Xp_cmdshell Not Unzipping Files

Feb 23, 2008

Hi,

I am trying ti unzip a backup file throguh xp_cmdshell. I am getting this error. It works when I tried manually unzipped.

NULL
C:WINDOWSsystem32>"C:Program Files (x86)WINZIPwzunzip.exe" -ybc -s0Ff$1tE
WinZip(R) Command Line Support Add-On Version 2.0 (Build 7041)
Copyright (c) WinZip International LLC 1991-2005 - All Rights Reserved
NULL
ERROR: missing name of Zip file
Program is terminating!
NULL

My batchfile: "C:Program Files (x86)WINZIPwzunzip.exe" -ybc -s0Ff$1tE E:OffsiteBackupsGLPArchival20080201.zip E:RestoreDatabaseVEENATest_unzipbackup

Mt stored procedure :

CREATE PROCEDURE USP_UNZIP
@ZIPFILE VARCHAR(2000),
@BAKPATH VARCHAR(1000)
AS
DECLARE @SQLSTATEMENT VARCHAR(2000)
SET @SQLSTATEMENT =''
SET @SQLSTATEMENT = 'C:UNZIP.BAT "'+@ZIPFILE+'" "'+@BAKPATH+'"'
PRINT 'SQL STATEMENT'
PRINT '-------------'
PRINT @SQLSTATEMENT
PRINT 'MESSAGE'
PRINT '-------'
EXEC MASTER..XP_CMDSHELL @SQLSTATEMENT

Thanks,
-G

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Hi all,

I tried to create a CSV file using Bulk Copy Program (BCP) and Stored Procedures: BCP executed from T-SQL using xp_cmdshell. I have the following sql code executed in my SQL Server Management Studio Express and error message:

--scBCPcLabResults.sql--

declare @sql varchar(8000)
select @sql = 'bcp ChDbLabResults out
c:cpChDbLabResults.txt -c -t, -T -S' + @@.SQLEXPRESS
exec master..xp_cmdshell @sql

Msg 137, Level 15, State 2, Line 3
Must declare the scalar variable "@@".

=========================================================================================
--scBCPcLabResults.sql--

declare @sql varchar(8000)
select @sql = 'bcp ChDbLabResults out
c:cpChDbLabResults.txt -c -t, -T -S' + @@SQLEXPRESS
exec master..xp_cmdshell @sql

Msg 137, Level 15, State 2, Line 3
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===================================================================

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I have the following code in an SSIS package and I get the following error:

Error: 0x0 at Unzip downloaded file, Boolean ReadGzipHeader(): Unable to decompress C:ETLPOSDataIngramWeeklyINVEN.zip; The magic number in GZip header is not correct. Make sure you are passing in a GZip stream.

Error: 0x4 at Unzip downloaded file: The Script returned a failure result.

Task failed: Unzip downloaded file

The zip file unzips perfectly using winzip utility, so that file is definitely not a problem here.

The code I am using in a script task is as follows:

' Microsoft SQL Server Integration Services Script Task

' Write scripts using Microsoft Visual Basic

' The ScriptMain class is the entry point of the Script Task.

Imports System

Imports System.Data

Imports System.Math

Imports Microsoft.SqlServer.Dts.Runtime

Imports System.IO

Imports System.Text

Imports System.IO.Compression

Public Class ScriptMain

' The execution engine calls this method when the task executes.

' To access the object model, use the Dts object. Connections, variables, events,

' and logging features are available as static members of the Dts class.

' Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.

'

' To open Code and Text Editor Help, press F1.

' To open Object Browser, press Ctrl+Alt+J.

