Microsoft SQL Server数据库备份和恢复的类(转)
C#+Sql数据库备份
1.在项目中添加SQLDmo dll文件引用（SQLDMO(SQL Distributed Management Objects，SQL分布式管理对象)）
2在相应页面加using SQLDMO引用
3.下面是用C#语言书写的用于Microsoft SQL Server数据库备份和恢复的类：
using System;
namespace DbService
{
/// <summary>
/// DbOper类,主要实现对Microsoft SQL Server数据库的备份和恢复
/// </summary>
public sealed class DbOper
{
/// <summary>
/// DbOper类的构造函数
/// </summary>
private DbOper()
{
}
/// <summary>
/// 数据库备份
/// </summary>
public static void DbBackup()
{
try
{
SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
oSQLServer.LoginSecure = false;
oSQLServer.Connect("localhost", "sa", "1234");
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
oBackup.Database = "Northwind";
oBackup.Files = @"d:\\Northwind.bak";
oBackup.BackupSetName = "Northwind";
oBackup.BackupSetDescription = "数据库备份";
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);
}
catch
{
throw;
}
}
/// <summary>
/// 数据库恢复
/// </summary>
public static void DbRestore()
{
try
{
SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
oSQLServer.LoginSecure = false;
oSQLServer.Connect("localhost", "sa", "1234");
oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = "Northwind";
oRestore.Files = @"d:\\Northwind.bak";
oRestore.FileNumber = 1;
oRestore.ReplaceDatabase = true;
oRestore.SQLRestore(oSQLServer);
}
catch
{
throw;
}
}
}
}
参见在C#中运用SQLDMO备份和恢复Microsoft SQL Server数据库
http://dev.csdn.net/develop/article/28/28564.shtm
当不使用要恢复的数据库时以上方法可行，但当你使用了数据库时就必须杀死该进程
代码如下：
/// <summary>
/// 还原数据库函数
/// </summary>
/// <param name="strDbName">数据库名</param>
/// <param name="strFileName">数据库备份文件的完整路径名</param>
/// <returns></returns>
public bool RestoreDB(string strDbName,string strFileName)
{
//PBar = pgbMain ;
SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
try
{
//服务器名，数据库用户名，数据库用户名密码
svr.Connect("localhost","sa","hai") ;
SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ;
int iColPIDNum = -1 ;
int iColDbName = -1 ;
for(int i=1;i<=qr.Columns;i++)
{
string strName = qr.get_ColumnName(i) ;
if (strName.ToUpper().Trim() == "SPID")
{
iColPIDNum = i ;
}
else if (strName.ToUpper().Trim() == "DBNAME")
{
iColDbName = i ;
}
if (iColPIDNum != -1 && iColDbName != -1)
break ;
}
//杀死使用strDbName数据库的进程
for(int i=1;i<=qr.Rows;i++)
{
int lPID = qr.GetColumnLong(i,iColPIDNum) ;
string strDBName = qr.GetColumnString(i,iColDbName) ;
if (strDBName.ToUpper() == strDbName.ToUpper())
{
svr.KillProcess(lPID) ;
}
}
SQLDMO.Restore res = new SQLDMO.RestoreClass() ;
res.Action = 0 ;
res.Files = strFileName ;
res.Database = strDbName ;
res.ReplaceDatabase = true ;
res.SQLRestore(svr) ;
return true ;
}
catch
{
return false;
}
finally
{
svr.DisConnect() ;
}
}
你就可以通过用户设置的时间来备份数据库了,可以用定时器实现
或是调用存储过程：
方法为：
还原整个数据库：
RESTORE DATABASE { database_name | @database_name_var }
[ FROM < backup_device > [ ,...n ] ]
[ WITH
[ RESTRICTED_USER ]
[ [ , ] FILE = { file_number | @file_number } ]
