Oracle EM 13.3 PG was released April 28th 2019. This new (plugin only) release contains 8 new plugins including a new version of the DB plugin.
After installing these plugins we noticed several changes in behavior for the DB targets.
2. Top Activity and Emergency Performance pages were completely removed from the Performance menu
At the beginning was weird to use just ASH analytics instead of Top Activity page but all the key information is there.
There’s an option to revert 3 JET pages back to Flash if needed. This can be done through emctl commands. All this information can be found on MOS 2422790.1
Also, if you really need the old Top Activity page you can still access it using a direct URL link. For this follow MOS 2528627.1 for more details.