero downtime for a heterogeneous database migration.
- ✓
Use AWS Database Migration Service (DMS) for ongoing replication from Oracle to HANA.
Why this is correct
DMS supports minimal downtime migration by replicating changes continuously.
- ✗
Use Amazon EBS Snapshots for point-in-time recovery and replication.
Why it's wrong here
Snapshots are for backup, not for continuous replication.
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