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Copy-DbaDatabase.ps1
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function Copy-DbaDatabase {
<#
.SYNOPSIS
Migrates SQL Server databases from one SQL Server to another.
.DESCRIPTION
This script provides the ability to migrate databases using detach/copy/attach or backup/restore. This script works with named instances, clusters and SQL Server Express Edition.
By default, databases will be migrated to the destination SQL Server's default data and log directories. You can override this by specifying -ReuseSourceFolderStructure. Filestreams and filegroups are also migrated. Safety is emphasized.
If you are experiencing issues with Copy-DbaDatabase, please use Backup-DbaDatabase | Restore-DbaDatabase instead.
.PARAMETER Source
Source SQL Server.
.PARAMETER SourceSqlCredential
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 Destination
Destination SQL Server. You may specify multiple servers.
Note that when using -BackupRestore with multiple servers, the backup will only be performed once and backups will be deleted at the end (if you didn't specify -NoBackupCleanup).
When using -DetachAttach with multiple servers, -Reattach must be specified.
.PARAMETER DestinationSqlCredential
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
Migrates only specified databases. This list is auto-populated from the server for tab completion. Multiple databases may be specified as a collection.
.PARAMETER ExcludeDatabase
Excludes specified databases when performing -AllDatabases migrations. This list is auto-populated from the Source for tab completion.
.PARAMETER AllDatabases
If this switch is enabled, all user databases will be migrated. System and support databases will not be migrated. Requires -BackupRestore or -DetachAttach.
.PARAMETER BackupRestore
If this switch is enabled, the copy-only backup and restore method will be used to migrate the database(s). This method requires that you specify -SharedPath in a valid UNC format (\\server\share).
Backups will be immediately deleted after use unless -NoBackupCleanup is specified.
.PARAMETER AdvancedBackupParams
Provide additional parameters to the backup command as a hashtable.
.PARAMETER SharedPath
Specifies the network location for the backup files. The SQL Server service accounts must have read/write permission on this path.
Can be either a full path 'c:\backups', a UNC path '\\server\backups' or an Azure storage Account 'https://example.blob.core.windows.net/sql/'
.Parameter AzureCredential
The name of the credential on the SQL instance that can write to the AzureBaseUrl, only needed if using Storage access keys
If using SAS credentials, the command will look for a credential with a name matching the AzureBaseUrl
.PARAMETER WithReplace
If this switch is enabled, the restore is executed with WITH REPLACE.
.PARAMETER NoRecovery
If this switch is enabled, the restore is executed with WITH NORECOVERY. Ideal for staging.
.PARAMETER NoBackupCleanup
If this switch is enabled, backups generated by this cmdlet will not be deleted after they are restored. The default behavior is to delete these backups.
.PARAMETER NumberFiles
Number of files to split the backup. Default is 3.
.PARAMETER DetachAttach
If this switch is enabled, the detach/copy/attach method is used to perform database migrations. No files are deleted on Source. If Destination attachment fails, the Source database will be reattached. File copies are performed over administrative shares (\\server\x$\mssql) using BITS. If a database is being mirrored, the mirror will be broken prior to migration.
.PARAMETER Reattach
If this switch is enabled, all databases are reattached to Source after DetachAttach migration.
.PARAMETER SetSourceReadOnly
If this switch is enabled, all migrated databases are set to ReadOnly on Source prior to detach/attach & backup/restore.
If -Reattach is used, databases are set to read-only after reattaching.
.PARAMETER ReuseSourceFolderStructure
If this switch is enabled, databases will be migrated to a data and log directory structure on Destination mirroring that used on Source. By default, the default data and log directories for Destination will be used when the databases are migrated.
The structure on Source will be kept exactly, so consider this if you're migrating between different versions and use part of Microsoft's default Sql structure (MSSql12.INSTANCE, etc)
To reuse Destination folder structure, use the -WithReplace switch.
.PARAMETER IncludeSupportDbs
If this switch is enabled, ReportServer, ReportServerTempDb, SSISDB, and distribution databases will be copied if they exist on Source. A log file named $SOURCE-$destinstance-$date-Sqls.csv will be written to the current directory.
Use of this switch requires -BackupRestore or -DetachAttach as well.
.PARAMETER InputObject
Enables piped input from Get-DbaDatabase
.PARAMETER UseLastBackup
Use the last full, diff and logs instead of performing backups. Note that the backups must exist in a location accessible by all destination servers, such a network share.
.PARAMETER Continue
If specified, will to attempt to restore transaction log backups on top of existing database(s) in Recovering or Standby states. Only usable with -UseLastBackup
.PARAMETER NoCopyOnly
If this switch is enabled, backups will be taken without COPY_ONLY. This will break the LSN backup chain, which will interfere with the restore chain of the database.
By default this switch is disabled, so backups will be taken with COPY_ONLY. This will preserve the LSN backup chain.
For more details please refer to this MSDN article - https://msdn.microsoft.com/en-us/library/ms191495.aspx
.PARAMETER NewName
If a single database is being copied, this will be used to rename the database during the copy process. Any occurrence of the original database name in the physical file names will be replaced with NewName
If specified with multiple databases a warning will be raised and the copy stopped
This option is mutually exclusive of Prefix
.PARAMETER Prefix
All copied database names and physical files will be prefixed with this string
This option is mutually exclusive of NewName
.PARAMETER SetSourceOffline
If this switch is enabled, the Source database will be set to Offline after being copied.
