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SharePoint 2013

Applies to: SharePoint Foundation 2013, SharePoint Server 2013 Enterprise

Topic Last Modified: 2015-03-09

Detaches a content database from its currently associated Web application.

Dismount-SPContentDatabase [-Identity] <SPContentDatabasePipeBind> [-AssignmentCollection <SPAssignmentCollection>] [-Confirm [<SwitchParameter>]] [-WhatIf [<SwitchParameter>]]

Use the Dismount-SPContentDatabase cmdlet to detatch the given content database from its currently associated Web application. This cmdlet will not delete the content database. Use the Remove-SPContentDatabase cmdlet to delete a content database.

SharePoint Management Shell


Parameter Required Type Description




Specifies the content database to detach.

The type must be a valid GUID, in the form 12345678-90ab-cdef-1234-567890bcdefgh; a valid name of a SharePoint content database (for example, SPContentDB1); or an instance of a valid SPContentDatabase object.




Manages objects for the purpose of proper disposal. Use of objects, such as SPWeb or SPSite, can use large amounts of memory and use of these objects in Windows PowerShell scripts requires proper memory management. Using the SPAssignment object, you can assign objects to a variable and dispose of the objects after they are needed to free up memory. When SPWeb, SPSite, or SPSiteAdministration objects are used, the objects are automatically disposed of if an assignment collection or the Global parameter is not used.

When the Global parameter is used, all objects are contained in the global store. If objects are not immediately used, or disposed of by using the Stop-SPAssignment command, an out-of-memory scenario can occur.




Prompts you for confirmation before executing the command. For more information, type the following command: get-help about_commonparameters




Displays a message that describes the effect of the command instead of executing the command. For more information, type the following command: get-help about_commonparameters


Error Description


Exceptions Description

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

Dismount-SPContentDatabase 12345678-90ab-cdef-1234-567890abcdef

This example detaches the content database with the GUID 12345678-90ab-cdef-1234-567890abcdef from its current parent Web application.

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

Get-SPContentDatabase -WebApplication http://sitename | Dismount-SPContentDatabase -WhatIf

This example detaches all content databases from the Web application on port 80 of the local machine. Remove the WhatIf parameter to perform the operation.

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