データベースおよびトランザクション ログのバックアップと復元

例

提供されているコード例を使用するには、アプリケーションを作成するプログラミング環境、プログラミング テンプレート、およびプログラミング言語を選択する必要があります。詳細については、「Visual Studio .NET で Visual Basic SMO プロジェクトを作成する方法」または「Visual Studio .NET で Visual C# SMO プロジェクトを作成する方法」を参照してください。

Visual Basic でのデータベースおよびトランザクション ログのバックアップ

このコード例では、既存のデータベースをファイルにバックアップする方法と復元する方法を示します。

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks database.
Dim db As Database
db = srv.Databases("AdventureWorks")
'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 Adventureworks"
bk.BackupSetName = "AdventureWorks Backup"
bk.Database = "AdventureWorks"
'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 AdventureWorks database before restoring it.
srv.Databases("AdventureWorks").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 = "AdventureWorks"
'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("AdventureWorks").DatabaseOptions.RecoveryModel = recoverymod
'Drop the table that was added.
srv.Databases("AdventureWorks").Tables("test_table").Drop()
srv.Databases("AdventureWorks").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")

Visual C# でのデータベースおよびトランザクション ログのバックアップ

このコード例では、既存のデータベースをファイルにバックアップする方法と復元する方法を示します。

//Connect to the local, default instance of SQL Server. 
{ 
Server srv = default(Server); 
srv = new Server(); 
//Reference the AdventureWorks database. 
Database db = default(Database); 
db = srv.Databases("AdventureWorks"); 
//Store the current recovery model in a variable. 
int recoverymod = 0; 
recoverymod = db.DatabaseOptions.RecoveryModel; 
//Define a Backup object variable. 
Backup bk = 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 Adventureworks"; 
bk.BackupSetName = "AdventureWorks Backup"; 
bk.Database = "AdventureWorks"; 
//Declare a BackupDeviceItem by supplying the backup device file name in the constructor, and the type of device is a file. 
BackupDeviceItem bdi = default(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. 
System.DateTime backupdate = new System.DateTime(); 
backupdate = new System.DateTime(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. 
Table t = default(Table); 
t = new Table(db, "test_table"); 
Column c = default(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. 
BackupDeviceItem bdid = default(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 AdventureWorks database before restoring it. 
srv.Databases("AdventureWorks").Drop(); 
//Define a Restore object variable. 
Restore rs = default(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 = "AdventureWorks"; 
//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("AdventureWorks").DatabaseOptions.RecoveryModel = recoverymod; 
//Drop the table that was added. 
srv.Databases("AdventureWorks").Tables("test_table").Drop(); 
srv.Databases("AdventureWorks").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"); 
} 

Visual Basic でのデータベースの整合性確認の実行

SQL Server には、データ整合性の確認手段が提供されています。このコード例では、指定されたデータベースに対してデータベース整合性の型チェックを実行します。この例では、CheckTables が使用されていますが、CheckAllocations、CheckCatalog、および CheckIdentityValues も同様に使用することができます。

注意
StringCollection オブジェクトの場合は、imports System.Collections.Specialized ステートメントの使用による名前空間への参照が必要になります。

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks database.
Dim db As Database
db = srv.Databases("AdventureWorks")
'Note, to use the StringCollection type the System.Collections.Specialized system namespace must be included in the imports statements.
Dim sc As StringCollection
'Run the CheckTables method and display the results from the returned StringCollection variable.
sc = db.CheckTables(RepairType.None)
Dim c As Integer
For c = 0 To sc.Count - 1
    Console.WriteLine(sc.Item(c))
Next

Visual C# でのデータベースの整合性確認の実行

SQL Server には、データ整合性の確認手段が提供されています。このコード例では、指定されたデータベースに対してデータベース整合性の型チェックを実行します。この例では、CheckTables が使用されていますが、CheckAllocations、CheckCatalog、および CheckIdentityValues も同様に使用することができます。

注意
StringCollection オブジェクトの場合は、imports System.Collections.Specialized ステートメントの使用による名前空間への参照が必要になります。

//Connect to the local, default instance of SQL Server. 
{ 
Server srv = default(Server); 
srv = new Server(); 
//Reference the AdventureWorks database. 
Database db = default(Database); 
db = srv.Databases("AdventureWorks"); 
//Note, to use the StringCollection type the System.Collections.Specialized system namespace must be included in the imports statements. 
StringCollection sc = default(StringCollection); 
//Run the CheckTables method and display the results from the returned StringCollection variable. 
sc = db.CheckTables(RepairType.None); 
int c = 0; 
for (c = 0; c <= sc.Count - 1; c++) { 
    Console.WriteLine(sc.Item(c)); 
} 
}