.PARAMETER KeepCDC
Indicates whether CDC information should be copied as part of the database
.PARAMETER KeepReplication
Indicates whether replication configuration should be copied as part of the database copy operation
.PARAMETER WhatIf
If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.
.PARAMETER Confirm
If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.
.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.
.PARAMETER Force
If this switch is enabled, existing databases on Destination with matching names from Source will be dropped.
If using -DetachReattach, mirrors will be broken and the database(s) dropped from Availability Groups.
If using -SetSourceReadonly, this will instantly roll back any open transactions that may be stopping the process.
.NOTES
Tags: Migration, Backup, Restore
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
Requires: sysadmin access on SQL Servers
Limitations:
- Doesn't cover what it doesn't cover (replication, certificates, etc)
- SQL Server 2000 databases cannot be directly migrated to SQL Server 2012 and above.
- Logins within SQL Server 2012 and above logins cannot be migrated to SQL Server 2008 R2 and below.
.LINK
https://dbatools.io/Copy-DbaDatabase
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2014a -Destination sql2014b -Database TestDB -BackupRestore -SharedPath \\fileshare\sql\migration
Migrates a single user database TestDB using Backup and restore from instance sql2014a to sql2014b. Backup files are stored in \\fileshare\sql\migration.
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2012 -Destination sql2014, sql2016 -DetachAttach -Reattach
Databases will be migrated from sql2012 to both sql2014 and sql2016 using the detach/copy files/attach method.The following will be performed: kick all users out of the database, detach all data/log files, move files across the network over an admin share (\\SqlSERVER\M$\MSSql...), attach file on destination server, reattach at source. If the database files (*.mdf, *.ndf, *.ldf) on *destination* exist and aren't in use, they will be overwritten.
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2014a -Destination sqlcluster, sql2016 -BackupRestore -UseLastBackup -Force
Migrates all user databases to sqlcluster and sql2016 using the last Full, Diff and Log backups from sql204a. If the databases exist on the destinations, they will be dropped prior to attach.
Note that the backups must exist in a location accessible by all destination servers, such a network share.
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2014a -Destination sqlcluster -ExcludeDatabase Northwind, pubs -IncludeSupportDbs -Force -BackupRestore -SharedPath \\fileshare\sql\migration
Migrates all user databases except for Northwind and pubs by using backup/restore (copy-only). Backup files are stored in \\fileshare\sql\migration. If the database exists on the destination, it will be dropped prior to attach.
It also includes the support databases (ReportServer, ReportServerTempDb, SSISDB, distribution).
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2014 -Destination managedinstance.cus19c972e4513d6.database.windows.net -DestinationSqlCredential $cred -AllDatabases -BackupRestore -SharedPath https://someblob.blob.core.windows.net/sql
Migrate all user databases from instance sql2014 to the specified Azure SQL Manage Instance using the blob storage account https://someblob.blob.core.windows.net/sql using a Shared Access Signature (SAS) credential with a name matching the blob storage account
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2014 -Destination managedinstance.cus19c972e4513d6.database.windows.net -DestinationSqlCredential $cred -Database MyDb -NewName AzureDb -WithReplace -BackupRestore -SharedPath https://someblob.blob.core.windows.net/sql -AzureCredential AzBlobCredential
Migrates Mydb from instance sql2014 to AzureDb on the specified Azure SQL Manage Instance, replacing the existing AzureDb if it exists, using the blob storage account https://someblob.blob.core.windows.net/sql using the Sql Server Credential AzBlobCredential
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sql2014a -Destination sqlcluster -BackupRestore -SharedPath \\FS\Backup -AdvancedBackupParams @{ CompressBackup = $true }
Migrates all user databases to sqlcluster. Uses the parameter CompressBackup with the backup command to save some space on the shared path.
.EXAMPLE
PS C:\> Copy-DbaDatabase -Source sqlcs -Destination sqlcs -Database t -DetachAttach -NewName t_copy -Reattach
Copies database t from sqlcs to the same server (sqlcs) using the detach/copy/attach method. The new database will be named t_copy and the original database will be reattached.
#>
[CmdletBinding(DefaultParameterSetName = "DbBackup", SupportsShouldProcess, ConfirmImpact = "Medium")]
[Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseOutputTypeCorrectly", "", Justification = "PSSA Rule Ignored by BOH")]
[Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSAvoidUsingPlainTextForPassword", "AzureCredential", Justification = "Unfortunate variable name that doesn't hold a password")]
param (
[DbaInstanceParameter]$Source,
[PSCredential]$SourceSqlCredential,
[parameter(Mandatory)]
[DbaInstanceParameter[]]$Destination,
[PSCredential]$DestinationSqlCredential,
[object[]]$Database,
[object[]]$ExcludeDatabase,
[Alias("All")]
[parameter(ParameterSetName = "DbBackup")]
[parameter(ParameterSetName = "DbAttachDetach")]
[switch]$AllDatabases,
[parameter(Mandatory, ParameterSetName = "DbBackup")]
[switch]$BackupRestore,
[parameter(ParameterSetName = "DbBackup")]
[hashtable]$AdvancedBackupParams,
[parameter(ParameterSetName = "DbBackup",
HelpMessage = "Specify a valid network share in the format \\server\share that can be accessed by your account and the SQL Server service accounts for both Source and Destination.")]
