"exclusive access could not be obtained.." while restoring

Hello
I am using MSDE with my application and providing our users UI to backup/restore the database. My app has just 1 database and 1 login mapped to 1 user (MyAppUser). Backup and restore functionality is using inline sql commands. Backup works fine with something like this
Private Sub Backup(
Dim cn As New SqlConnection(MyConnectionString
Tr
cn.Open(
Dim cm As New SqlComman
With c
.Connection = c
.CommandType = CommandType.Tex
.CommandText = "BACKUP DATABASE MyDB TO DISK = 'D:\Backup\a.bak' WITH INIT
.ExecuteNonQuery(
End Wit
MsgBox("Database backed up successfully!"
Catch ex As Exceptio
MsgBox(ex.Message
Finall
cn.Close(
End Tr
End Su
but when I do restore using something like this
Private Sub Restore(
Dim cn As New SqlConnection(MyConnectionString
Tr
cn.Open(
Dim cm As New SqlComman
With c
.Connection = c
.CommandType = CommandType.Tex
.CommandText = "RESTORE DATABASE MyDB FROM DISK = 'D:\Backup\a.bak' WITH RECOVERY
.ExecuteNonQuery(
End Wit
MsgBox("Database restored successfully!"
Catch ex As Exceptio
MsgBox(ex.Message
Finall
cn.Close(
End Tr
End Su
I get the "exclusive access could not be obtained.. .. database is in use" error message
I did "Use Master" in query analyser and ran the same restore sql command and it worked fine. I do not know how to use "Use master" here in ado.net. I know it has something to do with sp_Who but not sure how the syntax will fit in.
Note MyConnectionString is something like
"data source=(local)\MyCompany;initial catalog=MyDB;User ID = MyAppUser ; Password = MyPassword"
Please help. What should I do so that this works in my vb.net app.You can use cn.ChangeDatabase("master") to change database
If you are restoring over an existing database you will also need specify
WITH REPLACE.
--
HTH
Jasper Smith (SQL Server MVP)
I support PASS - the definitive, global
community for SQL Server professionals -
http://www.sqlpass.org
"newbie" <anonymous@.discussions.microsoft.com> wrote in message
news:C800D8D0-0D15-4352-8545-9CA47C9B4710@.microsoft.com...
> Hello,
> I am using MSDE with my application and providing our users UI to
backup/restore the database. My app has just 1 database and 1 login mapped
to 1 user (MyAppUser). Backup and restore functionality is using inline sql
commands. Backup works fine with something like this:
> Private Sub Backup()
> Dim cn As New SqlConnection(MyConnectionString)
> Try
> cn.Open()
> Dim cm As New SqlCommand
> With cm
> .Connection = cn
> .CommandType = CommandType.Text
> .CommandText = "BACKUP DATABASE MyDB TO DISK ='D:\Backup\a.bak' WITH INIT"
> .ExecuteNonQuery()
> End With
> MsgBox("Database backed up successfully!")
> Catch ex As Exception
> MsgBox(ex.Message)
> Finally
> cn.Close()
> End Try
> End Sub
> but when I do restore using something like this:
> Private Sub Restore()
> Dim cn As New SqlConnection(MyConnectionString)
> Try
> cn.Open()
> Dim cm As New SqlCommand
> With cm
> .Connection = cn
> .CommandType = CommandType.Text
> .CommandText = "RESTORE DATABASE MyDB FROM DISK ='D:\Backup\a.bak' WITH RECOVERY"
> .ExecuteNonQuery()
> End With
> MsgBox("Database restored successfully!")
> Catch ex As Exception
> MsgBox(ex.Message)
> Finally
> cn.Close()
> End Try
> End Sub
> I get the "exclusive access could not be obtained.. .. database is in use"
error message.
> I did "Use Master" in query analyser and ran the same restore sql command
and it worked fine. I do not know how to use "Use master" here in ado.net.
I know it has something to do with sp_Who but not sure how the syntax will
fit in.
> Note MyConnectionString is something like:
> "data source=(local)\MyCompany;initial catalog=MyDB;User ID = MyAppUser ;
Password = MyPassword"
> Please help. What should I do so that this works in my vb.net app.