Monitoring Tool – Database Administrators Stack Exchange

Welcome aboard!!
If this is for MS SQL Server…then…there are lot of monitoring tools in the market, offering different functionalities and serving different purposes. Some of them like Datadog, Solarwinds DPA, Idera and more (do not go with order mentioned, it’s random). It all depends how much you want to spend and what you want that fits your budget. If budget constraints – SQL Server has amazing in built features like Query Store, perfmon counters (for baseline data), build custom scripts (to capture deadlocks, tempdb usage), use DMV’s (Glenn Berry has wonderful list), SQL Sentry Plan Explorer (free!!), sp_whoisactive and so on. Finally IT DEPENDS!!!