无法在事务中执行备份或恢复操作。 BACKUP DATABASE 异常终止

Question

我正在尝试在由EF6 建模的应用程序中执行backUp 和restore 命令。

为了我的备份，我创建了一个Sp，您可以在此处看到：

CREATE PROCEDURE GetBackUp
    -- Add the parameters for the stored procedure here
    @address nvarchar(max)
AS
BEGIN
    BACKUP DATABASE [db-invoice-169] to DISK=@address
END
GO

在我的应用程序中，我称之为Sp

 private void Backup_Click(object sender, EventArgs e)
        {
            SaveFileDialog sfd = new SaveFileDialog();
            string str_filename = string.Empty;
            sfd.FileName = "backup_database_" + DateTime.Now.ToShortDateString().Replace("/", "_");
            sfd.Filter = @"backup files(*.bak)|*.bak|all files(*.*)|*.*";
            sfd.FilterIndex = 1;
            sfd.OverwritePrompt = true;
            sfd.Title = "***save backup files***";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                str_filename = sfd.FileName;
                backup(str_filename);
            }
        }
        private void backup(string str_filename)
        {
            try
            {
                this.Cursor = Cursors.WaitCursor;
                db.Database.ExecuteSqlCommand(@"EXEC [dbo].[back_up] @address = N'"+str_filename+"'");
                this.Cursor = Cursors.Default;
                MessageBox.Show("عملیات پشتیبان گیری موفقیت آمیز بود");
            }
            catch (Exception ex)
            {
                MessageBox.Show("عملیات پشتیبان گیری موفقیت آمیز نبود |" + ex.Message);
            }

        }

但是我收到了这个错误：

无法在事务中执行备份或恢复操作。 BACKUP DATABASE 异常终止。

Answer 1

尝试更改此行：

db.Database.ExecuteSqlCommand(@"EXEC [dbo].[back_up] @address = N'"+str_filename+"'");

到：

db.Database.ExecuteSqlCommand(TransactionalBehavior.DoNotEnsureTransaction, @"EXEC [dbo].[back_up] @address = N'"+str_filename+"'");

阿布拉尔

Answer 2

在备份代码之前试试这个

using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Suppress))
{
    // Add you backup query or your stuff
    ts.Complete();
}

Answer 3

根据 abrar 的回答，我在 SQLlocaldb 和实体框架中的还原过程中遇到此错误：

RESTORE cannot process database 'database' because it is in use by this session. It is recommended that the master database be used when performing this operation.
RESTORE DATABASE is terminating abnormally.

解决办法：

db.Database.ExecuteSqlCommand(TransactionalBehavior.DoNotEnsureTransaction, @"USE master EXEC [dbo].[back_up] @address = N'"+str_filename+"'")