functions/Remove-DbaDatabaseSnapshot.ps1
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#ValidationTags#FlowControl# function Remove-DbaDatabaseSnapshot { <# .SYNOPSIS Removes database snapshots .DESCRIPTION Removes (drops) database snapshots from the server .PARAMETER SqlInstance The SQL Server that you're connecting to .PARAMETER SqlCredential Credential object used to connect to the SQL Server as a different user .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 PipelineSnapshot Internal parameter .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: niphlod Website: https://dbatools.io Copyright: (C) Chrissy LeMaire, clemaire@gmail.com License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Remove-DbaDatabaseSnapshot .EXAMPLE Remove-DbaDatabaseSnapshot -SqlInstance sqlserver2014a Removes all database snapshots from sqlserver2014a .EXAMPLE Remove-DbaDatabaseSnapshot -SqlInstance sqlserver2014a -Snapshot HR_snap_20161201, HR_snap_20161101 Removes database snapshots named HR_snap_20161201 and HR_snap_20161101 .EXAMPLE Remove-DbaDatabaseSnapshot -SqlInstance sqlserver2014a -Database HR, Accounting Removes all database snapshots having HR and Accounting as base dbs .EXAMPLE Remove-DbaDatabaseSnapshot -SqlInstance sqlserver2014a -Snapshot HR_snapshot, Accounting_snapshot Removes HR_snapshot and Accounting_snapshot .EXAMPLE Get-DbaDatabaseSnapshot -SqlInstance sql2016 | Where SnapshotOf -like '*dumpsterfire*' | Remove-DbaDatabaseSnapshot Removes all snapshots associated with databases that have dumpsterfire in the name #> [CmdletBinding(SupportsShouldProcess = $true)] param ( [parameter(Mandatory = $false, ValueFromPipeline = $true)] [Alias("ServerInstance", "SqlServer")] [DbaInstanceParameter[]]$SqlInstance, [Alias("Credential")] [PSCredential] $SqlCredential, [Alias("Databases")] [object[]]$Database, [object[]]$ExcludeDatabase, [object[]]$Snapshot, [parameter(ValueFromPipeline = $true)] [object]$PipelineSnapshot, [switch]$AllSnapshots, [switch]$Force, [Alias('Silent')] [switch]$EnableException ) process { if (!$Snapshot -and !$Database -and !$AllSnapshots -and $null -eq $PipelineSnapshot -and !$ExcludeDatabase) { Stop-Function -Message "You must specify -Snapshot, -Database, -Exclude or -AllSnapshots" return } # handle the database object passed by the pipeline # do we need a specialized type back ? if ($null -ne $PipelineSnapshot -and $PipelineSnapshot.getType().Name -eq 'pscustomobject') { if ($Pscmdlet.ShouldProcess($PipelineSnapshot.SnapshotDb.Parent.DomainInstanceName, "Remove db snapshot $($PipelineSnapshot.SnapshotDb.Name)")) { try { $server = $PipelineSnapshot.SnapshotDb.Parent } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } try { if ($Force) { $server.KillAllProcesses($PipelineSnapshot.SnapshotDb.Name) } $null = $server.Query("drop database [$($PipelineSnapshot.SnapshotDb.Name)]") $status = "Dropped" } catch { Write-Message -Level Warning -Message $_ $status = "Drop failed" } [PSCustomObject]@{ ComputerName = $PipelineSnapshot.SnapshotDb.Parent.NetName InstanceName = $PipelineSnapshot.SnapshotDb.Parent.ServiceName SqlInstance = $PipelineSnapshot.SnapshotDb.Parent.DomainInstanceName Database = $PipelineSnapshot.Database SnapshotOf = $PipelineSnapshot.SnapshotOf Status = $status } } return } # if piped value either doesn't exist or is not the proper type foreach ($instance in $SqlInstance) { Write-Message -Level Verbose -Message "Connecting to $instance" try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } $alldbq = @" SELECT sn.name AS Name, dt.name AS DatabaseSnapshotBaseName, sn.create_date AS CreateDate, CASE WHEN sn.state = 6 THEN 0 ELSE 1 END AS IsAccessible, CASE WHEN sn.source_database_id IS NOT NULL THEN 1 ELSE 0 END AS IsDatabaseSnapshot FROM sys.databases sn LEFT JOIN sys.databases dt ON sn.source_database_id = dt.database_id "@ $dbs = $server.Query($alldbq) if ($Database) { $dbs = $dbs | Where-Object { $Database -contains $_.DatabaseSnapshotBaseName } } if ($ExcludeDatabase) { $dbs = $dbs | Where-Object { $ExcludeDatabase -notcontains $_.DatabaseSnapshotBaseName } } if ($Snapshot) { $dbs = $dbs | Where-Object { $Snapshot -contains $_.Name } } if (!$Snapshot -and !$Database) { $dbs = $dbs | Where-Object IsDatabaseSnapshot -eq $true | Sort-Object DatabaseSnapshotBaseName, Name } foreach ($dbraw in $dbs) { if ($dbraw.IsAccessible -eq $false) { Write-Message -Level Warning -Message "Database $dbraw is not accessible." continue } $db = $server.Databases[$($dbraw.Name)] if ($Pscmdlet.ShouldProcess($server.name, "Remove db snapshot $db")) { $basedb = $db.DatabaseSnapshotBaseName try { if ($Force) { # cannot drop the snapshot if someone is using it $server.KillAllProcesses($db) } $null = $server.Query("drop database $db") $status = "Dropped" } catch { Write-Message -Level Warning -Message $_ $status = "Drop failed" } [PSCustomObject]@{ ComputerName = $server.NetName InstanceName = $server.ServiceName SqlInstance = $server.DomainInstanceName Database = $db SnapshotOf = $basedb Status = $status } } } } } } |