Public Sub Main()

'

' Add your code here

'

Dts.TaskResult = Dts.Results.Success

Dim success As Boolean = True

Dim workFilePath As String

workFilePath = Dts.Variables("zipFilePath").Value.ToString()

If File.Exists(workFilePath) Then

If Not workFilePath.EndsWith(".zip") Then

Dts.Events.FireInformation(0, "", workFilePath + " is not compressed; skipping decompression", Nothing, -1, True)

Return

End If

Dim uncompressedFileName As String

Dim bytes(Int16.MaxValue) As Byte

Dim n As Integer = 1

Try

uncompressedFileName = Dts.Variables("unCompressedFileName").Value.ToString()

Dts.Events.FireInformation(0, "", "decompressing " + workFilePath + " to " + uncompressedFileName, Nothing, -1, True)

Using writer As New FileStream(uncompressedFileName, FileMode.Create)

Using compressedStream As Stream = File.Open(workFilePath, FileMode.Open, FileAccess.Read, FileShare.None)

Using unzipper As New GZipStream(compressedStream, CompressionMode.Decompress)

Do Until n = 0

n = unzipper.Read(bytes, 0, bytes.Length)

writer.Write(bytes, 0, n)

Loop

unzipper.Close()

End Using

compressedStream.Close()

End Using

writer.Close()

End Using

Catch ex As Exception

Dts.Events.FireError(0, ex.TargetSite().ToString(), "Unable to decompress " + workFilePath + "; " + ex.Message, Nothing, -1)

success = False

Finally

If success = False And File.Exists(uncompressedFileName) Then

Dts.TaskResult = Dts.Results.Failure

File.Delete(uncompressedFileName)

End If

End Try

Else

Dts.Events.FireError(0, "", workFilePath + " does not exist", Nothing, -1)

Dts.TaskResult = Dts.Results.Failure

Return

End If

End Sub

End Class

Instead of the GZipStream do I have to use some other stream class for a zip file. Please let me know.

Thanks,

Monisha

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Apr 24, 2008

In the first step of my SSIS package I need to get files from FTP and dump it/them in a local directory, but it's more than that, the logic is like this:
1. If no file(s) found, stop executing and send email saying no file(s) found;
2. If file(s) found, then compare it/them with existing files in our archive folder; if file(s) already exist in archive folder, stop executing and send email saying file(s) already existed, if file(s) not in archive folder yet, then transfer it/them to the local directory for processing.

I know i have to use a script task to do this and i did some research and found examples for each of the above 2 steps and not both combined, so that's why I need some help here to get the logic incorporated right.

Thanks for the help in advance and i apologize for the long lines of code!

example for step 1:
----------------------------------------------------------------------------------------------------------

' Microsoft SQL Server Integration Services Script Task
' Write scripts using Microsoft Visual Basic
' The ScriptMain class is the entry point of the Script Task.

Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Imports Microsoft.VisualBasic.FileIO.FileSystem
Imports System.IO.FileSystemInfo

Public Class ScriptMain

' The execution engine calls this method when the task executes.
' To access the object model, use the Dts object. Connections, variables, events,
' and logging features are available as static members of the Dts class.
' Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.
'
' To open Code and Text Editor Help, press F1.
' To open Object Browser, press Ctrl+Alt+J.

Public Sub Main()

Dim cDataFileName As String
Dim cFileType As String
Dim cFileFlgVar As String
WriteVariable("SCFileFlg", False)
WriteVariable("OOFileFlg", False)
WriteVariable("INFileFlg", False)
WriteVariable("IAFileFlg", False)
WriteVariable("RCFileFlg", False)
cDataFileName = ReadVariable("DataFileName").ToString
cFileType = Left(Right(cDataFileName, 4), 2)
cFileFlgVar = cFileType.ToUpper + "FileFlg"
WriteVariable(cFileFlgVar, True)
Dts.TaskResult = Dts.Results.Success
End Sub
Private Sub WriteVariable(ByVal varName As String, ByVal varValue As Object)
Try
Dim vars As Variables
Dts.VariableDispenser.LockForWrite(varName)
Dts.VariableDispenser.GetVariables(vars)
Try
vars(varName).Value = varValue
Catch ex As Exception
Throw ex
Finally
vars.Unlock()
End Try
Catch ex As Exception
Throw ex
End Try
End Sub
Private Function ReadVariable(ByVal varName As String) As Object
Dim result As Object
Try
Dim vars As Variables
Dts.VariableDispenser.LockForRead(varName)
Dts.VariableDispenser.GetVariables(vars)
Try
result = vars(varName).Value
Catch ex As Exception
Throw ex
Finally
vars.Unlock()
End Try
Catch ex As Exception
Throw ex
End Try
Return result
End Function
End Class

example for step 2:
-------------------------------------------------------------------------------------------------------

