DB Connection Lockout Other DB Connections

Mar 7, 2007

I have a series of external database connections that I run in Excel, connecting to a Server based DB and running some SELECT statements. (ingres). We may have up to dozen of client machines accessing the ingres DB at any time. All is good at this point but when excel goes to INSERT some calculated data back to the main database, it appears that my Excel spreadsheet connection is locking the database when it connects, keeping other people from using their client connections.

first question: Does anyone know if the connection excel uses to run sql statements via external database connection will indeed prevent other users from connecting to the main database?

second question: if so, is there a setting or something that can make excel more "passive"?

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Can a group of cells or more be locked once they reached or passed a certain time frame and date that follows your PC clock, and can it be set to a time that you decide on in a macro. The other question, Can this lockout macro clock that was set to a pacific time frame can it stop people from altering their PC clock in anyway for e.g.; 'I tried to turn back the time but I got this message - "This cell is Locked due to your lateness".

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The part of the macro which imports the data was simply recorded and very slightly modified. I've included it below... but what I'd like to do once the data has been imported is delete the connection.

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I currently have a spreadsheet that has data connections to a file on a shared drive. On opening the file I have it update the data connections so that the data needed is always correct. The file I use is to be distributed out to work colleagues to use and on testing it works really well apart from if you have the file open and somebody tried to open the original file where the data is pulled from for the connection. It says it currently in use by 'another user'.

Is there any code to add to workbook_open that will close/disable the data connection links once the data has been updated? The code I currently have is this:

VB:
Private Sub Workbook_Open()
ActiveWorkbook.RefreshAll
Application.Wait Now + TimeValue("00:00:02")
Userform1.Show
End If
End Sub

What this basically does is gives it time to refresh the data connections and show a progress userform. The only thing is the connections stay live and I don't want that as the connection file is then locked. I'm hoping its something simple like ActiveWorkbook.CloseDataConnection added in after the userform has been shown (or something along them lines ). Also the data connections would have to be able to reconnect on open so that they can refresh again.

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I have a workbook with multiple worksheets and over 25 Data Connections using MS Query to connect to different tables in an SQL Server database.

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I have been unable to find a way to successfully edit the data connections in Excel 2003. A web search produced one potential option. However, that did not work for me very well. Thought the code is designed to cycle through all tablequeries and pivotqueries, the change is only made to one of the data connections. Here is the option I tried:

http://support.microsoft.com/kb/816562

Note that it is very easy to edit data connections in Excel 2007. So I also tried opening the .xls file in Excel 2007. I used the Data Connections button under the Data tab in the ribbon and was successful in editing the connections to point to the new server. However, the graphs used to display the queried data behave weird. The "format axis" settings and chart sizes change. In general, default display settings for charts seems to differ between Excel 2003 and 2007.

I used Excel 2007 to only edit the data connections and saved the workbook in the original .xls format

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I have a connection to an SQL database using microsoft query.

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Jun 2, 2014

My issue is we have a remote office, using an access DB which links to an Excel file. We sometimes send the files to other people to make changes, but the link is then broken (it was a network location).

You can just change it manually, or accept the many prompts that come up, but it needs doing at each end, each time.
I thought I'd do a routine to change the connection paths, this is what I have...

Code:
Sub alan()
Dim i As Long
Dim cnt As Long
Dim modtext As String, modfile As String
Dim modrange As String, OldPath As String, NewPath As String

OldPath = "\192.168.1.100MultimediaCommissioning Folder"
NewPath = "C:matts"

[Code] ...

I added the sourcedatafile part to the routine afterwards, because the connection string part worked fine. But I now get Run-time error '1004' Application-defined or object-defined error...

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Apr 26, 2013

While making my first foray into defining external connections (to an Oracle database) I ended up with an "Existing Connection" that reports "File could not be opened. It is either damaged or the file format is not valid. Try opening the application that created it and saving to a new file." Followed by "Unable to open or read this connection file. Either the file has been damaged or the file format is not valid."

