PAS-C01 Operations and Maintenance Practice Question
A company runs SAP S/4HANA in a multi-AZ deployment with a primary and standby database. During a planned failover test, the database fails over but the SAP system becomes unresponsive. Investigation reveals that the SAP application servers cannot connect to the new primary database because the database VIP is not updated. What is the most likely cause?
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 HANA database VIP is not configured to move to the new primary instance during failover.
In a multi-AZ SAP HANA setup, the application servers connect to the database via a virtual IP address (VIP). During failover, the VIP must be moved to the new primary instance for connectivity. If the VIP is not migrated, the application servers will still try to reach the old primary (which is now standby), causing unresponsiveness. Option A is incorrect because the HANA instance number remains constant. Option B is incorrect because DNS records are not typically used for HANA failover; the VIP is used. Option C could cause issues if set to the physical hostname, but in this case the core problem is that the VIP did not move.
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 HANA instance number changed after failover.
Why it's wrong here
Instance number remains the same across failover.
- ✗
The DNS record for the HANA host still points to the old primary IP address.
Why it's wrong here
Typically, DNS is not used; VIP or hostname mapping is used.
- ✗
The HANA hostname in the SAP profile is set to the physical instance hostname instead of the VIP.
Why it's wrong here
The hostname should be the VIP or a logical name mapped to the VIP.
- ✓
The HANA database VIP is not configured to move to the new primary instance during failover.
Why this is correct
The VIP must be reassigned to the new primary for seamless connectivity.
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