Question

Logon failed. Details: ADO Error Code: 0x Source: Microsoft OLE DB Provider

Asked by: twestfall

I have been trying for 2 days now to move a report from my development machine to our webserver.  But it simply won't work.  I've gotten these to work before but they were always dealing with an SQL data base and in this instance I am trying to connect to some older Visual FoxPro tables (dbfs not .DBCs).

Like I said this works perfectly on my development PC but not on the webserver.

I am developing in ASP.NET 2.0 VS 2005 using Visual Basic.

Here is the last bit of code that I tried that still didn't work along with the error I'm receiving.



NOTE:  administrator has full permissions on all servers.


Here is the error I'm getting.  Any help would be greatly appreciated.

Logon failed. Details: ADO Error Code: 0x Source: Microsoft OLE DB Provider for Visual FoxPro Description: Invalid path or file name. Native Error: Error in File C:\DOCUME~1\WEBSERV\ASPNET\LOCALS~1\Temp\Club Backlog Report {8B57478B-2CE4-4BD2-B3D4-9F34927902B6}.rpt: Unable to connect: incorrect log on parameters

Dim fname As String = ""
        fname = Request.PhysicalApplicationPath & "clubadmin\Club Backlog Report.rpt"
        Me.CrystalReportSource1.ReportDocument.Load(fname)
 
        Me.CrystalReportViewer1.ParameterFieldInfo.Clear()
        Dim ParamFields As ParameterFields = Me.CrystalReportViewer1.ParameterFieldInfo
        Dim p_SalesRep As New ParameterField
        p_SalesRep.Name = "SalesRep"
        Dim p_SalesRep_Value As New ParameterDiscreteValue
        p_SalesRep_Value.Value = Session("RepCode")
        p_SalesRep.CurrentValues.Add(p_SalesRep_Value)
        ParamFields.Add(p_SalesRep)
 
        Dim myConnectionInfo As New ConnectionInfo
        myConnectionInfo.ServerName = "\\sbt-server\sbt\pro50\01"
        myConnectionInfo.UserID = "administrator"
        myConnectionInfo.Password = "112233"

                                  
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Asked On
2009-09-16 at 13:38:01ID24737863
Tags

Crystal Reports

,

ASP.NET

,

Visual FoxPro

Topics

Crystal Reports Software

,

FoxPro Database

,

Programming for ASP.NET

Participating Experts
3
Points
0
Comments
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Answers

 

by: mlmccPosted on 2009-09-16 at 15:18:34ID: 25350825

How are you applying the logon information?

are the tables named the same?

Is the database named the same?

mlmcc

 

by: pcelbaPosted on 2009-09-16 at 16:50:57ID: 25351548

The error message seems to be saying "VFP OLE DB provider is trying to access Crystal reports file". In such case it should fail.

Or it could mean "The VFP table is not accessible from the report because VFP OLE DB provider settings in the report were not updated for the new server environment".

So, first of all you should place your files to locations being accessible by simple pathes (no special characters, no spaces, names max 8 characters long). Both ODBC drivers and OLE DB providers do not like long names with spaces and other spec. chars.

 

by: pcelbaPosted on 2009-09-16 at 16:51:04ID: 25351549

The error message seems to be saying "VFP OLE DB provider is trying to access Crystal reports file". In such case it should fail.

Or it could mean "The VFP table is not accessible from the report because VFP OLE DB provider settings in the report were not updated for the new server environment".

So, first of all you should place your files to locations being accessible by simple pathes (no special characters, no spaces, names max 8 characters long). Both ODBC drivers and OLE DB providers do not like long names with spaces and other spec. chars.

 

by: pcelbaPosted on 2009-09-16 at 16:52:32ID: 25351557

Hmm, duplicate entry... I supposed it is suppressed at EE. Sorry.