[string]$SharedPath,
[string]$AzureCredential,
[parameter(ParameterSetName = "DbBackup")]
[switch]$WithReplace,
[parameter(ParameterSetName = "DbBackup")]
[switch]$NoRecovery,
[parameter(ParameterSetName = "DbBackup")]
[switch]$NoBackupCleanup,
[parameter(ParameterSetName = "DbBackup")]
[ValidateRange(1, 64)]
[int]$NumberFiles = 3,
[parameter(Mandatory, ParameterSetName = "DbAttachDetach")]
[switch]$DetachAttach,
[parameter(ParameterSetName = "DbAttachDetach")]
[switch]$Reattach,
[parameter(ParameterSetName = "DbBackup")]
[parameter(ParameterSetName = "DbAttachDetach")]
[switch]$SetSourceReadOnly,
[Alias("ReuseFolderStructure")]
[parameter(ParameterSetName = "DbBackup")]
[parameter(ParameterSetName = "DbAttachDetach")]
[switch]$ReuseSourceFolderStructure,
[parameter(ParameterSetName = "DbBackup")]
[parameter(ParameterSetName = "DbAttachDetach")]
[switch]$IncludeSupportDbs,
[parameter(ParameterSetName = "DbBackup")]
[switch]$UseLastBackup,
[parameter(ParameterSetName = "DbBackup")]
[switch]$Continue,
[parameter(ValueFromPipeline)]
[Microsoft.SqlServer.Management.Smo.Database[]]$InputObject,
[switch]$NoCopyOnly,
[parameter(ParameterSetName = "DbBackup")]
[switch]$KeepCDC,
[parameter(ParameterSetName = "DbBackup")]
[switch]$KeepReplication,
[switch]$SetSourceOffline,
[string]$NewName,
[string]$Prefix,
[switch]$Force,
[switch]$EnableException
)
begin {
$CopyOnly = -not $NoCopyOnly
if ($BackupRestore -and (-not $SharedPath -and -not $UseLastBackup)) {
Stop-Function -Message "When using -BackupRestore, you must specify -SharedPath or -UseLastBackup"
return
}
if ($SharedPath -and $UseLastBackup) {
Stop-Function -Message "-SharedPath cannot be used with -UseLastBackup because the backup path is determined by the paths in the last backups"
return
}
if ($DetachAttach -and -not $Reattach -and $Destination.Count -gt 1) {
Stop-Function -Message "When using -DetachAttach with multiple servers, you must specify -Reattach to reattach database at source"
return
}
if ($SharedPath -like 'https*' -and $DetachAttach) {
Stop-Function -Message "Cannot use DetachAttach with Azure storage. Option is only available with BackupRestore"
return
}
if ($Continue -and -not $UseLastBackup) {
Stop-Function -Message "-Continue cannot be used without -UseLastBackup"
return
}
if ($Force) {
$ConfirmPreference = 'none'
}
function Get-SqlFileStructure {
$dbcollection = @{
};
$databaseProgressbar = 0
foreach ($db in $databaseList) {
Write-Progress -Id 1 -Activity "Processing database file structure" -PercentComplete ($databaseProgressbar / $dbCount * 100) -Status "Processing $databaseProgressbar of $dbCount."
$dbName = $db.Name
Write-Message -Level Verbose -Message $dbName
$databaseProgressbar++
$dbStatus = $db.status.toString()
if ($dbStatus.StartsWith("Normal") -eq $false) {
continue
}
$destinstancefiles = @{
}; $sourcefiles = @{
}
$where = "Filetype <> 'LOG' and Filetype <> 'FULLTEXT'"
$datarows = $dbFileTable.Tables.Select("dbname = '$dbName' and $where")
# Data Files
foreach ($file in $datarows) {
# Destination File Structure
$d = @{
}
if ($ReuseSourceFolderStructure) {
$d.physical = $file.filename
} elseif ($WithReplace) {
$name = $file.Name
$destfile = $remoteDbFileTable.Tables[0].Select("dbname = '$dbName' and name = '$name'")
$d.physical = $destfile.filename
if ($null -eq $d.physical) {
$directory = Get-SqlDefaultPaths $destServer data
$fileName = Split-Path $file.filename -Leaf
$d.physical = "$directory\$fileName"
}
} else {
$directory = Get-SqlDefaultPaths $destServer data
$fileName = Split-Path $file.filename -Leaf
$d.physical = "$directory\$fileName"
}
$d.logical = $file.Name
$d.remotefilename = Join-AdminUNC $destFullComputerName $d.physical
$destinstancefiles.add($file.Name, $d)
# Source File Structure
$s = @{
}
$s.logical = $file.Name
$s.physical = $file.filename
$s.remotefilename = Join-AdminUNC $sourceFullComputerName $s.physical
$sourcefiles.add($file.Name, $s)
}
# Add support for Full Text Catalogs in SQL Server 2005 and below
if ($sourceServer.VersionMajor -lt 10) {
