Classe Restore
The Restore object provides programmatic access to restore operations.
Gerarchia di ereditarietà
System.Object
Microsoft.SqlServer.Management.Smo.BackupRestoreBase
Microsoft.SqlServer.Management.Smo.Restore
Spazio dei nomi Microsoft.SqlServer.Management.Smo
Assembly: Microsoft.SqlServer.SmoExtended (in Microsoft.SqlServer.SmoExtended.dll)
Sintassi
'Dichiarazione
Public NotInheritable Class Restore _
Inherits BackupRestoreBase
'Utilizzo
Dim instance As Restore
public sealed class Restore : BackupRestoreBase
public ref class Restore sealed : public BackupRestoreBase
[<SealedAttribute>]
type Restore =
class
inherit BackupRestoreBase
end
public final class Restore extends BackupRestoreBase
Nel tipo Restore sono esposti i membri seguenti.
Costruttori
Nome | Descrizione | |
---|---|---|
Restore() | Initializes a new instance of the Restore class. | |
Restore(String, BackupSet) | Initializes a new instance of the Restore class with specified destination database name and backup set. |
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Proprietà
Nome | Descrizione | |
---|---|---|
Action | Gets or sets the type of restore to be performed. | |
AsyncStatus | Ottiene lo stato asincrono di un processo di backup o di ripristino. Ereditato da BackupRestoreBase. | |
BlockSize | Ottiene o imposta le dimensioni del blocco fisico del backup o del ripristino, in byte. Ereditato da BackupRestoreBase. | |
BufferCount | Ottiene o imposta il numero totale di buffer di I/O da utilizzare per l'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. | |
Checksum | Ottiene o imposta un valore della proprietà Boolean che determina se durante le operazioni di backup o di ripristino viene calcolato un valore di checksum. Ereditato da BackupRestoreBase. | |
ClearSuspectPageTableAfterRestore | Gets or sets a Boolean value that determines whether entries in the suspect page table will be deleted following the restore operation. | |
ContinueAfterError | Ottiene o imposta un valore della proprietà Boolean che determina se il backup o il ripristino continua dopo che si è verificato un errore di checksum. Ereditato da BackupRestoreBase. | |
Database | Ottiene o imposta il database in cui l'operazione di backup o di ripristino viene eseguita. Ereditato da BackupRestoreBase. | |
DatabaseFileGroups | Ottiene i filegroup di SQL Server di destinazione dell'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. | |
DatabaseFiles | Ottiene i file del sistema operativo di destinazione dell'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. | |
DatabasePages | Gets the list of the restore pages. | |
Devices | Ottiene i dispositivi di backup specificati per l'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. | |
FileNumber | Gets or sets the index number used to identify the targeted backup set on the backup medium. | |
KeepReplication | Gets or sets a Boolean property value that specifies whether to maintain a replication configuration during a restore operation. | |
MaxTransferSize | Ottiene o imposta il numero massimo di byte da trasferire tra i supporti di backup e l'istanza di SQL Server. Ereditato da BackupRestoreBase. | |
MediaName | Ottiene o imposta il nome utilizzato per identificare un particolare set di supporti. Ereditato da BackupRestoreBase. | |
NoRecovery | Ottiene o imposta un valore della proprietà Boolean che determina se viene eseguito il backup della parte finale del log e se viene ripristinato lo stato di ripristino del database. Ereditato da BackupRestoreBase. | |
NoRewind | Ottiene o imposta un valore della proprietà Boolean che determina se il nastro verrà tenuto aperto da Microsoft SQL Server dopo l'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. | |
Offset | Gets or sets the array of page addresses to be restored. | |
Partial | Gets or sets a Boolean property value that specifies whether a partial or full restore operation will be performed. | |
PercentCompleteNotification | Ottiene o imposta l'intervallo percentuale per le chiamate del gestore eventi PercentCompleteEventHandler. Ereditato da BackupRestoreBase. | |
RelocateFiles | Gets the array of database logical file names and operating system physical file names used to redirect database storage when a database is restored to a new physical location. | |
ReplaceDatabase | Gets or sets a Boolean value that specifies whether a restore operation creates a new image of the restored database. | |
Restart | Ottiene o imposta un valore della proprietà Boolean che determina se l'operazione di backup o di ripristino verrà riavviata in caso di interruzione. Ereditato da BackupRestoreBase. | |
RestrictedUser | Gets or sets a Boolean property value that specifies whether access to the restored database is restricted to members of the db_owner fixed database role and the dbcreator and sysadmin fixed server roles. | |
StandbyFile | Gets or sets the name of an undo file that is used as part of the imaging strategy for an instance of SQL Server. | |
StopAtMarkAfterDate | Gets or sets the date to be used in conjunction with the mark name specified by StopAtMarkName to determine the stopping point of the recovery operation. | |
