Backup SQL DB with Vbscript

using oSql it is easy enough,
http://www.howtogeek.com/50295/backup-your-sql-server-database-from-the-command-line/

"C:\Program Files\Microsoft SQL Server\90\Tools\Binn\osql.exe"
    -E -Q "BACKUP DATABASE mydatabase TO DISK='C:\tmp\db.bak' WITH FORMAT"

hard part if formatting dates in VBS..
ill dig up an old script.

try this...  runs but doesnt login correctly to my test server for some reason. can look again tomorrow if needed.

run from the C:\Program Files\Microsoft SQL Server\110\Tools\Binn folder or similar for your version of SQLServer.

cscript cscript c:\ee\sql_backup.vbs

Option Explicit

	Const ForReading = 1, ForWriting = 2, ForAppending = 8 
	dim oSQLs , oSQLDB , sResult, oFSO , oQres , sServer, oShell
	
	dim sMA_name , sUser,sPwd, sDBname , logFile

	dim sqlRun , i , Outputfile , sTmp, sDataLoc
	
	sServer="mySQL"
	sUser = "myuser"
	sPwd = "mypwd"
	sDBname = "mydb"
	
	logFile = "C:\ee\test1.txt"
	
	sMA_name = sDBname & "_now_date(" & year(now) & "," & month(now) & "," & day(now) & "," & hour(now) & "," & minute(now) & "," & second(now) & ").bak"
	

	wscript.echo "<" & sMA_name & ">"
	
	set oShell = Createobject("wscript.shell")
	set oFSO = CreateObject("Scripting.FileSystemObject")	


'Phase 0 : ==== setup logging

	
	dim f , oFS 

	if oFSO.FileExists(logFile) then
    		set f = oFSO.GetFile(logFile)
    
    		set oFS = f.OpenAsTextStream(ForAppending,0)
  	else
 
    		set oFS = oFSO.CreateTextFile(logFile, True)

	end if
	oFS.writeline "Start : " & now()

	
'Phase 4 : ======== detach the DB ============
	'on error resume next
	'on error goto 0	
	
	'C:\Program Files\Microsoft SQL Server\110\Tools\Binn
	Outputfile = "BACKUP DATABASE " & sDBname & " TO DISK='" & sMA_name & "' WITH FORMAT"
	
	SQLrun = "sqlCmd -U " & sUser & " -P " & sPwd & " -Q " & chr(34) & Outputfile & chr(34)
	wscript.echo "<" & sqlRun & ">"

	sResult = oShell.run (SQLRun, 2, True)
	
	if sResult=0 then
		oFS.WriteLine "4.1 bakup ok"
		wscript.echo "<ok"
	 else
		oFS.WriteLine "4.2 Error bakup"
		wscript.echo "<error"
	end if
	
	if Err.number > 0 then
		oFS.WriteLine "Error@4.1 : " & err.number &  Err.description
		oFS.WriteLine SQLrun
		wscript.quit
	end if
	
	
	Err.Clear
	on error resume next
	
		

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Hello,

I don't see in the code above where can I modify the ouput folder in which I want to place the backup file.

Thank you

ok.

it is the

sMA_name = sDBname & "_now_date("

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 line 17

sOutputFolder = "c:\tester\"   'note the trailing backslash
sMA_name = sOutputFolder  & sDBname & "_now_date(" 

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@robr : your script works, however I made some modifications in the sMA_name:

sMA_name = sDBname & "_now_date(" & year(now) & "," & month(now) & "," & day(now) & "," & hour(now) & "," & minute(now) & "," & second(now) & ").bak"

revised name :
sMA_name = sDBname & "_now_date_" & year(now) & "_" & month(now) & "_" & day(now) & "_" & hour(now) & "_" & minute(now) & "_" & second(now).bak"

Special characters such as "(", ")", ",", block the exports.

I would like to know if we can improve the script by enhancing the log. It should contains with the following options:

1-Error: The sOutputFolder doesn't exist
2-Error: Unable to access to the database sDBname
3-Error: Database name set up contains special character please check sMA_name

If the 3 option is not possible at least the two options will be ok for me.

1.

sOutputFolder = "c:\tester\"   'note the trailing backslash
sMA_name = sOutputFolder  & sDBname & "_now_date("

'.Phase0.
exists = fso.FolderExists(sOutputFolder )

if not exists then 
    		oFS.WriteLine "Error  Outputfolder not found : " & sOutputFolder
		wscript.quit
end if

if not IsValidFile(sDBname) then
    		oFS.WriteLine "Error  DBName has invalid characters : " & sDBname
		wscript.quit
end if

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2. Accessible DB ?  there used to be a feature called SQLDMO that I used for this in 2006, but now replaced by SMO. I haven't had cause to use this object at all but expect It could check if a db was online.  I dont know of other easy way at the moment.

3. DBName has special characters ?  Only way would be to try to write to a text file with the name of the output bak file and check for error ?  also see http://windowssecrets.com/forums/showthread.php/122981-Parsing-for-forbidden-characters-in-file-name

'HansV  @ WindowsSecrets 2009
Public Function IsValidFile(sFileName As String) As Boolean
  IsValidFile = Not (sFileName Like "*[/\|<>:*?""]*")
End Function

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update. a quick search seems to indicate Microsoft .. We have announced no plans to provide vbscript support for SMO.
As you have discovered, DMO continues to work well, but when it comes time to script to new 2005 features, it comes up short.  

so item 2 is not a simple process for me.

Hello robr,

Thank you for your comment, I will test your script tomorrow with the log proposal.

Hello Robber,

Thank you for this revised version it works!
I have some remarks and imporvement if you can do it (it would be great):
1-Is there a way to add a log case such as "sOutputFolder doesn't exist"?
2-If backup has been performed successfully can we add  Now & "Backup has been performed successfully".
3-Retention files, I will like to add a loop in which I remove all the files with .bak extension older than retentiondate, something like this

For Each File In Folder.Files 
        If If Right(LCase(File.Name), 3) = LCase("bak") and (DateDiff("d", File.DateLastModified, DateSysteme) > CInt(reteniondate)) then File.Delete()

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Thank you again for your help!

1. it is already there. line 44-48
2. its there partly. change line 69

	if sResult=0 then
		oFS.WriteLine Now & " = Backup has been performed successfully"
		wscript.echo "<ok"
	 else

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3. its something like that code u posted. try it out.

Cool, it works, thank you. Last question, is there a risk to launch this script if the db is used by the users?

dont think so as you are doing backup usingthe server processes

Ok, thank you!

I've requested that this question be closed as follows:

Accepted answer: 0 points for LD16's comment #a40626933

for the following reason:

Full code provided by the expert.

my response 40626953 should be selected as solution.

Done, sorry I thought it was done before.