Which metrics should a product owner look at? I am the product owner for an on premise, off-the-shelf, application, which relies on a SQL Server DB.

My company outsources DB administration to a bunch of very capable folks, and tickets are issued when something is wrong. (So that I can, for example, escalate with the editor's technical teams).

However, improvement and evolution projects are my responsability, but I have a hard time figuring out if one is in order or not.

As far as performance goes, I do not follow any indicators. Without micromanaging, is there any high-level KPIs that should be monitored by a product owner?
I cannot list everything you need to monitor for a database. The biggest factor is 'It Depends'. I am going to list a few articles that might give you a starting point and from there you can adjust.


SQL Server Monitoring Tips--I know you are not looking for how to monitor but what to monitor. If you go thru these categories and cover all you will cover most of the KPI.
Key metrics for SQL Server monitoring by Paul Gottschling
Server Performance and Activity Monitoring