 

by: twestfallPosted on 2009-09-17 at 06:57:52ID: 25356226

After doing a bit more reading and experimenting I modified the code to this but it still does not work.

mlmcc - The tables are exactly the same.  Since this is only a report I am using the live tables on my development machine to do all the testing.  So yes, the tables are named the same and since these are .dbf files there is no database.

pcelba - Or it could mean "The VFP table is not accessible from the report because VFP OLE DB provider settings in the report were not updated for the new server environment".  

Could you elaborate on this statement?  I'm not sure I know what you mean.  How would they be updated if not with the code below?  Nothing should change?  I had a similer problem access VFP tables from ASP.NET but by using impersonation I was able to overcome.  Some how it appears I need to accomplish the same thing with Crystal.

Dim fname As String = ""
        fname = Request.PhysicalApplicationPath & "clubadmin\Club Backlog Report.rpt"
        Me.CrystalReportSource1.ReportDocument.Load(fname)
 
        Me.CrystalReportViewer1.ParameterFieldInfo.Clear()
        Dim ParamFields As ParameterFields = Me.CrystalReportViewer1.ParameterFieldInfo
        Dim p_SalesRep As New ParameterField
        p_SalesRep.Name = "SalesRep"
        Dim p_SalesRep_Value As New ParameterDiscreteValue
            p_SalesRep_Value.Value = Session("RepCode")
            Dim myConnectionInfo As New ConnectionInfo
            myConnectionInfo.ServerName = "\\sbt-server\sbt\pro50\01"
            myConnectionInfo.UserID = "administrator"
            myConnectionInfo.Password = "112233"
            Dim myTables As Tables =  Me.CrystalReportSource1.ReportDocument.Database.Tables
            Dim myTable As CrystalDecisions.CrystalReports.Engine.Table
            For Each myTable In myTables
                Dim myTableLogonInfo As TableLogOnInfo = myTable.LogOnInfo
                myTableLogonInfo.ConnectionInfo = myConnectionInfo
                myTable.ApplyLogOnInfo(myTableLogonInfo)
            Next
 

                                              
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by: pcelbaPosted on 2009-09-17 at 08:04:34ID: 25357038

It seems your FoxPro tables are at "\\sbt-server\sbt\pro50\01". The question is how they are accessible for user executing the report and if Crystal is able to connect these tables by user and password provided. This is not possible to answer remotely without testing. You should try to access DBF tables without logon info first (they have to be accessible by the user which is executing Crystal). The VFP OLE DB provider should allow it. Then you may start with mpersonation if possible.

I cannot help more, sorry.

 

by: twestfallPosted on 2009-09-17 at 08:20:47ID: 25357188

I copied the tables in question over to a folder on the webserver itself to see if they would be accessible from there and sure enough they were.  There appear to be a problem when ASP.NET has to look at tables that are on another server.  It's certainly a matter of permissions and that's why I had used the code above.  The goal was to provide the appropriate permissions.  So to test I am using the administrator for domain which has permissions to everything but still no good.

Arghhhh......

 

by: pcelbaPosted on 2009-09-17 at 08:38:26ID: 25357402

It could be firewall enabled etc.

 

by: twestfallPosted on 2009-09-17 at 09:31:10ID: 25358032

Definately not a firewall issue.  I can get at these same files with a connection string using the impersonation.

I can't tell you how frustrating this is.  I now changed back to a mapped drive with the userid now having the domain\username as in domainname\administrator and that changed the error message slightly to.

Failed to open a rowset. Details: ADO Error Code: 0x Source: Microsoft OLE DB Provider for Visual FoxPro Description: File 'somast01.dbf' does not exist. Native Error: Failed to open a rowset. Error in File C:\DOCUME~1\WEBSERV\ASPNET\LOCALS~1\Temp\Club Backlog Report {766F8D06-AF10-45D6-9706-EA6195602797}.rpt: Failed to open a rowset

I really don't know where to turn to next.

 

 

by: pcelbaPosted on 2009-09-17 at 09:43:43ID: 25358182

I would test the access to data via VFP OLE DB from another program now...

But to help here is really hard.

