SQL Server instance restarted

 7,638 0
This metric and alert will notify you when a SQL Server instance is restarted for any reason. The value returned by the metric is not useful on its own, and is only used by the alert to detect changes. When the server has not been restarted it will report 0 , and when the server […] Read more

Default user service account

 19,793 0
This metric checks whether SQL Server services are running under any of the default accounts, such as localsystem. Using a default account for SQL Server services can be a security risk. Read more

Percentage of used log space

 48,781 0
This metric measures the percentage of free space for transaction log files (LDF files). It will also alert you if the amount of free space drops below the specified thresholds. Read more

Large transaction log files

 21,396 0
This metric measures the number of transaction log files that are greater than 10 GB. The associated alert is raised when the number of files exceeds the specified threshold. Read more

Untrusted check constraints

 15,795 0
This metric returns the number of check constraints that have their is_not_trusted flag set to 1 in the sys.check_constraints table. This can point to a data integrity issue which should be investigated. Read more

Untrusted foreign keys

 14,971 0
This metric returns the number of foreign keys that have their is_not_trusted flag set to 1 in the sys.foreign_keys table. An untrusted foreign key may threaten a database's referential and data integrity. Read more

Percentage of blocked connections

 17,785 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

What are custom metrics?

The Redgate 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 Redgate 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 Redgate 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.

See the Getting Started guides

What is Redgate Monitor?

Redgate Monitor is a SQL Server performance monitoring tool that gives you real-time and historical SQL Server performance data with alerts and diagnostics.

With its embedded expertise from SQL Server experts and MVPs, it gives you the information and advice you need to find and fix issues before users are even aware.

Find out more about Redgate Monitor

Featured custom metrics

  • Total database file size

    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

  • Number of active backups and restores

    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

  • Full backup to odd path

    This custom metric queries the MSDB database to search for multiple paths for a full backup Read more

See all custom metrics