What is a critical step before restoring the Runtime database?

Before restoring the Runtime database in the AVEVA Historian environment, it is vital to shut down and disable the Historian. This step ensures that there are no active connections or processes accessing the database, which could lead to inconsistencies or data corruption during the restoration process. By stopping the Historian, you create a stable and controlled environment, allowing the restoration to proceed without interference from ongoing operations.

Additionally, while backing up existing databases is an important practice, it is not specifically a step directly related to the restoration process itself; instead, it is a preventive measure taken to protect against data loss prior to making any changes. Similarly, enabling the SQL Server service or updating the Historian software, while relevant to the overall maintenance and operation of the system, are not critical preparatory steps tied specifically to the restoration of the Runtime database. Shutting down the Historian is crucial in ensuring the integrity and stability of the database being restored.