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
This metric measures the latency of a mirroring stream. This is useful for checking the historical status of mirroring and also alerting when mirroring is delayed. Read more
What are custom metrics?
The SQL Monitor custom metric feature lets you run T-SQL queries against your SQL Servers to collect specific data. You can analyze and receive alerts about your custom data just like everything else SQL Monitor collects.
But what if you don’t want to write your own queries? No problem. Redgate has brought together a range of quality custom metrics for you to use in SQL Monitor, which are all are free, tried and tested. You can install straight away, and use the resources on this site to help you write your own.
This custom metric measures the total database file size (data files and log file combined). An increase in this metric signals that a database was grown. When not done by the DBA, this is an autogrow. Excessive autogrow events should be prevented as this can result to file fragmentation. Try to manually grow files before […] Read more
This metric will display the total number of active backups and restores on a server. This can be used to correlate with other metrics to explain why disk IO and CPU usage could have changed. Read more