Default TCP Port

 10,121 0
This metric checks whether your SQL Server installation is using the default TCP port, which is a known security risk. Read more

Low physical/external memory

 14,170 0
Determining if your operating system is causing memory issues within your SQL Server instance can be a challenge. One way around it is to use the sys.dm_os_ring_buffers to show when server memory is low. Read more

Indexes with excessive writes

 18,336 0
This metric measures the total number of indexes per database, where the number of writes exceed the number of reads. It provides a general indicator of possible performance factors affecting queries in your database. Read more

Low virtual memory

 11,914 0
Determining if your SQL Server instance is experiencing memory issues within the SQL Server Virtual Address Space (VAS) can be a challenge. One way around it is to use the sys.dm_os_ring_buffers. Read more

Database state

 8,926 0
This metric tells you whether a database is online, restoring, recovering, recovery pending, suspect, emergency, offline or does not exist on the server. Read more

OS Wait Time: CXPACKET

 8,076 0
CXPACKET waits may or may not be an issue for a system, but on an OLTP style system, they can indicate costly queries that are executing and requiring parallelized plans. Read more

Plan cache hit ratio

 18,970 0
A high plan cache hit ratio does not guarantee that all queries are using the cache as well as they might. Knowing the percentage of queries that are satisfied from cache helps you to better understand the plan cache hit ratio value. Read more

Plan cache reuse

 6,604 0
This metric shows the percentage of cached plans that are being used more than once. If a plan is cached but never reused, there may be an opportunity to tune your server to work more effectively. Read more

Percentage of database free space

 21,624 0
This metric measures the percentage of database free space - both reserved and unused - to help you manage space requirements more efficiently. For example, you might find this data helps you to correctly estimate file size, so you don't suffer from problems with automatic file growth. 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

    by Hugo Kornelis | 7,371 views |

    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

    by Redgate Monitor Team | 5,507 views |

    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

    by Eelco Drost | 5,156 views |

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

See all custom metrics