Ok, fine. So how do I delete it? There seems to be no option for that in the "Existing Connections" dialog. A search for a *.odc or *.udcx file doesn't turn up anything with the name of this connection. A search of the registry doesn't turn up anything.

extdata.jpg

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I've tried going to C:Program FilesMicrosoft OfficeOffice14QUERIES but no such queries exist.

Is there any way to clear my list ?

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The issue is the 1000+ connections on this file make it next to impossible to operate

I cannot recreate the file

macro to delete all connections in all sheets in a given work book.

[URL]

Macro used :

Sub Dump()
Dim myURL
Sheets("Sheet1").Select
ActiveCell.Offset(1, 0).Select
myURL = Worksheets("Sheet1").Range(ActiveCell.Address).Text
Sheets("Sheet2").Select
Range("A65536").Select

[code].....

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The trick is that it will have to be created as Add-On so that it can be used in any Excel spreadsheets. The second trick is that I cannot have VBA to make any internal connections to other workbooks or applications.

So the only thing that I can come up with would be to write a VBA code that would include all values and currency rates in it. The structure that I have in mind would be something like:

Code:
Function Fx(Vl As String, Dte As Date)
Dim Rte As String
If Vl = "EUR" And Dte = "12/31/2011" Then
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ElseIf Vl = "EUR" And Dte = "12/31/2010" Then
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[code]....

The above code does not work!There will be at least twenty different currencies and at least 15 periods.

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The following code deletes a specific connection in a workbook:-

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Code:
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Sheets("Data").Copy
Application.DisplayAlerts = False
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Using the code below to open the workbook, no such prompts are given. Is the code overriding the prompts and automatically refreshing the data without password? [Given nature of data, visual validation of refresh is not possible]

If not, how can we code a data refresh through showcase query with user/pw req's?

[Code] ......

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I've tried to remove connections after saves and have been unsuccessful.

HTML Code:
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' ActiveWorkbook.Connections.Item(1).Delete
' Next i
' Else
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'
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HTML Code:
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For Each nm In ActiveWorkbook.Names
nm.Delete
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I've tried both of these and the Excel file is still attached with XML to the query table. I get an error message saying the format is different then if you click okay it shows its connected to the database still. Is there an aggressive command that will severe all connections before saving? What commands to run to stop this connection after save to another workbook?

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I have also got other define names, worksheets and formulas that rely on these product database worksheets.

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When I click data --> connections its empty.

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When debugging the error goes to:

How can I place in an error management instead of the code just getting blocked out.

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My code is below.

Option Explicit 'requires variable declaration
'declare global connection
Public cn As ADODB.Connection

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'open db connection
'this happens on workbook open
If cn Is Nothing Then
Set cn = New ADODB.Connection
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End If
End Sub

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i have a ADO Connection. My query is like this:

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Why?
Cause i work with my workbook open (not that from connection) and i have something like 55,000 rows to change value. A complex range:

D2,D11:D12,D14:D20,D32,D42,D52,D62,D72,D82,D92,D101:D102,D104:D112...
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Imagine:

For Each rng In rng
rng.Value = objRecordset(0)
objRecordset.MoveNext
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Sub WebQuery()
Dim strSearch As String
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With ActiveSheet.QueryTables.Add(Connection:= _
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.FieldNames = True
.RowNumbers = False
.FillAdjacentFormulas = False
.PreserveFormatting = False
.RefreshOnFileOpen = False
.BackgroundQuery = True
.RefreshStyle = xlInsertDeleteCells
.SavePassword = False
.SaveData = True
.AdjustColumnWidth = True
.RefreshPeriod = 0
.WebSelectionType = xlAllTables
.WebFormatting = xlWebFormattingAll
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.WebConsecutiveDelimitersAsOne = True
.WebSingleBlockTextImport = False
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End Sub...

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