What specific information is essential about the tenant database before recovery?

The essential information about the tenant database before recovery is that it must be stopped. This is crucial because performing recovery operations on a running database can lead to inconsistencies and potential data corruption. Stopping the tenant database ensures that no transactions are occurring during the recovery process, allowing for a consistent point in time to restore from. This practice is fundamental to maintaining data integrity and ensuring that the recovery process can be completed without interference.

While having an operational tenant database, periodic backups, or running diagnostics are important aspects of database management, they do not specifically address the requirements for recovery. A database needs to be in a stable state before initiating recovery actions, which is why stopping it is the necessary step.