StopAtMarkName | Gets or sets the mark name to be used in conjunction with the date specified by StopAtMarkAfterDate to determine the stopping point of the recovery operation. | |
StopBeforeMarkAfterDate | Gets or sets the date to be used in conjunction with the mark name specified by StopBeforeMarkName to determine the stopping point of the recovery operation. | |
StopBeforeMarkName | Gets or sets the mark name to be used in conjunction with the date specified by StopBeforeMarkAfterDate to determine the stopping point of the recovery operation. | |
ToPointInTime | Gets or sets the endpoint for database log restoration. | |
UnloadTapeAfter | Ottiene o imposta un valore della proprietà Boolean che determina se i supporti a nastro vengono riavvolti e scaricati al termine dell'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. |
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Metodi
Nome | Descrizione | |
---|---|---|
Abort | Termina un'operazione di backup o di ripristino in esecuzione. Ereditato da BackupRestoreBase. | |
ClearSuspectPageTable | Deletes entries in the suspect page table. | |
Equals | Ereditato da Object. | |
GetHashCode | Ereditato da Object. | |
GetType | Ereditato da Object. | |
ReadBackupHeader | Reads the backup header and returns information about the media contents. | |
ReadFileList | Returns the list of database files on the targeted media. | |
ReadMediaHeader | Reads the media header and returns the media header values. | |
ReadSuspectPageTable | Returns the suspect page table for the targeted instance of SQL Server. | |
Script | Generates a Transact-SQL script that can be used to re-create the restore operation. | |
SetMediaPassword(SecureString) | Obsoleto. Imposta la password per un set di supporti. Ereditato da BackupRestoreBase. | |
SetMediaPassword(String) | Obsoleto. Imposta la password per un set di supporti. Ereditato da BackupRestoreBase. | |
SetPassword(SecureString) | Imposta la password per un set di backup. Ereditato da BackupRestoreBase. | |
SetPassword(String) | Imposta la password per un set di backup. Ereditato da BackupRestoreBase. | |
SqlRestore | Performs a restore operation on the specified server. | |
SqlRestoreAsync | Performs a restore operation asynchronously. | |
SqlVerify(Server) | Checks the media on the instance of SQL Server that is represented by the specified Server object. | |
SqlVerify(Server, Boolean) | Checks the media on instance of SQL Server that is represented by the specified Server object and loads backup history information into the history tables. | |
SqlVerify(Server, String%) | Checks the media on the instance of SQL Server that is represented by the specified Server object and returns an error message. | |
SqlVerify(Server, Boolean, String%) | Checks the media on the instance of SQL Server that is represented by the specified Server object, loads backup history information into the history tables, and returns an error message. | |
SqlVerifyAsync(Server) | Checks the media on the instance of SQL Server that is represented by the specified Server object asynchronously. | |
SqlVerifyAsync(Server, Boolean) | Checks the media on the instance of SQL Server that is represented by the specified Server object asynchronously and loads backup history information into the history tables. | |
SqlVerifyLatest(Server) | Verifies the most recent backup but does not restore it, and checks to see that the backup set is complete and the entire backup is readable. | |
SqlVerifyLatest(Server, SqlVerifyAction) | Verifies the most recent backup with the specified action, and checks to see that the backup set is complete and the entire backup is readable. | |
SqlVerifyLatest(Server, String%) | Verifies the most recent backup but does not restore it, checks to see that the backup set is complete and the entire backup is readable, and returns an error message. | |
SqlVerifyLatest(Server, SqlVerifyAction, String%) | Verifies the most recent backup with the specified action, checks to see that the backup set is complete and the entire backup is readable, and returns an error message. | |
ToString | Ereditato da Object. | |
Wait | Attende il completamento dell'operazione di backup o di ripristino corrente prima di passare al processo successivo. Ereditato da BackupRestoreBase. |
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Eventi
Nome | Descrizione | |
---|---|---|
Complete | Si verifica al termine dell'operazione di backup o di ripristino. Ereditato da BackupRestoreBase. | |
Information | Si verifica quando da Microsoft SQL Server vengono inviati messaggi informativi che non possono essere gestiti dagli eventi Complete NextMedia o PercentComplete. Ereditato da BackupRestoreBase. | |
NextMedia | Si verifica quando l'operazione di backup o di ripristino esaurisce il supporto in un dispositivo di destinazione. Ereditato da BackupRestoreBase. | |
PercentComplete | Si verifica quando un'operazione di backup o di ripristino raggiunge un'unità di completamento. Ereditato da BackupRestoreBase. |
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Campi
Nome | Descrizione | |
---|---|---|
VerifyComplete | Specifies the VerifyCompleteEventHandler. |
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Osservazioni
By using a Restore object you can do the following:
Restore all or part of a database.
