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Set-DbaMaxMemory
Post
NAME Set-DbaMaxMemory
SYNOPSIS
Sets SQL Server 'Max Server Memory' configuration setting to a new value then displays information this setting.
SYNTAX
Set-DbaMaxMemory [[-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>] [[-SqlCredential]
<Pscredential>] [[-Max] <Int>] [[-InputObject] <System.Management.Automation.PSObject[]>] [-EnableException
<Switch>] [<CommonParameters>]
DESCRIPTION
Sets SQL Server max memory then displays information relating to SQL Server Max Memory configuration settings.
Inspired by Jonathan Kehayias's post about SQL Server Max memory (http://bit.ly/sqlmemcalc), this uses a formula to
determine the default optimum RAM to use, then sets the SQL max value to that number.
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
-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
-InputObject [<System.Management.Automation.PSObject[]>]
A InputObject returned by Test-DbaMaxMemory
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-Max [<Int>]
Specifies the max megabytes (MB)
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:\\>Set-DbaMaxMemory sqlserver1
Set max memory to the recommended on just one server named "sqlserver1"
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>Set-DbaMaxMemory -SqlInstance sqlserver1 -Max 2048
Explicitly set max memory to 2048 on just one server, "sqlserver1"
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>Get-DbaRegServer -SqlInstance sqlserver | Test-DbaMaxMemory | Where-Object { $_.MaxValue -gt $_.Total } |
Set-DbaMaxMemory
Find all servers in SQL Server Central Management Server that have Max SQL memory set to higher than the total
memory
of the server (think 2147483647), then pipe those to Set-DbaMaxMemory and use the default recommendation.
RELATED LINKS
https://dbatools.io/Set-DbaMaxMemory
SYNOPSIS
Sets SQL Server 'Max Server Memory' configuration setting to a new value then displays information this setting.
SYNTAX
Set-DbaMaxMemory [[-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>] [[-SqlCredential]
<Pscredential>] [[-Max] <Int>] [[-InputObject] <System.Management.Automation.PSObject[]>] [-EnableException
<Switch>] [<CommonParameters>]
DESCRIPTION
Sets SQL Server max memory then displays information relating to SQL Server Max Memory configuration settings.
Inspired by Jonathan Kehayias's post about SQL Server Max memory (http://bit.ly/sqlmemcalc), this uses a formula to
determine the default optimum RAM to use, then sets the SQL max value to that number.
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
-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
-InputObject [<System.Management.Automation.PSObject[]>]
A InputObject returned by Test-DbaMaxMemory
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-Max [<Int>]
Specifies the max megabytes (MB)
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:\\>Set-DbaMaxMemory sqlserver1
Set max memory to the recommended on just one server named "sqlserver1"
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>Set-DbaMaxMemory -SqlInstance sqlserver1 -Max 2048
Explicitly set max memory to 2048 on just one server, "sqlserver1"
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>Get-DbaRegServer -SqlInstance sqlserver | Test-DbaMaxMemory | Where-Object { $_.MaxValue -gt $_.Total } |
Set-DbaMaxMemory
Find all servers in SQL Server Central Management Server that have Max SQL memory set to higher than the total
memory
of the server (think 2147483647), then pipe those to Set-DbaMaxMemory and use the default recommendation.
RELATED LINKS
https://dbatools.io/Set-DbaMaxMemory