' Microsoft SQL Server Integration Services Script Task

' Write scripts using Microsoft Visual Basic

' The ScriptMain class is the entry point of the Script Task.

Imports System

Imports System.Data

Imports System.Math

Imports Microsoft.SqlServer.Dts.Runtime

Public Class ScriptMain

' The execution engine calls this method when the task executes.

' To access the object model, use the Dts object. Connections, variables, events,

' and logging features are available as static members of the Dts class.

' Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.

'

' To open Code and Text Editor Help, press F1.

' To open Object Browser, press Ctrl+Alt+J.

Public Sub Main()

Try

'Create the connection to the ftp server

Dim cm As ConnectionManager = Dts.Connections.Add("FTP")

'Set the properties like username & password

cm.Properties("ServerName").SetValue(cm, "ftp.name.com")

cm.Properties("ServerUserName").SetValue(cm, "username")

cm.Properties("ServerPassword").SetValue(cm, "password")

cm.Properties("ServerPort").SetValue(cm, "21")

cm.Properties("Timeout").SetValue(cm, "0") 'The 0 setting will make it not timeout

cm.Properties("ChunkSize").SetValue(cm, "1000") '1000 kb

cm.Properties("Retries").SetValue(cm, "1")

'create the FTP object that sends the files and pass it the connection created above.

Dim ftp As FtpClientConnection = New FtpClientConnection(cm.AcquireConnection(Nothing))

'Connects to the ftp server

ftp.Connect()

'ftp.SetWorkingDirectory("..")

ftp.SetWorkingDirectory("directoryname")

Dim folderNames() As String

Dim fileNames() As String

ftp.GetListing(folderNames, fileNames)

Dim maxname As String = ""

For Each filename As String In fileNames

' whatever operation you need to do to find the correct file...

Next

Dim files(0) As String

files(0) = maxname

ftp.ReceiveFiles(files, "C: emp", True, True)

' Close the ftp connection

ftp.Close()

'Set the filename you retreive for use in data flow

Dts.Variables.Item("FILENAME").Value = maxname

Catch ex As Exception

Dts.TaskResult = Dts.Results.Failure

End Try

Dts.TaskResult = Dts.Results.Success

End Sub

End Class

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Hello,

I am trying to create a directory containing the date and then copy all the files in the current directory to it.

If I run the T-SQL script found below within Query Analyser it works fine (directory is created and files are copied in to it).

But if I run it as SQL task within DTS, only the directory is created. The files are not copied in to it!?!

I thought it maybe a permissions problem, but the SQL Server/Agent account is a local administrator and has sysadmin role with SQL Server.

I would be grateful of any assistance in this problem.

Thanks in advance,
Chris.

SQL:

declare @directoryname varchar(200)
declare @doscmd varchar(255)

select @directoryname = 'e:Audit_table_archive' + rtrim(cast(day(getdate())as char)) + rtrim(cast(month(getdate())as char)) + rtrim(cast(year(getdate())as char))

select @doscmd = 'mkdir ' + @directoryname

exec master..xp_cmdshell @doscmd

select @doscmd = 'copy e:Audit_table_archive*.* e:Audit_table_archive' + rtrim(cast(day(getdate())as char)) + rtrim(cast(month(getdate())as char)) + rtrim(cast(year(getdate())as char)) + '*.*'

exec master..xp_cmdshell @doscmd

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