In the case of a hardware failure affecting the persistence area, what tasks must be performed to recover the SAP HANA database?

In the event of a hardware failure that impacts the persistence area of an SAP HANA database, it is essential to first recover the system database before addressing the tenant databases. The system database holds critical information that governs the entire environment in which the tenant databases operate. This includes metadata, system configuration, and certain essential settings that allow the overall database environment to function correctly.

Recovering the system database first is crucial because it establishes the foundation required for the subsequent recovery of the tenant databases. Without a properly restored system database, the tenant databases may not be correctly recognized or may not function as intended, which can lead to further complications and potential data inconsistency.

Moreover, SAP HANA’s architecture relies on this hierarchical recovery sequence, ensuring that all dependent entities are restored in the correct order, preserving the integrity of the entire database system. Therefore, initiating recovery with the system database is not only a logical approach but also a best practice for effective database recovery in a HANA environment.