We see some of the Database showing Not Monitored under the view SQL Server 2016, many of these Databases without a state do have a state for the DB Filegroup and/or DB Log File and some databases that do have a state, have DB Filegroups and/or DB Log Files with a Not Monitored state.
We also tried palcing the Database in Maintinance Mode but still issue not resolved.
Note:-We are using Service SID method for monitoring SQL servers.