DB02 SAP on SQL data is missing

Dear team,

We are running SAP on SQL with distributed enviroment. Db + Ci + APP1 + APP2 . Our Sql is clustered (DB and CI) and so is sap HA (CI and DB - ERS)

when executed DB02, in alert monitor we are getting data grayed out for performance tab. (please find attached image) can anybody please help.

Thanks in Advance.

Regards,