Database autogrowth

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Rating: 5.0/5 (4 votes cast)
4
16,546 0
This metric measures the number of database autogrowth events (data file or log file) in the last hour. Read more

Percentage of blocked connections

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Rating: 5.0/5 (3 votes cast)
3
10,313 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

Issues found by sp_Blitz

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Rating: 5.0/5 (4 votes cast)
4
16,820 0
This metric looks for configuration, security, health and performance problems, and reports back with a list of issues for you to look into. Read more

Job overran

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Rating: 5.0/5 (1 vote cast)
1
7,692 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

Data not yet sent to the mirror

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Rating: 5.0/5 (1 vote cast)
1
5,390 0
This metric tracks the amount of data waiting to be sent from the principal database to the mirror. This is known as the send queue. Read more

Current status of mirroring

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Rating: 5.0/5 (1 vote cast)
1
10,659 0
Mirroring systems can go offline. This metric returns the current state of the mirroring system so you’ll know from a single value what the current status of your mirroring environment is. Read more

Current role of a database

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Rating: 0.0/5 (0 votes cast)
0
4,144 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

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Rating: 0.0/5 (0 votes cast)
0
8,040 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

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Rating: 3.8/5 (8 votes cast)
8
13,756 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

Number of queries running

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Rating: 4.2/5 (5 votes cast)
5
5,450 0
This metric counts how many queries are running, and alerts you if the value goes above a defined threshold. Read more