try {
$fttable = $null = $sourceServer.Databases[$dbName].ExecuteWithResults('sp_help_fulltext_catalogs')
$allrows = $fttable.Tables[0].rows
} catch {
# Nothing, it's just not enabled
# here to avoid an empty catch
$null = 1
}
foreach ($ftc in $allrows) {
# Destination File Structure
$d = @{
}
$pre = "sysft_"
$name = $ftc.Name
$physical = $ftc.Path # RootPath
$logical = "$pre$name"
if ($ReuseSourceFolderStructure) {
$d.physical = $physical
} else {
$directory = Get-SqlDefaultPaths $destServer data
if ($destServer.VersionMajor -lt 10) {
$directory = "$directory\FTDATA"
}
$fileName = Split-Path($physical) -Leaf
$d.physical = "$directory\$fileName"
}
$d.logical = $logical
$d.remotefilename = Join-AdminUNC $destFullComputerName $d.physical
$destinstancefiles.add($logical, $d)
# Source File Structure
$s = @{
}
$pre = "sysft_"
$name = $ftc.Name
$physical = $ftc.Path # RootPath
$logical = "$pre$name"
$s.logical = $logical
$s.physical = $physical
$s.remotefilename = Join-AdminUNC $sourceFullComputerName $s.physical
$sourcefiles.add($logical, $s)
}
}
$where = "Filetype = 'LOG'"
$datarows = $dbFileTable.Tables[0].Select("dbname = '$dbName' and $where")
# Log Files
foreach ($file in $datarows) {
$d = @{
}
if ($ReuseSourceFolderStructure) {
$d.physical = $file.filename
} elseif ($WithReplace) {
$name = $file.Name
$destfile = $remoteDbFileTable.Tables[0].Select("dbname = '$dbName' and name = '$name'")
$d.physical = $destfile.filename
if ($null -eq $d.physical) {
$directory = Get-SqlDefaultPaths $destServer data
$fileName = Split-Path $file.filename -Leaf
$d.physical = "$directory\$fileName"
}
} else {
$directory = Get-SqlDefaultPaths $destServer log
$fileName = Split-Path $file.filename -Leaf
$d.physical = "$directory\$fileName"
}
$d.logical = $file.Name
$d.remotefilename = Join-AdminUNC $destFullComputerName $d.physical
$destinstancefiles.add($file.Name, $d)
$s = @{
}
$s.logical = $file.Name
$s.physical = $file.filename
$s.remotefilename = Join-AdminUNC $sourceFullComputerName $s.physical
$sourcefiles.add($file.Name, $s)
}
$location = @{
}
$location.add("Destination", $destinstancefiles)
$location.add("Source", $sourcefiles)
$dbcollection.Add($($db.Name), $location)
}
$fileStructure = [pscustomobject]@{
"databases" = $dbcollection
}
Write-Progress -Id 1 -Activity "Processing database file structure" -Status "Completed" -Completed
return $fileStructure
}
function Dismount-SqlDatabase {
[CmdletBinding()]
param (
[object]$server,
[string]$dbName
)
$currentdb = $server.databases[$dbName]
if ($currentdb.IsMirroringEnabled) {
try {
Write-Message -Level Verbose -Message "Breaking mirror for $dbName"
$currentdb.ChangeMirroringState([Microsoft.SqlServer.Management.Smo.MirroringOption]::Off)
$currentdb.Alter()
$currentdb.Refresh()
Write-Message -Level Verbose -Message "Could not break mirror for $dbName. Skipping."
} catch {
Stop-Function -Message "Issue breaking mirror." -Target $dbName -ErrorRecord $_
return $false
}
}
if ($currentdb.AvailabilityGroupName) {
$agName = $currentdb.AvailabilityGroupName
Write-Message -Level Verbose -Message "Attempting remove from Availability Group $agName."
try {
$server.AvailabilityGroups[$currentdb.AvailabilityGroupName].AvailabilityDatabases[$dbName].Drop()
Write-Message -Level Verbose -Message "Successfully removed $dbName from detach from $agName on $($server.Name)."
} catch {
Stop-Function -Message "Could not remove $dbName from $agName on $($server.Name)." -Target $dbName -ErrorRecord $_
return $false
}
}
Write-Message -Level Verbose -Message "Attempting detach from $dbName from $source."
####### Using Sql to detach does not modify the $currentdb collection #######
$server.KillAllProcesses($dbName)
try {
$sql = "ALTER DATABASE [$dbName] SET SINGLE_USER WITH ROLLBACK IMMEDIATE"
Write-Message -Level Verbose -Message $sql
$null = $server.Query($sql)
Write-Message -Level Verbose -Message "Successfully set $dbName to single-user from $source."
