Processes in a runnable state (worker query)

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9,224 1
This metric measures the load of running processes within SQL Server. It doesn’t show any specific problems, but can act as a measure of the pressure being put on your SQL Server instance. Read more

Out of memory errors

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Rating: 5.0/5 (2 votes cast)
12,812 0 , ,
The number of out of memory errors that have occurred within a rolling five minute window. If you just want to keep an eye out for any memory errors, you can watch the ring buffers for the Out of Memory error alert when it gets registered there. Read more

Buffer pressure

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16,828 1 , ,
Trying to determine if you have pressure in your buffer allocations can be difficult. Buffer cache hit ratio is an almost useless metric, so you need a mechanism to let you know if there’s a problem in that area. Read more

SQL Server: buffer manager: database pages

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Rating: 5.0/5 (1 vote cast)
16,323 0
This metric tells you how many database pages are currently being occupied in the data cache. The higher the buffer manager: database pages is, the less room there is for SQL Server to cache more data pages. Read more