Multiple metrics are missing from the SQL Server instance overview and Executive Summary Report:
The following SQL query can be used to verify the availability of the performance counters:
SELECT COUNT(*) FROM sys.dm_os_performance_counters;
If the return value is 0 rows, it means that the performance counters have been either disabled or not working as expected. Additional information can be found on the following article from Microsoft: sys.dm_os_performance_counters (Transact-SQL).
The following collections may be affected by the missing SQL Server Performance Counters (empty "sys.dm_os_performance_counters" table):
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