For an APS 1.2 application, General and Instances screens load very slowly, up to several minutes, sometimes leading to a Service Unavailable error.
At the same time, there is a
postmaster PostgreSQL process eating close to 100% CPU usage on OA MN.
The application has a big amount of versions imported to OA and thousands of instances.
Slow database queries for APS applications with big amount of versions and instances. The issue is recognized under internal ID APS-34611.
Remove the old versions of the application that contain 0 instances.