Database instances created with VCD UI not showing metrics on DSM UI.
However, MySQL and Postgres instances created with DSM UI can show monitoring metrics.
VMware DSM 2.2.1
VMware Cloud Director
This is a known issue with dataservices created in non-default namespaces because of skipped metrics collection. VCD users create databases through Data Solution Operator via Consumption Operator. Each VCD organization has a representative namespace in DSM.
This issue would be fixed in VCF 9.0 and DSM 2.2.2.