WHen i try to connect to SQL Express 2005 from Visual Web Developer Express 2008, i was getting errors like 'Could not load file or assembly Microsoft.SqlServer.Management.Sdk.Sfc' .
I read some posts which advised me to download and install 3 applications to address above issue ( SharedManagementObjects.msi, sqlncli.msi,SQLSysClrTypes.msi ).
I did that and now i get a different connection error
'A network-related or instance-specific error occurred while establishing a connection to SQL Server. 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) '.
Does anyone know a way of overcoming this ?
Thanks.
How are you trying to connect ? Just a regular ADO.NET connection? If so, what's your connection string?
Are you trying to use SMO (SQL Mgmt Objects)? This sounds like some of your SMO objects aren't available for some reason - you might want to download and reinstall those SMO components from here. The files you want are quite a bit down the page, under the heading of "Microsoft SQL Server 2005 Management Objects Collection" - files are called "SQLServer2005_XMO.msi" (with some x64 variations).
Does installing that MSI help at all?
Marc
PS: okay, thanks, based on your comment - can you try this connection string here:
string connectionString = #"Server=.\SQLEXPRESS2005;Database=DBName;Integrated Security=SSPI";
If you are running SQL Sever Express locally another thing you may want to do check in the Services console (WinKey, Run, 'services.msc') and verify that you have SQL Server and SQL Server Agent entries and that they are both running.
I think this problem is certainly with your connection string. Try doing this
Run the SQL Management Express, and get the server instance name from it.
Usually this problem occurs when the server instance name is wrong (on many computers it could be SQLEXPRESS).
Related
I have reinstalled my SQL Server 2016 as for an unknown reason which lead to the SQL Server down...But, when I finished the installation, I found I can not connect to (LocalDB)\MSSQLLocalDB any more. I got this error message from SQL Server.
Cannot connect to (LocalDB)\MSSQLLocalDB.
A network-related or instance-specific error occurred while establishing a connection to SQL Server. 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: SQL Network Interfaces, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.) (Microsoft SQL Server, Error: 2)
Anyone who have any ideas of how to solve this problem? I do need to speed up for my development, but the DB issue stops me to do anything.
LocalDB is a special version of SQL Server Express - if you haven't installed it, you cannot use that server/instance name to connect to it.
You can easily install SQL Server Express LocalDB separately, side-by-side with SQL Server Developer edition - but you need to install it explicitly.
See this other SO question on the topic for more details
I need help with SQL server in visual studio. I can't seem to connect my visual studio with internal SQL server. I had created a database with visual studio earlier and it was working fine but now i'm getting an error saying:
The attempt to attach to the database failed with the following
information: A network-related or instance-specific error occurred
while establishing a connection to SQL Server. 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: SQL Network Interfaces, error: 50 - Local Database Runtime
error occurred. Cannot create an automatic instance. See the Windows
Application event log for error details.
I have tried to create a new database file in a new project but then i get the error:
A network related or instance specific error occurred while
establishing a connection. The server was not found or was not
accessible. (Provider:Named Pipes Provider, error:40- could not open a
connection to SQL server.
I have tried different things but can't seem to get the hang of the problem. I reinstalled visual studio too but that didn't work either. what can i do to get rid of this error and get my database back online?
If you are running Visual Studio on your local machine, you have not any problem with firewalls and enabling of TCP/IP.
Try this four solutions may fix your problem:
SQL Server Express LocalDB add-on, get it from this link.
Make sure that your SQL service is running.
Use SQL Server Authentication.
Make sure you have typed .\sqlexpress in Server name in Add Connection window. You should use a backslash \ as the separator, not a forward slash.
I am working locally on new laptop (windows 8 x64) with SQL Express 2012 SP1 x64, and I get the following connection error:
A network-related or instance-specific error occurred while establishing a connection to SQL Server.
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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
Kindly notice that service sqlserver is running and that shared memory, TCP/IP, Named Pipes are all enabled.
Sometimes connection is successful but only for a while.
