Error connecting to the data source



Error connecting to the data source

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Question

I’m trying to test a SQL XML Bulk Load routine with SQL Server 2008 R2 installed on Server 2008 R2. I’m receiving the below error when running my script.

The code in my vbs script is as follows (with personal details altered).

I thought I had the connection string right, could anybody comment on why I might be receiving this error?

Answers

«User ID» and «Password» are intended for SQL Login authentication, not for Windows Authentication.

Here’s the proper connection string for Windows Authentication

Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=YourDB;Data Source=servername\instance

Sebastian Sajaroff Senior DBA Pharmacies Jean Coutu

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Error connecting to the data source

This forum has migrated to Microsoft Q&A. Visit Microsoft Q&A to post new questions.

Answered by:

Question

I’m trying to test a SQL XML Bulk Load routine with SQL Server 2008 R2 installed on Server 2008 R2. I’m receiving the below error when running my script.

The code in my vbs script is as follows (with personal details altered).

I thought I had the connection string right, could anybody comment on why I might be receiving this error?

Answers

«User ID» and «Password» are intended for SQL Login authentication, not for Windows Authentication.

Here’s the proper connection string for Windows Authentication

Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=YourDB;Data Source=servername\instance

Sebastian Sajaroff Senior DBA Pharmacies Jean Coutu

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Error connecting to the data source

Вопрос

When I want to run Bulk Load using my .NET application I get the following error:

«Error connecting to the data source. «

I do not understand why because in Visual Web Developer I have successfully added a data connection to the server (myserver) and selected the relevant database (mydatabase). I am also able to query the database from within Visual Web Developer. Could the problem be related to the version of SQL Server that I am using? Namely, SQL Server 2005 Express Edition. Or is the problem simply a wrong connection string (which I strongly doubt), see below. Or due to some kind of configuration setting in either SQL Server or my .Net application (perhaps in web.config).

I use the following connection string:

bulkLoadObj.ConnectionString = «provider=SQLOLEDB;datasource=myserver;database=mydatabase;integrated security=SSPI» ;

Note that I do not speficy my account and password (such as: «uid=MyAccount;pwd=MyPassword»). The reason is that the connection to my SQL server is based on windows authentication.

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Does anyone have an idea on how to solve this problem?

Or do I need to give more information first? Please specify what information.

Ответы

I know how to resolve the problem in the future. I simply need to escape the back-slash by «\\». See

Все ответы

«datasource» should be two words. Change it to «data source» and see if it works.

You are correct, I mistyped it here. But that was not the problem.

In the meantime I have solved the problem by downloading the standard version of MS SQL Server, i.e. the trial version.

And there is something interesting to note about the connection strings.

In case of the express edition the name of my server had the following format:

«ComputerName\InstanceName». And InstanceName was btw «SQLEXPRESS» (that is the default I guess).

However, I had to change the slash-backward to a slash-forward in the connection string because otherwise I would get an error in my code. And actually, I think that this could be the cause of my initial problem. But I am not sure.

In the current situation, the name of my datasource is simply one word, so there are no slashes in the connection string.

I am really happy that it works now, but considering that I use a trial version my luck will not last forever. So, my new question is:

When I will reinstall SQL Server 2005 Express Edition, will I be able to change the server name to a single word?

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Error connecting to the data source

This forum has migrated to Microsoft Q&A. Visit Microsoft Q&A to post new questions.

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I am a network engineer and am working with our SharePoint / SQL folks to resolve the following problem.

We get the following error when trying to connect to a data source with the query designer. «An error occurred while connection to data source ‘DataSource1’. Only the text-based query designer will be available.»

In the Details of the error it says: «A network-related or instance-specific error occerred while establishing a connection to SQL Swerver. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Popes Provider, error: 40 — Could not open a connection to SQL Server)

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I know this is a long error message, but I’m hoping someone out there has seen this and has an easy resolution to the problem.

All replies

The above error message is generic message when the connectivity fails to the backend SQL Server.

The database we are trying to connect from ReportBuilder, is it on the same machine or a different machine?

Did we check the regular connectivity from the ReportBuilder machine to the DB Server?

  • From the Remote machine, try to do a Telnet to the server on the SQL Server port. If this is failing, then probably the port might be blocked.
  • Try to force the TCP/IP protocol for connecting to the Server from the remote machine. You can use tcp:ServerName,PortNumber and check the connectivity from SSMS remotely.
  • You can also try forcing NamedPipe protocol, if that is enabled on Server.
  • On the remote machine, check if there are any aliases created. Goto Start>Run>cliconfg. This will open Client Network Utility. On the aliases tab, check if there are any aliases created for this server. If there are, try to delete them and check the connectivity.

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Error connecting to the data source

Tableau Server on Windows Help

For users to work with Tableau Server data sources, up to three things need to be in place:

Permissions for the data source: Anyone connecting to a data source must have the Connect and View permission capabilities for it. This also applies to users accessing views that connect to data sources. Anyone publishing and modifying data sources must have the appropriate user site role and also have the Save and Download/Save As permissions. See Permissions for more information.

Multidimensional (cube) data sources have to be downloaded and used in Tableau Desktop, so they require Download/Web Save As permission. For more information about cubes in Tableau, see Cube Data Sources.

Ability to authenticate to the database: There are several ways you can connect to data in Tableau and control who has access to what. Basically, whichever entity is connecting to the database must be able to authenticate. The entity could be Tableau Server performing an extract refresh. It could be a Tableau Desktop user connecting to a data source that then connects to a live database. It could also be a Tableau Server user who’s accessing a view that connects to a live database. Refer to Data Security to learn more about your options.

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Database drivers: If the person who created and published the data source in Tableau Desktop needed to install additional database drivers, you may need to install them on Tableau Server as well. If you are running a distributed installation of Tableau Server where, for example, the data server process is running on an additional node, any required database drivers must be installed there as well as on the initial server node. Other processes require drivers as well. See Database Drivers for more information.

Data Source Error Messages

Here are some errors that workbook authors and other users may encounter as they work with data sources and views:

Permission to access this Tableau Server data source denied: Connecting to a data source requires the Connect permission. See Data access for published Tableau data sources for more information.

Data source not found: Someone working with a view may see this error if a data source is removed from Tableau Server or if their Connect to Data page needs to be updated. To update the Connect to Data page in Tableau Desktop, click the Refresh icon:

Unable to connect to this Tableau Server data source: This error may appear if the connection information for the data source has changed—for example, as a result of the database server name changing. Look at the Data Connection information for the data source and confirm that it has the correct settings.

Unable to list Tableau Server data sources: This error may occur if a user is trying to access Tableau Server data sources and there are connectivity issues between Tableau Server and Tableau Desktop.

Can’t connect with a cube data source: To use a published multidimensional (cube) data source, you must download the data source and use it in Tableau Desktop. Verify that you have the Download/Web Save As permission for the data source. If you try to add a published Cube data source to a workbook in Web Edit mode on Tableau Server, you will receive the error Unable to connect to the data source. / DataServiceFailure Unable to connect to the server » «. For more information about cubes in Tableau, see Cube Data Sources.

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