 

by: twestfallPosted on 2009-09-17 at 09:55:46ID: 25358333

I am now convinced it's a permissions thing.  The question is how do I overcome it.  I changed the code to read from a path that I created on my local machine C:\pro50\01.  I actually created these folders but didn't copy any data into them.  The error I received was just like the one in my last post.  Basically telling me that SOMAST01.DBF did not exist.  Then I changed the code to look into a folder that didn't exist and I received an error just like the one in my initial post.  This time telling me the path did not exist.

So - I'm guessing that I am now able to see the path but not the files in that path.  Again, the question is why?  The domain\administrator certainly has all the rights but do I need to assign rights to a different user?  And who?

 

by: AndrewJenPosted on 2009-09-17 at 10:30:06ID: 25358760

Have you tried providing appropriate access rights to the ASP.NET account from the calling machine on the data hosting machine?

 

by: twestfallPosted on 2009-09-17 at 12:14:50ID: 25359821

AndrewJen - I'm not sure I know how exactly to do that?  I think I have but you provide some steps so that I can be sure?

 

by: AndrewJenPosted on 2009-09-17 at 12:16:48ID: 25359846

Are both computers members of the same domain?

 

by: twestfallPosted on 2009-09-17 at 12:58:25ID: 25360321

Well yes.  However the webserver is not a domain controller and therefor you cannot assign rights to a mapped drive on another server to the aspnet user of the webservers machine.  Boy, that's a mothful.  You know what I mean right?

I am using impersonation but am unclear if that is used by the Crystal Repots Viewer, but I think not based on these problems.  The impersonation is working in other instances.

 

by: AndrewJenPosted on 2009-09-17 at 14:14:05ID: 25361166

I'd try adding access on the data hosting server's folder for \\webserver\aspnet account by right-clicking and going to the security tab. Just a thought...

 

by: twestfallPosted on 2009-09-17 at 14:34:28ID: 25361323

Actually tried that and it was not allowed.

Since I have the data setup as a linked server, I've now tried creating views for each of the tables and am trying that.  Probably won't work either but its something to try.

 

by: AndrewJenPosted on 2009-09-17 at 16:29:11ID: 25362078

Not sure if your security policy would allow this - and not typically encouraged, but have you considered/tried allowing "Full Control" to "Everyone" on that folder?

 

by: twestfallPosted on 2009-09-18 at 06:23:13ID: 25365623

Definately can't do the full control on those folders.  Would never be allowed.  But I did manage to get the views to work.  The only problem is that it takes over 4 minutes to run a report that should take about 5 seconds.

 

by: AndrewJenPosted on 2009-09-18 at 06:48:45ID: 25365885

Yeah, I certainly understand the security policy issues there ;). It would be interesting to 'test' it for an instant to see if this resolved the issue. If it did it would confirm our suspicions re: it being a rights issue.

Did you look at your security log on the file server to see what logon or file access failures took place during the course of the attempted access? It might help narrow down what accounts to grant access to.

 

by: twestfallPosted on 2009-09-18 at 07:20:15ID: 25366225

No I haven't but that's a great idea.  I'll do that and see what I can find out.

 

by: twestfallPosted on 2009-09-18 at 07:32:05ID: 25366347

Nothing at all even listed in the logs.  This just keeps getting better...

 

by: AndrewJenPosted on 2009-09-18 at 07:41:32ID: 25366456

Do you have that policy enabled on the server - i.e. log file access?

 

by: twestfallPosted on 2009-09-18 at 08:35:00ID: 25367041

yes

 

by: AndrewJenPosted on 2009-09-18 at 09:16:06ID: 25367493

I'm running out of ideas...

 

by: twestfallPosted on 2009-09-28 at 08:31:45ID: 25440181

I was able to resolve this by editing the machine.config file and adding the following to the <System.web> tag.


<processModel autoConfig="true" userName="domain\domainuser" password="asdfsdf" />

 obviously the user had to have the appropriate rights to the folder(s) in question.   I would have thought that the impersonation setup in the web.config would have acheived this but apparently not.

20120131-EE-VQP-002

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