PAS-C01 Operations and Maintenance Practice Question
An SAP system administrator notices that the SAP Central Services (ASCS) instance on an EC2 instance has failed. The instance is still running, but the ASCS service is unresponsive. What is the MOST efficient way to restore the ASCS service without affecting the SAP application?
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
✓
Restart the ASCS service using SAP MMC or sapcontrol.
The most efficient way to restore the ASCS service without affecting the SAP application is to restart the ASCS service using SAP MMC or sapcontrol (Option D). This action is quick and minimally disruptive, as it only restarts the service without impacting the underlying EC2 instance or requiring failover procedures. - Option A (fail over to secondary node) is less efficient because it requires a properly configured cluster environment and may take longer to orchestrate, and it may not be necessary if the primary node's service can be restarted. - Option B (reboot the EC2 instance) is inefficient and disruptive because it restarts the entire instance, affecting all services and potentially causing downtime for the SAP application. - Option C (restore from AMI backup) is the most time-consuming and resource-intensive approach, and is only appropriate if the instance or service is corrupt and cannot be recovered by restarting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Manually fail over the ASCS to the secondary node in the cluster.
Why it's wrong here
Manually failing over to the secondary node requires a properly configured cluster and is generally slower than restarting the service. It may be unnecessary if the primary service can be restored.
- ✗
Reboot the EC2 instance hosting the ASCS.
Why it's wrong here
Rebooting the EC2 instance restarts all services and can cause unnecessary downtime. It is not the most efficient method.
- ✗
Restore the ASCS instance from the most recent AMI backup.
Why it's wrong here
Restoring from AMI backup is a lengthy process and should be a last resort when the service cannot be restarted.
- ✓
Restart the ASCS service using SAP MMC or sapcontrol.
Why this is correct
Restarting the ASCS service using SAP MMC or sapcontrol directly targets the failed service, is quick, and minimizes impact on the SAP application.
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