Metrics don't run

EM 13.5

Consider a database, with a lot of Metrics, all seems OK. Most Metrics work …

… but not all. So I check if the thresholds are set all right, but also after that some Metrics just don't display any data. For a long list of databases, it's consistently the same Metrics which are not working (and the same which are working all right).

The ones that don't work for me, are:

• invalid object count
• failed login count
• SGA usage
• CPU count
• CPU wait time (ms)
• Used Space (GB)

For each of those, no values are displayed, no maximum or minimum is displayed, no graph is displayed, no matter what time delta (last day, last week, last 30 days or custom).