We can see that two targets are showing metric collection error message.
Right click on the target and go to monitoring configuration
Test the connection
Connection is successful
Verify other properties are set correctly. If yes click next
Review info and submit.
Changes are saved
Upload the agent and check the status again
Database metric error is cleared but we still see listener under error
Right click and select monitoring configuration
Verify the details
Status is showing under progress
In our case status is still not changing. Let’s click on the highlighted icon
It says target is marked as broken
Further troubleshooting steps for this listener metric error are listed in this post