Restore backup images of transaction log records.
Verify the integrity of backup media.
Report the contents of backup media.
Monitor a restore operation, reporting status to the user.
SQL Server can write a backup to one of four media types: disk, tape, named pipe, or a backup device. SQL Server supports backup striping. A striped backup is one directed to more than a single device. Striping is supported to a single media type only. That is, a backup can be written to two tape devices. Half of a backup cannot be written to a tape device and the other half to a disk.
At a minimum, supply values for a restore source when using a Restore object. Use one media type property to specify the restore operation source.
Setting other properties in the Restore object may be required by the restore operation desired.
Thread Safety
Tutti i membri statici pubblici (Shared in Microsoft Visual Basic) di questo tipo sono sicuri per le operazioni a thread multipli. Non è invece garantita la sicurezza dei membri dell'istanza.
To get Restore object properties, users can be a member of the public fixed server role.
To set Restore object properties, users must have CREATE DATABASE permission on the server, or be a member of sysadmin or dbcreator fixed server roles, or be a member of db_owner fixed database role.
To perform a restore operation, users must have CREATE DATABASE permission on the server, or be a member of sysadmin or dbcreator fixed server roles. If the database already exists, then members of the db_owner fixed database role can also perform a restore operation.
Esempi
The following code example demonstrates how to create a normal and an asynchronous backup of the AdventureWorks2012 database and use each of those backups to restore it.
VB
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2012 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")
'Store the current recovery model in a variable.
Dim recoverymod As Integer
recoverymod = db.DatabaseOptions.RecoveryModel
'Define a Backup object variable.
Dim bk As New Backup
'Specify the type of backup, the description, the name, and the database to be backed up.
bk.Action = BackupActionType.Database
bk.BackupSetDescription = "Full backup of AdventureWorks2012"
bk.BackupSetName = "AdventureWorks2012 Backup"
bk.Database = "AdventureWorks2012"
'Declare a BackupDeviceItem by supplying the backup device file name in the constructor, and the type of device is a file.
Dim bdi As BackupDeviceItem
bdi = New BackupDeviceItem("Test_Full_Backup1", DeviceType.File)
'Add the device to the Backup object.
bk.Devices.Add(bdi)
'Set the Incremental property to False to specify that this is a full database backup.
bk.Incremental = False
'Set the expiration date.
Dim backupdate As New Date
backupdate = New Date(2006, 10, 5)
bk.ExpirationDate = backupdate
'Specify that the log must be truncated after the backup is complete.
bk.LogTruncation = BackupTruncateLogType.Truncate
'Run SqlBackup to perform the full database backup on the instance of SQL Server.
bk.SqlBackup(srv)
'Inform the user that the backup has been completed.
Console.WriteLine("Full Backup complete.")
'Remove the backup device from the Backup object.
bk.Devices.Remove(bdi)
'Make a change to the database: in this case, add a table called test_table.
Dim t As Table
t = New Table(db, "test_table")
Dim c As Column
c = New Column(t, "col", DataType.Int)
t.Columns.Add(c)
t.Create()
'Create another file device for the differential backup and add the Backup object.
Dim bdid As BackupDeviceItem
bdid = New BackupDeviceItem("Test_Differential_Backup1", DeviceType.File)
'Add the device to the Backup object.
bk.Devices.Add(bdid)
'Set the Incremental property to True for a differential backup.
bk.Incremental = True
'Run SqlBackup to perform the incremental database backup on the instance of SQL Server.
bk.SqlBackup(srv)
'Inform the user that the differential backup is complete.
Console.WriteLine("Differential Backup complete.")
'Remove the device from the Backup object.
bk.Devices.Remove(bdid)
'Delete the AdventureWorks2012 database before restoring it.
srv.Databases("AdventureWorks2012").Drop()
'Define a Restore object variable.