} catch {
Stop-Function -Message "Issue setting database to single-user." -Target $dbName -ErrorRecord $_
}
try {
$sql = "EXEC master.dbo.sp_detach_db N'$dbName'"
Write-Message -Level Verbose -Message $sql
$null = $server.Query($sql)
Write-Message -Level Verbose -Message "Successfully detached $dbName from $source."
return $true
} catch {
Stop-Function -Message "Issue detaching database." -Target $dbName -ErrorRecord $_
return $false
}
}
function Mount-SqlDatabase {
[CmdletBinding()]
param (
[object]$server,
[string]$dbName,
[object]$fileStructure,
[string]$dbOwner
)
if ($null -eq $server.Logins.Item($dbOwner)) {
try {
$dbOwner = ($destServer.logins | Where-Object {
$_.id -eq 1
}).Name
} catch {
$dbOwner = "sa"
}
}
try {
$null = $server.AttachDatabase($dbName, $fileStructure, $dbOwner, [Microsoft.SqlServer.Management.Smo.AttachOptions]::None)
return $true
} catch {
Stop-Function -Message "Issue mounting database." -ErrorRecord $_
return $false
}
}
function Start-SqlFileTransfer {
<#
SYNOPSIS
Internal function. Uses BITS to transfer detached files (.mdf, .ndf, .ldf, and filegroups) to
another server over admin UNC paths. Locations of data files are kept in the
custom object generated by Get-SqlFileStructure
#>
[CmdletBinding(SupportsShouldProcess)]
param (
[object]$fileStructure,
[string]$dbName
)
$filestructure
$copydb = $fileStructure.databases[$dbName]
$dbsource = $copydb.source
$dbdestination = $copydb.destination
foreach ($file in $dbsource.keys) {
if ($Pscmdlet.ShouldProcess($file, "Starting Sql File Transfer")) {
$remotefilename = $dbdestination[$file].remotefilename
$from = $dbsource[$file].remotefilename
try {
if (Test-Path $from -PathType container) {
$null = New-Item -ItemType Directory -Path $remotefilename -Force
Start-BitsTransfer -Source "$from\*.*" -Destination $remotefilename -ErrorAction Stop
$directories = (Get-ChildItem -Recurse $from | Where-Object {
$_.PsIsContainer
}).FullName
foreach ($directory in $directories) {
$newdirectory = $directory.replace($from, $remotefilename)
$null = New-Item -ItemType Directory -Path $newdirectory -Force
Start-BitsTransfer -Source "$directory\*.*" -Destination $newdirectory -ErrorAction Stop
}
} else {
Write-Message -Level Verbose -Message "Copying $from for $dbName."
Start-BitsTransfer -Source $from -Destination $remotefilename -ErrorAction Stop
}
} catch {
try {
# Sometimes BITS trips out temporarily on cloned drives.
Start-BitsTransfer -Source $from -Destination $remotefilename -ErrorAction Stop
} catch {
Write-Message -Level Verbose -Message "Start-BitsTransfer did not succeed. Now attempting with Copy-Item - no progress bar will be shown."
try {
Copy-Item -Path $from -Destination $remotefilename -ErrorAction Stop
$remotefilename
} catch {
Write-Message -Level Verbose -Message "Access denied. This can happen for a number of reasons including issues with cloned disks."
Stop-Function -Message "Alternatively, you may need to run PowerShell as Administrator, especially when running on localhost." -Target $from -ErrorRecord $_
return
}
}
}
}
}
return $true
}
function Start-SqlDetachAttach {
<#
.SYNOPSIS
Internal function. Performs checks, then executes Dismount-SqlDatabase on a database, copies its files to the new server, then performs Mount-SqlDatabase. $sourceServer and $destServer are SMO server objects.
$fileStructure is a custom object generated by Get-SqlFileStructure
#>
[CmdletBinding(SupportsShouldProcess)]
param (
[object]$sourceServer,
[object]$destServer,
[object]$fileStructure,
[string]$dbName
)
if ($Pscmdlet.ShouldProcess($dbName, "Starting detaching and re-attaching from $sourceServer to $destServer")) {
$destfilestructure = New-Object System.Collections.Specialized.StringCollection
$sourceFileStructure = New-Object System.Collections.Specialized.StringCollection
$dbOwner = $sourceServer.databases[$dbName].owner
$destDbName = $fileStructure.databases[$dbName].destinationDbName
if ($null -eq $dbOwner) {
try {
$dbOwner = ($destServer.logins | Where-Object {
$_.id -eq 1
}).Name
} catch {
$dbOwner = "sa"
}
}
foreach ($file in $fileStructure.databases[$dbName].destination.values) {
$null = $destfilestructure.add($file.physical)
}
foreach ($file in $fileStructure.databases[$dbName].source.values) {
$null = $sourceFileStructure.add($file.physical)
}
$detachresult = Dismount-SqlDatabase $sourceServer $dbName
if ($detachresult) {
$transfer = Start-SqlFileTransfer $fileStructure $dbName
if ($transfer -eq $false) {
Write-Message -Level Verbose -Message "Could not copy files."
return "Could not copy files."
}
$attachresult = Mount-SqlDatabase $destServer $destDbName $destfilestructure $dbOwner
if ($attachresult -eq $true) {
# add to added dbs because ATTACH was successful
Write-Message -Level Verbose -Message "Successfully attached $dbName to $destinstance."
return $true
} else {
# add to failed because ATTACH was unsuccessful
Write-Message -Level Verbose -Message "Could not attach $dbName."
return "Could not attach database."
