Author Michael Fal (@Mike_Fal),
Availability Windows, Linux, macOS



Want to see the source code for this command? Check out Test-DbaTempDbConfig on GitHub.
Want to see the Bill Of Health for this command? Check out Test-DbaTempDbConfig.


Evaluates tempdb against several rules to match best practices.


Evaluates tempdb against a set of rules to match best practices. The rules are:

  • TF 1118 enabled - Is Trace Flag 1118 enabled (See KB328551).
  • File Count - Does the count of data files in tempdb match the number of logical cores, up to 8?
  • File Growth - Are any files set to have percentage growth? Best practice is all files have an explicit growth value.
  • File Location - Is tempdb located on the C:? Best practice says to locate it elsewhere.
  • File MaxSize Set (optional) - Do any files have a max size value? Max size could cause tempdb problems if it isn't allowed to grow.
  • Data File Size Equal - Are the sizes of all the tempdb data files the same?

Other rules can be added at a future date.


    [-SqlInstance] <DbaInstanceParameter[]>
    [[-SqlCredential] <PSCredential>]




Example: 1
PS C:\> Test-DbaTempDbConfig -SqlInstance localhost

Checks tempdb on the localhost machine.

Example: 2
PS C:\> Test-DbaTempDbConfig -SqlInstance localhost | Select-Object *

Checks tempdb on the localhost machine. All rest results are shown.

Example: 3
PS C:\> Get-DbaRegServer -SqlInstance sqlserver2014a | Test-DbaTempDbConfig | Select-Object * | Out-GridView

Checks tempdb configuration for a group of servers from SQL Server Central Management Server (CMS). Output includes all columns. Send output to GridView.

Required Parameters


The target SQL Server instance or instances. SQL Server 2005 and higher are supported.

Required True
Pipeline true (ByValue)
Default Value

Optional Parameters


Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential). Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported. For MFA support, please use Connect-DbaInstance.

Required False
Pipeline false
Default Value

By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message. This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting. Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.

Required False
Pipeline false
Default Value False