On Sun, 2024-06-23 at 10:08 +0300, Doron Tsur wrote: > We are running PG 12 on AWS RDS. I want to run an upgrade process for the DB. > The org I work for attempted to upgrade before but failed (12->15). The upgrade > resulted in unexplained slowness, and performance issues were only resolved via > a downgrade. We cannot provide help for Amazon's upgrade process. If you still have the slow database, you should analyze what exactly was slow and why. Yours, Laurenz Albe