Usually I get the connection error.
Any ideas how to resolve this issue?
Thanks in advance
Check in Windows Services, sometimes the instance of SQL Server is stopped after some updates either in Visual Studio or SQL Server. I think you mean, sometimes IT IS NOT connecting, but after some seconds it does work. Am I correct?
I've renamed my computer, sql Express was looking for the database server on the wrong path. Renaming computer back or updating path would fix that.
That might not be your issue, but help someone else.
Instead of SQL Express - can you connect to and use - (localdb)/v11.0 ?
localdb is lighter weight comparing to sqlexpress and it is the recommended way for developers to put some data quickly in SQL. Also note that localdb does NOT run as a service but as an app, so it might be easier to connect to it. Here is a question discussing other differences.
I am using Windows-server-2008 with Microsoft SQL Server 2008.
And there are a lot of questions about this, but nothing on the internet solved it.
The problem is that i can't connect to the my SQL Server 2008 R2 after rebooting my server.
I placed some new memory in my server, and after rebooting my client/server application didn't work anymore because it cannot reach the database.
So i tried to get in SQL Server Management Studio (SSMS), and tried to loggin with Administrator and another user but both do not work.
When i logg in the following message is displayed:
Cannot connect to (local)
A network-related or instance-specific error occurred while establishing a connection
to SQL Server. 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 Pipes Provider, error: 40 - Could not open a connection to SQL Server)
(Microsoft SQL Server, Error: 2)
I Tried a lot of different things like:
Rebooting server
Try to start the server manually from Sql Server Configuration Manager
Named Pipes - Enabled
TCP/IP - Enabled
Tried to create an new system user or database user as described in the following article: Click Here
Can somebody please help me? I am really confused because i need to get this online. Otherwise i have to reinstall the database server but i do not have a back-up. (is there some folder with a back-up of the settings/tables/columns are stored and can be imported from reinstall?
I was having the exact same problem. net start mssqlserver was giving me the blurb about a failed login attempt. The problem was that I had recently changed the password for the administrator account, and the new password didn't get updated in services.
Here's how I fixed it:
First locate SQL Server from the list here:
Right click and select properties, and navigate to the Log On tab:
Then I typed the new password, and like magic I was able to start SQL Server right through the services manager.
I also did this for any other processes which were marked as "stopped" even though Startup Type was marked as "automatic" (namely, SQL Server Agent).
Is it a named instance or default? Also, is this a local instance? (I see the "(local)" but just wanted to make sure.)
Start the sql server services from services.msc and try to connect
I installed VS 2008 without SQL 2005, then I installed SQL 2008, then I needed 2005 express so I reinstalled VS checking the SQL feature.
The installation went OK, however I still cannot open mdf files from VS.
I think there is no 2005v instance installed.
When I dbl-click an mdf file in VS I get the following message:
Connections to SQL Server Files (*.mdf) require SQL Server Express 2005 to function properly. Please verify the installation of the component or download from the URL: http:go.microsoft.com/fwlink/?linkID=49251.
Update
I tried to attatch it, it doesn't work.
When I tried to attach it to SQL 2008 it doesn't work, when I try to attach it to SQL inside VS, I get the following error message:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
I suspect that SQL 2005 doesn't have any instance at all.
I opened SS manager and I didn't see any installed instances.
I don't know how to install an instance, or else if there is a way to open with 2008 tell me.
Any help will be really appreciated!
You don't just "open" an mdf file in Visual Studio - you need to "attach" the file to your SQL Server instance, then access it by creating a SQLConnection (System.Data.SQLConnection) from your VS application. See here for more info on attaching databases (note the FOR ATTACH option), and here's a good intro on accessing SQL Server data using a SQLConnection.
Oh, and if you should happen to see anything about "user instances", pretend you didn't. It was supposed to make auto-attaching databases easy (in fact, attaching databases isn't all that hard anyway). Microsoft is warning that the feature will be discontinued in later releases of SQL Server, so you're better off just learning the "right" way to do it.