Percentage of blocked connections

 15,882 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

Job overran

 12,475 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

Current role of a database

 8,133 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

 15,828 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

 23,043 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

Database growth steps available

 9,100 0
This metric measures the number of available autogrowth steps for a database, so you can see when they are reduced or increased because something else (e.g. another database) starts or stops taking up space, when storage is added, etc. 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 | 8,258 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 | 6,312 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 | 5,723 views |

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

See all custom metrics