[ [ , ] PASSWORD = { password | @password_variable } ]
[ [ , ] MEDIANAME = { media_name | @media_name_variable } ]
[ [ , ] MEDIAPASSWORD = { mediapassword | @mediapassword_variable } ]
[ [ , ] MOVE 'logical_file_name' TO 'operating_system_file_name' ]
[ ,...n ]
[ [ , ] KEEP_REPLICATION ]
[ [ , ] { NORECOVERY | RECOVERY | STANDBY = undo_file_name } ]
[ [ , ] { NOREWIND | REWIND } ]
[ [ , ] { NOUNLOAD | UNLOAD } ]
[ [ , ] REPLACE ]
[ [ , ] RESTART ]
[ [ , ] STATS [ = percentage ] ]
]
还原数据库的部分内容：
RESTORE DATABASE { database_name | @database_name_var }
< file_or_filegroup > [ ,...n ]
[ FROM < backup_device > [ ,...n ] ]
[ WITH
{ PARTIAL }
[ [ , ] FILE = { file_number | @file_number } ]
[ [ , ] PASSWORD = { password | @password_variable } ]
[ [ , ] MEDIANAME = { media_name | @media_name_variable } ]
[ [ , ] MEDIAPASSWORD = { mediapassword | @mediapassword_variable } ]
[ [ , ] MOVE 'logical_file_name' TO 'operating_system_file_name' ]
[ ,...n ]
[ [ , ] NORECOVERY ]
[ [ , ] { NOREWIND | REWIND } ]
[ [ , ] { NOUNLOAD | UNLOAD } ]
[ [ , ] REPLACE ]
[ [ , ] RESTRICTED_USER ]
[ [ , ] RESTART ]
[ [ , ] STATS [ = percentage ] ]
]
还原特定的文件或文件组：
RESTORE DATABASE { database_name | @database_name_var }
< file_or_filegroup > [ ,...n ]
[ FROM < backup_device > [ ,...n ] ]
[ WITH
[ RESTRICTED_USER ]
[ [ , ] FILE = { file_number | @file_number } ]
[ [ , ] PASSWORD = { password | @password_variable } ]
[ [ , ] MEDIANAME = { media_name | @media_name_variable } ]
[ [ , ] MEDIAPASSWORD = { mediapassword | @mediapassword_variable } ]
[ [ , ] MOVE 'logical_file_name' TO 'operating_system_file_name' ]
[ ,...n ]
[ [ , ] NORECOVERY ]
[ [ , ] { NOREWIND | REWIND } ]
[ [ , ] { NOUNLOAD | UNLOAD } ]
[ [ , ] REPLACE ]
[ [ , ] RESTART ]
[ [ , ] STATS [ = percentage ] ]
]
还原事务日志：
RESTORE LOG { database_name | @database_name_var }
[ FROM < backup_device > [ ,...n ] ]
[ WITH
[ RESTRICTED_USER ]
[ [ , ] FILE = { file_number | @file_number } ]
[ [ , ] PASSWORD = { password | @password_variable } ]
[ [ , ] MOVE 'logical_file_name' TO 'operating_system_file_name' ]
[ ,...n ]
[ [ , ] MEDIANAME = { media_name | @media_name_variable } ]
[ [ , ] MEDIAPASSWORD = { mediapassword | @mediapassword_variable } ]
[ [ , ] KEEP_REPLICATION ]
[ [ , ] { NORECOVERY | RECOVERY | STANDBY = undo_file_name } ]
[ [ , ] { NOREWIND | REWIND } ]
[ [ , ] { NOUNLOAD | UNLOAD } ]
[ [ , ] RESTART ]
[ [ , ] STATS [= percentage ] ]
[ [ , ] STOPAT = { date_time | @date_time_var }
| [ , ] STOPATMARK = 'mark_name' [ AFTER datetime ]
| [ , ] STOPBEFOREMARK = 'mark_name' [ AFTER datetime ]
]
]
< backup_device > ::=
{
{ 'logical_backup_device_name' | @logical_backup_device_name_var }
| { DISK | TAPE } =
{ 'physical_backup_device_name' | @physical_backup_device_name_var }
}
< file_or_filegroup > ::=
{
FILE = { logical_file_name | @logical_file_name_var }
|
FILEGROUP = { logical_filegroup_name | @logical_filegroup_name_var}
}