}
} else {
# add to failed because DETACH was unsuccessful
Write-Message -Level Verbose -Message "Could not detach $dbName."
return "Could not detach database."
}
}
}
$backupCollection = @()
}
process {
if (Test-FunctionInterrupt) {
return
}
# testing twice for whatif reasons
if ($BackupRestore -and (-not $SharedPath -and -not $UseLastBackup)) {
Stop-Function -Message "When using -BackupRestore, you must specify -SharedPath or -UseLastBackup"
return
}
if ($SharedPath -and $UseLastBackup) {
Stop-Function -Message "-SharedPath cannot be used with -UseLastBackup because the backup path is determined by the paths in the last backups"
return
}
if ($DetachAttach -and -not $Reattach -and $Destination.Count -gt 1) {
Stop-Function -Message "When using -DetachAttach with multiple servers, you must specify -Reattach to reattach database at source"
return
}
if (($AllDatabases -or $IncludeSupportDbs -or $Database) -and !$DetachAttach -and !$BackupRestore) {
Stop-Function -Message "You must specify -DetachAttach or -BackupRestore when migrating databases."
return
}
if (-not $AllDatabases -and -not $IncludeSupportDbs -and -not $Database -and -not $InputObject) {
Stop-Function -Message "You must specify a -AllDatabases or -Database to continue."
return
}
if ((Test-Bound 'NewName') -and (Test-Bound 'Prefix')) {
Stop-Function -Message "NewName and Prefix are exclusive options, cannot specify both"
return
}
if ($InputObject) {
$Source = $InputObject[0].Parent
$Database = $InputObject.Name
}
if ($Database -contains "master" -or $Database -contains "msdb" -or $Database -contains "tempdb") {
Stop-Function -Message "Migrating system databases is not currently supported." -Continue
}
try {
$sourceServer = Connect-DbaInstance -SqlInstance $Source -SqlCredential $SourceSqlCredential
} catch {
Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $Source
return
}
if ($SharedPath -like 'https*') {
if ($AzureCredential -eq '') {
$tAzureCredential = $SharedPath
} else {
$tAzureCredential = $AzureCredential
}
if (-not (Get-DbaCredential -SqlInstance $sourceServer -Name $tAzureCredential.trim('/'))) {
Stop-Function -Message "Azure storage path passed in, but no matching credential found" -Category InvalidArgument -Target $sourceServer
return
}
}
Invoke-SmoCheck -SqlInstance $sourceServer
# Fix #6600
$sourceFullComputerName = Resolve-DbaComputerName -ComputerName $sourceServer.ComputerName
Write-Message -Level Verbose -Message "Using $sourceFullComputerName as sourceFullComputerName."
Write-Message -Level Verbose -Message "Ensuring user databases exist (counting databases)."
if ($sourceserver.Databases.IsSystemObject -notcontains $false) {
Stop-Function -Message "No user databases to migrate"
return
}
foreach ($destinstance in $Destination) {
try {
$destServer = Connect-DbaInstance -SqlInstance $destinstance -SqlCredential $DestinationSqlCredential
} catch {
Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $destinstance -Continue
}
if ($sourceServer.ComputerName -eq $destServer.ComputerName) {
$script:sameserver = $true
} else {
$script:sameserver = $false
}
if ($SharedPath -like 'https*') {
if ($AzureCredential -eq '') {
$tAzureCredential = $SharedPath
} else {
$tAzureCredential = $AzureCredential
}
if (-not (Get-DbaCredential -SqlInstance $destServer -Name $tAzureCredential.trim('/'))) {
Stop-Function -Message "Azure storage path passed in, but no matching credential found" -Category InvalidArgument -Target $destServer -Continue
}
}
if ($script:sameserver -and $DetachAttach) {
if (-not (Test-ElevationRequirement -ComputerName $sourceServer)) {
return
}
}
$destVersionLower = $destServer.VersionMajor -lt $sourceServer.VersionMajor
$destVersionMinorLow = ($destServer.VersionMajor -eq 10 -and $sourceServer.VersionMajor -eq 10) -and ($destServer.VersionMinor -lt $sourceServer.VersionMinor)
if ($destVersionLower -or $destVersionMinorLow) {
Stop-Function -Message "Error: copy database cannot be made from newer $($sourceServer.VersionString) to older $($destServer.VersionString) SQL Server version."
return
}
$miRestore = $false
if ($destServer.DatabaseEngineEdition -eq 'SqlManagedInstance') {
# we have a managed instance destination, set an internal flag to disable switches that don't work
$miRestore = $True
}
if ($DetachAttach) {
if ($sourceServer.ComputerName -eq $env:COMPUTERNAME -or $destServer.ComputerName -eq $env:COMPUTERNAME) {
if (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
Write-Message -Level Verbose -Message "When running DetachAttach locally on the console, it's possible you'll need to Run As Administrator. Trying anyway."
}
}
}
if ($SharedPath -and $SharedPath -notlike 'https*') {
if ($(Test-DbaPath -SqlInstance $sourceServer -Path $SharedPath) -eq $false) {
Write-Message -Level Verbose -Message "$Source may not be able to access $SharedPath. Trying anyway."
