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Test-DbaMaxMemory
Post
NAME Test-DbaMaxMemory
SYNOPSIS
Calculates the recommended value for SQL Server 'Max Server Memory' configuration setting. Works on SQL Server
2000-2014.
SYNTAX
Test-DbaMaxMemory [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]> [[-SqlCredential]
<Pscredential>] [[-Credential] <Pscredential>] [-EnableException <Switch>] [<CommonParameters>]
DESCRIPTION
Inspired by Jonathan Kehayias's post about SQL Server Max memory (http://bit.ly/sqlmemcalc), this script displays
a SQL Server's: total memory, currently configured SQL max memory, and the calculated recommendation.
Jonathan notes that the formula used provides a *general recommendation* that doesn't account for everything that
may be going on in your specific environment.
PARAMETERS
-Credential [<Pscredential>]
Windows Credential with permission to log on to the server running the SQL instance
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-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[]>]
The target SQL Server instance or instances.
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: MaxMemory, Memory
Author: Chrissy LeMaire (@cl), netnerds.net
Website: https://dbatools.io
Copyright: (c) 2018 by dbatools, licensed under MIT
License: MIT https://opensource.org/licenses/MIT
-------------------------- EXAMPLE 1 --------------------------
PS C:\\>Test-DbaMaxMemory -SqlInstance sqlcluster,sqlserver2012
Calculate the 'Max Server Memory' for SQL Server instances sqlcluster and sqlserver2012
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>Get-DbaRegServer -SqlInstance sqlcluster | Test-DbaMaxMemory
Calculate the 'Max Server Memory' settings for all servers within the SQL Server Central Management Server
"sqlcluster"
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>Get-DbaRegServer -SqlInstance sqlcluster | Test-DbaMaxMemory | Where-Object { $_.MaxValue -gt $_.Total } |
Set-DbaMaxMemory
Find all servers in CMS that have Max SQL memory set to higher than the total memory of the server (think
2147483647) and set it to recommended value.
RELATED LINKS
https://dbatools.io/Test-DbaMaxMemory
SYNOPSIS
Calculates the recommended value for SQL Server 'Max Server Memory' configuration setting. Works on SQL Server
2000-2014.
SYNTAX
Test-DbaMaxMemory [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]> [[-SqlCredential]
<Pscredential>] [[-Credential] <Pscredential>] [-EnableException <Switch>] [<CommonParameters>]
DESCRIPTION
Inspired by Jonathan Kehayias's post about SQL Server Max memory (http://bit.ly/sqlmemcalc), this script displays
a SQL Server's: total memory, currently configured SQL max memory, and the calculated recommendation.
Jonathan notes that the formula used provides a *general recommendation* that doesn't account for everything that
may be going on in your specific environment.
PARAMETERS
-Credential [<Pscredential>]
Windows Credential with permission to log on to the server running the SQL instance
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-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[]>]
The target SQL Server instance or instances.
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: MaxMemory, Memory
Author: Chrissy LeMaire (@cl), netnerds.net
Website: https://dbatools.io
Copyright: (c) 2018 by dbatools, licensed under MIT
License: MIT https://opensource.org/licenses/MIT
-------------------------- EXAMPLE 1 --------------------------
PS C:\\>Test-DbaMaxMemory -SqlInstance sqlcluster,sqlserver2012
Calculate the 'Max Server Memory' for SQL Server instances sqlcluster and sqlserver2012
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>Get-DbaRegServer -SqlInstance sqlcluster | Test-DbaMaxMemory
Calculate the 'Max Server Memory' settings for all servers within the SQL Server Central Management Server
"sqlcluster"
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>Get-DbaRegServer -SqlInstance sqlcluster | Test-DbaMaxMemory | Where-Object { $_.MaxValue -gt $_.Total } |
Set-DbaMaxMemory
Find all servers in CMS that have Max SQL memory set to higher than the total memory of the server (think
2147483647) and set it to recommended value.
RELATED LINKS
https://dbatools.io/Test-DbaMaxMemory