sql server客户端损坏如何备份数据

发布网友 发布时间：2022-05-05 12:21

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热心网友 时间：2022-06-27 12:23

手头上只有C#的代码，不知道对你有没有帮助
远程备份要注意权限的问题，普通的访问帐户没有备份和还原的权限，最好用sa的帐户，并且程序访问的帐户必须添加到远程机器的系统内
你说的远程备份到本地是不可能的，你只有开放远程某个文件夹加入你的特殊访问帐户权限
最好直接用远程桌面，这样最方便

方法一（不使用SQLDMO）：

///
///备份方法
///
SqlConnection conn = new SqlConnection("Server=.;Database=master;User ID=sa;Password=sa;");

SqlCommand cmdBK = new SqlCommand();
cmdBK.CommandType = CommandType.Text;
cmdBK.Connection = conn;
cmdBK.CommandText = @"backup database test to disk='C:\ba' with init";

try
{
conn.Open();
cmdBK.ExecuteNonQuery();
MessageBox.Show("Backup successed.");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
conn.Close();
conn.Dispose();
}

///
///还原方法
///
SqlConnection conn = new SqlConnection("Server=.;Database=master;User ID=sa;Password=sa;Trusted_Connection=False");
conn.Open();

//KILL DataBase Process
SqlCommand cmd = new SqlCommand("SELECT spid FROM sysprocesses ,sysdatabases WHERE sysprocesses.dbid=sysdatabases.dbid AND sysdatabases.Name='test'", conn);
SqlDataReader dr;
dr = cmd.ExecuteReader();
ArrayList list = new ArrayList();
while(dr.Read())
{
list.Add(dr.GetInt16(0));
}
dr.Close();
for(int i = 0; i < list.Count; i++)
{
cmd = new SqlCommand(string.Format("KILL ", list[i]), conn);
cmd.ExecuteNonQuery();
}

SqlCommand cmdRT = new SqlCommand();
cmdRT.CommandType = CommandType.Text;
cmdRT.Connection = conn;
cmdRT.CommandText = @"restore database test from disk='C:\ba'";

try
{
cmdRT.ExecuteNonQuery();
MessageBox.Show("Restore successed.");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
conn.Close();
}

方法二（使用SQLDMO）：

///
///备份方法
///
SQLDMO.Backup backup = new SQLDMO.BackupClass();
SQLDMO.SQLServer server = new SQLDMO.SQLServerClass();
//显示进度条
SQLDMO.BackupSink_PercentCompleteEventHandler progress = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
backup.PercentComplete += progress;

try
{
server.LoginSecure = false;
server.Connect(".", "sa", "sa");
backup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
backup.Database = "test";
backup.Files = @"D:\test\myProg\backupTest";
backup.BackupSetName = "test";
backup.BackupSetDescription = "Backup the database of test";
backup.Initialize = true;
backup.SQLBackup(server);
MessageBox.Show("Backup successed.");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
server.DisConnect();
}
this.pbDB.Value = 0;

///
///还原方法
///
SQLDMO.Restore restore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer server = new SQLDMO.SQLServerClass();
//显示进度条
SQLDMO.RestoreSink_PercentCompleteEventHandler progress = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
restore.PercentComplete += progress;

//KILL DataBase Process
SqlConnection conn = new SqlConnection("Server=.;Database=master;User ID=sa;Password=sa;Trusted_Connection=False");
conn.Open();
SqlCommand cmd = new SqlCommand("SELECT spid FROM sysprocesses ,sysdatabases WHERE sysprocesses.dbid=sysdatabases.dbid AND sysdatabases.Name='test'", conn);
SqlDataReader dr;
dr = cmd.ExecuteReader();
ArrayList list = new ArrayList();
while(dr.Read())
{
list.Add(dr.GetInt16(0));
}
dr.Close();
for(int i = 0; i < list.Count; i++)
{
cmd = new SqlCommand(string.Format("KILL ", list[i]), conn);
cmd.ExecuteNonQuery();
}
conn.Close();

try
{
server.LoginSecure = false;
server.Connect(".", "sa", "sa");
restore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
restore.Database = "test";
restore.Files = @"D:\test\myProg\backupTest";
restore.FileNumber = 1;
restore.ReplaceDatabase = true;
restore.SQLRestore(server);
MessageBox.Show("Restore successed.");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
server.DisConnect();
}
this.pbDB.Value = 0;

热心网友 时间：2022-06-27 12:23

你应该是把系统数据库覆盖了，再重新装吧，装完只要附加非系统数据库就行了。

热心网友 时间：2022-06-27 12:24

在sqlserver启动年的情况把原本的data文件附加一下数据库就行了，直接覆盖过去是不行的