}
if ($(Test-DbaPath -SqlInstance $destServer -Path $SharedPath) -eq $false) {
Write-Message -Level Verbose -Message "$destinstance may not be able to access $SharedPath. Trying anyway."
}
if ($SharedPath.StartsWith('\\')) {
try {
$shareServer = ($SharedPath -split "\\")[2]
$hostEntry = ([Net.Dns]::GetHostEntry($shareServer)).HostName -split "\."
if ($shareServer -ne $hostEntry[0]) {
Write-Message -Level Verbose -Message "Using CNAME records for the network share may present an issue if an SPN has not been created. Trying anyway. If it doesn't work, use a different (A record) hostname."
}
} catch {
Stop-Function -Message "Error validating unc path: $_"
return
}
}
}
# Fix #6600
$destFullComputerName = Resolve-DbaComputerName -ComputerName $destserver.ComputerName
Write-Message -Level Verbose -Message "Using $destFullComputerName as destFullComputerName."
Write-Message -Level Verbose -Message "Performing SMO version check."
Invoke-SmoCheck -SqlInstance $destServer
Write-Message -Level Verbose -Message "Checking to ensure the source isn't the same as the destination."
if ($source -eq $destinstance) {
Stop-Function -Message "Source and Destination SQL Servers instances are the same. Quitting." -Continue
}
Write-Message -Level Verbose -Message "Checking to ensure server is not SQL Server 7 or below."
if ($sourceServer.VersionMajor -lt 8 -or $destServer.VersionMajor -lt 8) {
Stop-Function -Message "This script can only be run on SQL Server 2000 and above. Quitting." -Continue
}
Write-Message -Level Verbose -Message "Checking to ensure detach/attach is not attempted on SQL Server 2000."
if ($destServer.VersionMajor -lt 9 -and $DetachAttach) {
Stop-Function -Message "Detach/Attach not supported when destination SQL Server is version 2000. Quitting." -Target $destServer -Continue
}
Write-Message -Level Verbose -Message "Checking to ensure SQL Server 2000 migration isn't directly attempted to SQL Server 2012."
if ($sourceServer.VersionMajor -lt 9 -and $destServer.VersionMajor -gt 10) {
Stop-Function -Message "SQL Server 2000 databases cannot be migrated to SQL Server versions 2012 and above. Quitting." -Target $destServer -Continue
}
Write-Message -Level Verbose -Message "Warning if migration from 2005 to 2012 and above and attach/detach is used."
if ($sourceServer.VersionMajor -eq 9 -and $destServer.VersionMajor -gt 9 -and !$BackupRestore -and !$Force -and $DetachAttach) {
Stop-Function -Message "Backup and restore is the safest method for migrating from SQL Server 2005 to other SQL Server versions. Please use the -BackupRestore switch or override this requirement by specifying -Force." -Continue
}
if ($sourceServer.Collation -ne $destServer.Collation) {
Write-Message -Level Verbose -Message "Warning on different collation."
Write-Message -Level Verbose -Message "Collation on $Source, $($sourceServer.Collation) differs from the $destinstance, $($destServer.Collation)."
}
Write-Message -Level Verbose -Message "Ensuring destination server version is equal to or greater than source."
if ($sourceServer.VersionMajor -ge $destServer.VersionMajor) {
if ($sourceServer.VersionMinor -gt $destServer.VersionMinor) {
Stop-Function -Message "Source SQL Server version build must be <= destination SQL Server for database migration." -Continue
}
}
# SMO's filestreamlevel is sometimes null
$sql = "select coalesce(SERVERPROPERTY('FilestreamConfiguredLevel'),0) as fs"
$sourceFilestream = $sourceServer.ConnectionContext.ExecuteScalar($sql)
$destFilestream = $destServer.ConnectionContext.ExecuteScalar($sql)
if ($sourceFilestream -gt 0 -and $destFilestream -eq 0) {
$fsWarning = $true
}
Write-Message -Level Verbose -Message "Writing warning about filestream being enabled."
if ($fsWarning) {
Write-Message -Level Verbose -Message "FILESTREAM enabled on $source but not $destinstance. Databases that use FILESTREAM will be skipped."
}
if ($DetachAttach -eq $true) {
Write-Message -Level Verbose -Message "Checking access to remote directories."
$remoteSourcePath = Join-AdminUNC $sourceFullComputerName (Get-SqlDefaultPaths -SqlInstance $sourceServer -filetype data)
if ((Test-Path $remoteSourcePath) -ne $true -and $DetachAttach) {
Write-Message -Level Warning -Message "Can't access remote Sql directories on $source which is required to perform detach/copy/attach."
Write-Message -Level Warning -Message "You can manually try accessing $remoteSourcePath to diagnose any issues."
Stop-Function -Message "Halting database migration"
return
}
$remoteDestPath = Join-AdminUNC $destFullComputerName (Get-SqlDefaultPaths -SqlInstance $destServer -filetype data)
If ((Test-Path $remoteDestPath) -ne $true -and $DetachAttach) {
Write-Message -Level Warning -Message "Can't access remote Sql directories on $destinstance which is required to perform detach/copy/attach."
Write-Message -Level Warning -Message "You can manually try accessing $remoteDestPath to diagnose any issues."