Dim rs As Restore
rs = New Restore
'Set the NoRecovery property to true, so the transactions are not recovered.
rs.NoRecovery = True
'Add the device that contains the full database backup to the Restore object.
rs.Devices.Add(bdi)
'Specify the database name.
rs.Database = "AdventureWorks2012"
'Restore the full database backup with no recovery.
rs.SqlRestore(srv)
'Inform the user that the Full Database Restore is complete.
Console.WriteLine("Full Database Restore complete.")
'Remove the device from the Restore object.
rs.Devices.Remove(bdi)
'Set te NoRecovery property to False.
rs.NoRecovery = False
'Add the device that contains the differential backup to the Restore object.
rs.Devices.Add(bdid)
'Restore the differential database backup with recovery.
rs.SqlRestore(srv)
'Inform the user that the differential database restore is complete.
Console.WriteLine("Differential Database Restore complete.")
'Remove the device.
rs.Devices.Remove(bdid)
'Set the database recovery mode back to its original value.
srv.Databases("AdventureWorks2012").DatabaseOptions.RecoveryModel = recoverymod
'Drop the table that was added.
srv.Databases("AdventureWorks2012").Tables("test_table").Drop()
srv.Databases("AdventureWorks2012").Alter()
'Remove the backup files from the hard disk.
My.Computer.FileSystem.DeleteFile("C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Backup\Test_Full_Backup1")
My.Computer.FileSystem.DeleteFile("C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Backup\Test_Differential_Backup1")
Powershell
$srv = new-object Microsoft.SqlServer.Management.Smo.Server("(local)")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$db = $srv.Databases.Item("AdventureWorks2012")
$rs = new-object Microsoft.SqlServer.Management.Smo.Restore
$rs.NoRecovery = $TRUE
$rs.Devices.Add($bdi)
$recoverymod = $db.DatabaseOptions.RecoveryModel
$bk = new-object Microsoft.SqlServer.Management.Smo.Backup
$bk.Action = [Microsoft.SqlServer.Management.Smo.BackupActionType]::Database
$bk.BackupSetDescription = "Full backup of AdventureWorks2012"
$bk.BackupSetName = "AdventureWorks2012 Backup"
$bk.Database = "AdventureWorks2012"
$bdi = new-object Microsoft.SqlServer.management.Smo.BackupDeviceItem("Test_Full_Backup1", [Microsoft.SqlServer.Management.Smo.DeviceType]::File)
$bk.Devices.Add($bdi)
$bk.Incremental = $FALSE
$backupdate = new-object System.DateTime(2009, 3, 2)
$bk.ExpirationDate = $backupdate
$bk.LogTruncation = [Microsoft.SqlServer.Management.Smo.BackupTruncateLogType]::Truncate
$bk.SqlBackup($srv)
Write-Host "Full Backup complete."
$bk.Devices.Remove($bdi)
$t = new-object Microsoft.SqlServer.Management.Smo.Table($db, "test_table")
$c = new-object Microsoft.SqlServer.Management.Smo.Column($t, "col", [Microsoft.SqlServer.Management.Smo.DataType]::Int)
$t.Columns.Add($c)
$t.Create()
$bdid = new-object Microsoft.SqlServer.Management.Smo.BackupDeviceItem("Test_Differential_Backup1", [Microsoft.SqlServer.Management.Smo.DeviceType]::File)
$bk.Devices.Add($bdid)
$bk.Incremental = $TRUE
$bk.SqlBackup($srv)
Write-Host "Differential Backup complete."
$bk.Devices.Remove($bdid)
$rs.Database = "AdventureWorks2012"
$srv.Databases["AdventureWorks2012"].Drop()
$rs.SqlRestore($srv)
Write-Host "Full Database Restore complete."
$rs.Devices.Remove($bdi)
$rs.NoRecovery = $FALSE
$rs.Devices.Add($bdid)
$rs.SqlRestore($srv)
Write-Host "Differential Database Restore complete."
$rs.Devices.Remove($bdid)
$srv.Databases["AdventureWorks2012"].DatabaseOptions.RecoveryModel = $recoverymod
$srv.Databases["AdventureWorks2012"].Tables["test_table"].Drop()
$srv.Databases["AdventureWorks2012"].Alter()
remove-item C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Backup\Test_Full_Backup1
remove-item C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Backup\Test_Differential_Backup1
Protezione dei thread
I membri static (Shared in Visual Basic) pubblici di questo tipo sono affidabili. Non è invece garantita la sicurezza dei membri dell'istanza.
Vedere anche
Riferimento
Spazio dei nomi Microsoft.SqlServer.Management.Smo
Altre risorse
Backup e ripristino di database SQL Server
Backup e ripristino dei database e dei log delle transazioni