functions/Remove-DbaDbSnapshot.ps1
|
function Remove-DbaDbSnapshot { <# .SYNOPSIS Removes database snapshots .DESCRIPTION Removes (drops) database snapshots from the server .PARAMETER SqlInstance The target SQL Server instance or instances .PARAMETER SqlCredential 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. .PARAMETER Database Removes snapshots for only this specific base db .PARAMETER ExcludeDatabase Removes snapshots excluding this specific base dbs .PARAMETER Snapshot Restores databases from snapshot with this name only .PARAMETER AllSnapshots Specifies that you want to remove all snapshots from the server .PARAMETER Force Will forcibly kill all running queries that prevent the drop process. .PARAMETER WhatIf Shows what would happen if the command were to run .PARAMETER Confirm Prompts for confirmation of every step. .PARAMETER InputObject Enables input from Get-DbaDbSnapshot .PARAMETER EnableException 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. .NOTES Tags: Snapshot, Database Author: Simone Bizzotto (@niphold) Website: https://dbatools.io Copyright: (c) 2018 by dbatools, licensed under MIT License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Remove-DbaDbSnapshot .EXAMPLE PS C:\> Remove-DbaDbSnapshot -SqlInstance sql2014 -Snapshot HR_snap_20161201, HR_snap_20161101 Removes database snapshots named HR_snap_20161201 and HR_snap_20161101 .EXAMPLE PS C:\> Remove-DbaDbSnapshot -SqlInstance sql2014 -Database HR, Accounting Removes all database snapshots having HR and Accounting as base dbs .EXAMPLE PS C:\> Get-DbaDbSnapshot -SqlInstance sql2014 -Database HR, Accounting | Remove-DbaDbSnapshot Removes all database snapshots having HR and Accounting as base dbs .EXAMPLE PS C:\> Remove-DbaDbSnapshot -SqlInstance sql2014 -Snapshot HR_snapshot, Accounting_snapshot Removes HR_snapshot and Accounting_snapshot .EXAMPLE PS C:\> Get-DbaDbSnapshot -SqlInstance sql2016 | Where-Object SnapshotOf -like '*dumpsterfire*' | Remove-DbaDbSnapshot Removes all snapshots associated with databases that have dumpsterfire in the name .EXAMPLE PS C:\> Get-DbaDbSnapshot -SqlInstance sql2016 | Out-GridView -PassThru | Remove-DbaDbSnapshot Allows the selection of snapshots on sql2016 to remove .EXAMPLE PS C:\> Remove-DbaDbSnapshot -SqlInstance sql2014 -AllSnapshots Removes all database snapshots from sql2014 .EXAMPLE PS C:\> Remove-DbaDbSnapshot -SqlInstance sql2014 -AllSnapshots -Confirm Removes all database snapshots from sql2014 and prompts for each database #> [CmdletBinding(SupportsShouldProcess, ConfirmImpact = "High")] param ( [DbaInstanceParameter[]]$SqlInstance, [PSCredential]$SqlCredential, [string[]]$Database, [string[]]$ExcludeDatabase, [string[]]$Snapshot, [parameter(ValueFromPipeline)] [Microsoft.SqlServer.Management.Smo.Database[]]$InputObject, [switch]$AllSnapshots, [switch]$Force, [switch]$EnableException ) begin { if ($Force) { $ConfirmPreference = 'none' } $defaultProps = 'ComputerName', 'InstanceName', 'SqlInstance', 'Database as Name', 'Status' } process { if (!$Snapshot -and !$Database -and !$AllSnapshots -and $null -eq $InputObject -and !$ExcludeDatabase) { Stop-Function -Message "You must pipe in a snapshot or specify -Snapshot, -Database, -ExcludeDatabase or -AllSnapshots" return } # if piped value either doesn't exist or is not the proper type foreach ($instance in $SqlInstance) { try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Error occurred while establishing connection to $instance" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } $InputObject += Get-DbaDbSnapshot -SqlInstance $server -Database $Database -ExcludeDatabase $ExcludeDatabase -Snapshot $Snapshot } foreach ($db in $InputObject) { $server = $db.Parent if (-not $db.DatabaseSnapshotBaseName) { Stop-Function -Message "$db on $server is not a database snapshot" -Continue } if ($Force) { $db | Remove-DbaDatabase -Confirm:$false | Select-DefaultView -Property $defaultProps } else { try { if ($PsCmdlet.ShouldProcess("$db on $server", "Drop snapshot")) { $db.Drop() $server.Refresh() [pscustomobject]@{ ComputerName = $server.ComputerName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Database = $db.name Status = "Dropped" } | Select-DefaultView -Property $defaultProps } } catch { Write-Message -Level Verbose -Message "Could not drop database $db on $server" [pscustomobject]@{ ComputerName = $server.ComputerName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Database = $db.name Status = (Get-ErrorMessage -Record $_) } | Select-DefaultView -Property $defaultProps } } } } } |