Hi guys, I'm having a big problem with the performance. I got, for example, a query that is running since more than five hours ago. I've calculated that in the last minute it was written only 7mb (it's an insert). This query last month would have completed in thirty minutes. I don't know what happening.
Just I would like to ask you some advice in order to check the performance and eventual issues...which check should I run first?
Thanks as always