Stop-Function -Message "Halting database migration" -Continue
}
}
if (($Database -or $ExcludeDatabase -or $IncludeSupportDbs) -and (!$DetachAttach -and !$BackupRestore)) {
Stop-Function -Message "You did not select a migration method. Please use -BackupRestore or -DetachAttach."
return
}
if ((!$Database -and !$AllDatabases -and !$IncludeSupportDbs) -and ($DetachAttach -or $BackupRestore)) {
Stop-Function -Message "You did not select any databases to migrate. Please use -AllDatabases or -Database or -IncludeSupportDbs."
return
}
Write-Message -Level Verbose -Message "Building database list."
$databaseList = New-Object System.Collections.ArrayList
$SupportDBs = "ReportServer", "ReportServerTempDB", "distribution", "SSISDB"
foreach ($currentdb in ($sourceServer.Databases | Where-Object IsAccessible)) {
$dbName = $currentdb.Name
$dbOwner = $currentdb.Owner
if ($currentdb.Id -le 4) {
continue
}
if ($Database -and $Database -notcontains $dbName) {
continue
}
if ($IncludeSupportDBs -eq $false -and $SupportDBs -contains $dbName) {
continue
}
if ($IncludeSupportDBs -eq $true -and $SupportDBs -notcontains $dbName) {
if ($AllDatabases -eq $false -and $Database.length -eq 0) {
continue
}
}
$null = $databaseList.Add($currentdb)
}
Write-Message -Level Verbose -Message "Performing count."
$dbCount = $databaseList.Count
if ((Test-Bound 'NewName') -and $dbCount -gt 1) {
Stop-Function -Message "Cannot use NewName when copying multiple databases"
return
}
Write-Message -Level Verbose -Message "Building file structure inventory for $dbCount databases."
if ($sourceServer.VersionMajor -eq 8) {
$sql = "select DB_NAME (dbid) as dbname, name, filename, CASE WHEN groupid = 0 THEN 'LOG' ELSE 'ROWS' END as filetype from sysaltfiles"
} else {
$sql = "SELECT db.Name AS dbname, type_desc AS FileType, mf.Name, Physical_Name AS filename FROM sys.master_files mf INNER JOIN sys.databases db ON db.database_id = mf.database_id"
}
$dbFileTable = $sourceServer.Databases['master'].ExecuteWithResults($sql)
if ($destServer.VersionMajor -eq 8) {
$sql = "select DB_NAME (dbid) as dbname, name, filename, CASE WHEN groupid = 0 THEN 'LOG' ELSE 'ROWS' END as filetype from sysaltfiles"
} else {
$sql = "SELECT db.Name AS dbname, type_desc AS FileType, mf.Name, Physical_Name AS filename FROM sys.master_files mf INNER JOIN sys.databases db ON db.database_id = mf.database_id"
}
$remoteDbFileTable = $destServer.Databases['master'].ExecuteWithResults($sql)
$fileStructure = Get-SqlFileStructure -sourceserver $sourceServer -destserver $destServer -databaselist $databaseList -ReuseSourceFolderStructure $ReuseSourceFolderStructure
$elapsed = [System.Diagnostics.Stopwatch]::StartNew()
$started = Get-Date
$script:TimeNow = (Get-Date -UFormat "%m%d%Y%H%M%S")
if ($AllDatabases -or $ExcludeDatabase -or $IncludeSupportDbs -or $Database) {
foreach ($currentdb in $databaseList) {
$dbName = $currentdb.Name
$dbOwner = $currentdb.Owner
$destinationDbName = $dbName
if ((Test-Bound "NewName")) {
Write-Message -Level Verbose -Message "NewName specified, copying $dbName as $NewName"
$destinationDbName = $NewName
$replaceInFile = $True
}
if ($(Test-Bound "Prefix")) {
$destinationDbName = $prefix + $destinationDbName
Write-Message -Level Verbose -Message "Prefix supplied, copying $dbName as $destinationDbName"
}
$filestructure.databases[$dbName].Add('destinationDbName', $destinationDbName)
ForEach ($key in $filestructure.databases[$dbName].Destination.Keys) {
$splitFileName = Split-Path $fileStructure.databases[$dbName].Destination[$key].remotefilename -Leaf
$SplitPath = Split-Path $fileStructure.databases[$dbName].Destination[$key].remotefilename
if ($replaceInFile) {
$splitFileName = $splitFileName.replace($dbName, $destinationDbName)
}
$splitFileName = $prefix + $splitFileName
$filestructure.databases[$dbName].Destination.$key.remotefilename = Join-DbaPath -Path $SplitPath -ChildPath $splitFileName
$splitFileName = Split-Path $filestructure.databases[$dbName].Destination[$key].physical -Leaf
$SplitPath = Split-Path $fileStructure.databases[$dbName].Destination[$key].physical
if ($replaceInFile) {
$splitFileName = $splitFileName.replace($dbName, $destinationDbName)
}
$splitFileName = $prefix + $splitFileName
$filestructure.databases[$dbName].Destination.$key.physical = Join-DbaPath -Path $SplitPath -ChildPath $splitFileName
}
$copyDatabaseStatus = [pscustomobject]@{
SourceServer = $sourceServer.Name
DestinationServer = $destServer.Name
Name = $dbName