Question

我正在使用c＃以编程方式备份某些sql server数据库。我认为Microsoft.SqlServer.Management.Smo和其他一些库是为此目的而制作的。现在我可以备份数据库了。非常好。这是代码：

var server = new Server(@"" + InstanceName);
var backuper = new Backup();
try
{
    backuper.Action = BackupActionType.Database;
    backuper.Database = DbName;
    backuper.Devices.AddDevice(DbName + ".bak", DeviceType.File);
    backuper.BackupSetName = DbName + " - Yedek";
    backuper.BackupSetDescription = "Açık Bulut Depo - " + DbName + " - Yedek";
    backuper.ExpirationDate = DateTime.Now.AddYears(20);
    server.ConnectionContext.Connect();
    backuper.SqlBackup(server); 
}
catch(Exception ex){//..}

我的问题是如何获取数据库备份的设备路径？我知道我可以指定自己的路径：

backuper.Devices.AddDevice("C:\SOMEPATH\" + DbName + ".bak", DeviceType.File);

然后我实际上可以知道它在哪里，但我想要做的是将其备份到默认位置并获取其路径。请帮帮我。

Answer 1

在这篇博客文章中，您可以使用以下功能：

http://www.mssqltips.com/sqlservertip/1966/function-to-return-default-sql-server-backup-folder/

CREATE FUNCTION dbo.fn_SQLServerBackupDir() 
RETURNS NVARCHAR(4000) 
 AS 
BEGIN 

 DECLARE @path NVARCHAR(4000) 

EXEC master.dbo.xp_instance_regread 
        N'HKEY_LOCAL_MACHINE', 
        N'Software\Microsoft\MSSQLServer\MSSQLServer',N'BackupDirectory', 
        @path OUTPUT,  
        'no_output' 
RETURN @path 
END;

Answer 2

正确回答此副本可在此处找到：https://stackoverflow.com/a/8791588/331889

Server.BackupDirectory;

鉴于您已经在使用SMO对象，它应该是最简单的答案。

Answer 3

我通常在backuper.SqlBackup(server);之后立即执行以下存储过程返回最新的备份目标路径。我使用这种方法是因为使用SMO，我给应用程序用户提供了备份到任何位置/驱动器甚至USB磁盘的灵活性。因此，用户可能决定不备份到默认备份位置，并且我希望在备份过程成功完成后返回该位置。

  USE [YouDatabaseNameHere]
    GO

    SET ANSI_NULLS ON
    GO

    SET QUOTED_IDENTIFIER ON
    GO

    -- =============================================
    -- Author:      SQL.NET Warrior
    -- =============================================
    CREATE PROCEDURE [dbo].[GetBackupHistory]
    AS
    BEGIN
        SET NOCOUNT ON;
        DECLARE @SQLVer SQL_VARIANT
            ,@DBName VARCHAR(128)
            ,@NumDays   SMALLINT
            ,@SQL       VARCHAR(1024)
            ,@WhereClause   VARCHAR(256)

    SET @DBName = Null
    ;
    SET @NumDays = 14
    ;
    SET @SQLVer = CONVERT(INTEGER, PARSENAME(CONVERT(VARCHAR(20),SERVERPROPERTY('ProductVersion')),4));

    SET @WhereClause = 'WHERE a.type IN (''D'',''I'')
            And a.backup_start_date > GETDATE()- ' + CAST(@NumDays AS VARCHAR)+''
    IF @DBName IS NOT NULL
    BEGIN
        SET @WhereClause = @WhereClause + '
            AND a.database_name = '''+ @DBName +''''
    END

    SET @SQL = '
    SELECT TOP 1 a.database_name,a.backup_start_date
            ,b.physical_device_name AS BackupPath
            ,a.position
            ,a.type
            ,a.backup_size/1024/1024 AS BackupSizeMB
            ,' + CASE 
                WHEN @SQLVer < 10 
                    THEN '0'
                    ELSE 'a.compressed_backup_size/1024/1024'
                END + ' AS CompressedBackMB
        FROM msdb.dbo.backupset a
            INNER JOIN msdb.dbo.backupmediafamily b
                ON a.media_set_id = b.media_set_id
        ' + @WhereClause + '
        ORDER BY a.backup_start_date DESC;';
         --PRINT @SQL
     EXECUTE (@SQL);
    END;



    GO

获取sql server prgrammatiacally的默认备份路径

3 个答案: