The plugin is licensed and purchased on a per-instance basis - how do I know how many licenses I need?
The PostgreSQL plugin for Oracle Enterprise Manager is licensed per instance, where an instance refers to a single physical or virtual server running PostgreSQL—not per individual database within that server.
• If you have a standalone PostgreSQL server, that counts as one instance.
• If you have a High Availability (HA) cluster with primary and standby nodes, that counts as two instances because each server requires monitoring.
• If you run multiple PostgreSQL databases on a single server, it still counts as one instance since the license applies to the server itself, not the number of databases
Examples
Setup # of Instances (Licenses Needed)
1 PostgreSQL server with 3 databases = 1 instance
HA Cluster (Primary + Standby) = 2 instances
5 PostgreSQL servers, each with 2 databases = 5 instances
TL;DR If you are running PostgreSQL on a single physical or virtual server, that’s one instance, regardless of how many databases are on it. If you have multiple servers or an HA setup with a primary and standby, each server counts as a separate instance requiring a license.”