Monitor TempDB Contention

 6,672 0
Measures the total duration of latch waits on the tempdb database, in a one-minute time interval. First, create and start for the following Extended Events session on the monitored SQL Server instance: [crayon-6a8ea938ad369228396642/] The goal is to get the total duration of latch waits, in the last minute, so this session collects all the event […] Read more

Monitoring Changes in Permissions, Users, Roles and Logins

 9,927 0
Reports the number of changes to logins, users, roles in the past 10 minutes. It measures every change but doesn’t tell you if this is a drift from what it should be, since it might only be a permission being temporarily created and then revoked. First, create the following function in the database on the […] Read more

Detect Suspicious Errors Typical of a SQL Injection Attack

 11,081 0
Detects errors characteristic of a possible SQL Injection attack, or other attempts to gain illicit access to a database server. Returns the number of errors detected in the last 20 minutes. First, create an Extended Events session on the monitored SQL Server instance: [crayon-6a8ea938ad70f749976937/] Start the event session, like this: [crayon-6a8ea938ad713122436802/] 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