Percentage of blocked connections

15,912 0
Most well-balanced SQL Servers will have some degree of blocking. This metric attempts to measure the impact of lead blocking queries against other queries. Higher values indicate that many connections are being blocked, and queries should be tuned to reduce the amount of contention. Read more

Job overran

12,508 0
This metric tells you whether a specific SQL Agent job that runs at exactly the same time every day has overrun its expected duration. Read more

Current role of a database

8,171 1
This metric allows you to keep track of the role of a given database within your mirroring set up. The single value returned tells you whether the database is the principal or the mirror. Read more

Status of the witness

15,911 0
This metric returns a single value that tells you whether the witness is connected, disconnected or unknown. Knowing if it is offline can be as important as knowing if your mirrored databases are available. Read more

Long-running job

23,107 1
This metric returns the longest running instance of the named job in the last hour. By creating multiple custom metrics from this example – one for each job you're interested in – you can specify alert thresholds for each job individually. Read more

Database growth steps available

9,148 0
This metric measures the number of available autogrowth steps for a database, so you can see when they are reduced or increased because something else (e.g. another database) starts or stops taking up space, when storage is added, etc. Read more