An Oracle Enterprise Management Agent 12c that has to manage hundreds of objects needs extra tweaking. If not, it will not start, or it will die soon, leaving you with an unmanaged infrastructure.
The customer runs over 200 databases on 1 host. Intel bases host with 384GB RAM and over 4TB of storage. Linux OS. Works as a charm.
Enterprise Manager 12c Release 4, Agent Version 22.214.171.124.0.
The databases should (more...)