< Back

Clear-DbaLatchStatistics

Mon Jan 13, 2020 9:18 am

NAME Clear-DbaLatchStatistics



SYNOPSIS

Clears Latch Statistics





SYNTAX

Clear-DbaLatchStatistics [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>

[[-SqlCredential] <Pscredential>] [-EnableException <Switch>] [<CommonParameters>]





DESCRIPTION

Reset the aggregated statistics - basically just executes DBCC SQLPERF (N'sys.dm_os_latch_stats', CLEAR)





PARAMETERS

-EnableException [<Switch>]

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

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-SqlCredential [<Pscredential>]

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

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



-SqlInstance [<Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>]

Allows you to specify a comma separated list of servers to query.



Required? false

Position? named

Default value

Accept pipeline input? False

Accept wildcard characters? false



<CommonParameters>

This cmdlet supports the common parameters: Verbose, Debug,

ErrorAction, ErrorVariable, WarningAction, WarningVariable,

OutBuffer, PipelineVariable, and OutVariable. For more information, see

about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).



INPUTS



OUTPUTS



NOTES





Tags: LatchStatistic, Waits

Author: Patrick Flynn (@sqllensman)



Website: https://dbatools.io

Copyright: (c) 2018 by dbatools, licensed under MIT

License: MIT https://opensource.org/licenses/MIT



-------------------------- EXAMPLE 1 --------------------------



PS C:\\>Clear-DbaLatchStatistics -SqlInstance sql2008, sqlserver2012



After confirmation, clears latch statistics on servers sql2008 and sqlserver2012

-------------------------- EXAMPLE 2 --------------------------



PS C:\\>Clear-DbaLatchStatistics -SqlInstance sql2008, sqlserver2012 -Confirm:$false



Clears latch statistics on servers sql2008 and sqlserver2012, without prompting

-------------------------- EXAMPLE 3 --------------------------



PS C:\\>'sql2008','sqlserver2012' | Clear-DbaLatchStatistics



After confirmation, clears latch statistics on servers sql2008 and sqlserver2012

-------------------------- EXAMPLE 4 --------------------------



PS C:\\>$cred = Get-Credential sqladmin



PS C:\\> Clear-DbaLatchStatistics -SqlInstance sql2008 -SqlCredential $cred



Connects using sqladmin credential and clears latch statistics on servers sql2008 and sqlserver2012



RELATED LINKS

https://dbatools.io/Clear-DbaLatchStatistics