I am completely new to Windows Azure.
I currently have a local db for my .NET application. I have created an azure account along with a relevant SQL Azure Database.
I am working on adding the C# code in order to pass the data from the local application to the cloud. In order to test this functionality I have added a random user who I want to insert into the Azure DB.
I have used the following tutorial: http://www.windowsazure.com/en-us/develop/net/how-to-guides/sql-database/
I are trying to connect to the Azure SQL Database using a connection string in app.config:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<connectionStrings>
<add name="STAREntities"
connectionString ="Server=tcp:fkr95b1any.database.windows.net,1433;Database=StarSoftwareDb;User ID=starSoft1#fkr95b1any;Password=xxxxxx;Trusted_Connection=False;Encrypt=True;" />
</connectionStrings>
</configuration>
This method is being used for registration, this code establishes the connection to the azure database, however it is currently failing on 'conn.Open();'.
SqlConnectionStringBuilder csBuilder;
csBuilder = new SqlConnectionStringBuilder(ConfigurationManager.ConnectionStrings["STAREntities"].ConnectionString);
SqlConnection conn = new SqlConnection(csBuilder.ToString());
conn.Open();
On clicking the register button which triggers this code, the program hangs for a long period before throwing the following 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: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time or established connection failed because connected host has failed to respond.)
Any help or advice here would be greatly appreciated.
UPDATE
I have changed my connection string to the one #Leonardo suggested below. I have also enable 'TCP/IP' and 'Named Pipes' in sql server configuration manager aswell as allowing opening port 1433.
The dashboard for the master DB is now showing successful connections on the table but I am still getting an exception on
conn.Open()
try this here:
"Server=fkr95b1any.database.windows.net;Database=StarSoftwareDb;User ID=starSoft1#fkr95b1any;Password=xxxxxx;"
and check your firewall settings for the instance! it might be closed for all applications (default setting)
Related
I have successfully created an Hybrid Connection between Azure and an on-premise resource. I see "Connected" in both the Azure Portal and Hybrid Connection Manager.
When I run my .NET code local in Visual Studio with the connection string "AppServer://MyPC:5162/AzureOeApi" everything runs fine but when I run it in Azure, I get a connection error (it can't see the on-prem end-point).
Do I need to change my connection string when running in Azure to force it to go through the Hybrid Connection or will it be handled automatically?
No need to change connection string.
We had similar issue - connection was "Connected", but no requests whould go through. You need to use fully qualified domain name in configuration of hybrid connection.
Please also read this question - similar question
I've been struggling with this problem for a whole day and finally I had a breakthrough: in my original connection string I was referring to [DB_SERVER]\[INSTANCE], having correctly configured the DB instance to listen to a given TCP port [PORT].
With this setup the Hybrid Connection was 'Connected' but I was getting the exception:
ExceptionMessage: The underlying provider failed on Open. -InnerExceptionMessage: 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)
It turns out that the connection string needs do explicitly refer to the port number (instead of the DB instance) using the syntax [DB_SERVER],[PORT] (mind the comma!).
Unfortunately Microsoft does not document this subtle detail....
I've built an .asmx web service which retrieves informations from a local sql server 2014 database.
Everything is working fine on localhost, but after publishing the web service to Azure i get the error:
An unhandled exception of type 'System.Web.Services.Protocols.SoapException'
occurred in System.Web.Services.dll
Additional information: Server was unable to process request. ---> 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)
SQL Server is configured to allow remote connections.
My connection string is like:
string con2 = #"Data Source=OfficePc\MSSQLSERVER2014;Initial Catalog=Database;Persist Security Info=True;User ID=Admin;Password=123456";
Is the error the result of something missing from the connection string, or am i missing some configurations changes?
As Paul mentioned in a comment under the question, your connection string is pointing to a local database resource (presumably on your dev machine). Even though you configured your local database server to support remote connections, the address OfficePc\MSSQLSERVER2014 isn't addressable, as that does not equate to a machine address (IP address).
Your app would need to connect to your database via an accessible IP address (which might require you to do some port-forwarding on your local network, or open ports on your firewall).
Alternatively, you can migrate your database to Azure (either with SQL Server in a VM or with the SQL Database service).
Keep in mind: If you are accessing a local (on-premises) database server from Azure, there will be latency added, as well as some outbound bandwidth costs.
It looks like SQL Server instance is not running or not accessible. Try connecting to the same database using SSMS and if you get the same error then the instance is not running.
Mostly the error occurs when the Database server was not found. Recheck if the server name (Data Source) is mentioned correctly. If you manually generated the connection string use .uld file to generate connection string.
To auto generate connection string using .udl file:
Create a sampe.txt file.
Rename it as sample.udl file.
Then double click on it, It will show you window entitled 'Data Link Properties'.
Configure the connection there.
Then Test the connection using test connection button.
Then open the file with notepad. It will show you the exact connection string.
For further reference check : MSDN
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
System.Data.SqlClient.SqlException A network-related or instance-specific error
i have winform application in c# which connect to my own db and its working fine my current sql connection string is :
SqlConnection con = new SqlConnection("Data Source=ITPL_PC1;Initial Catalog=Data_Project;Persist Security Info=True;user id=sa;Password=insforia");
but when i am taking this winform to another computer its not working .. then i am changing my connection string to :
SqlConnection con = new SqlConnection("Data Source=192.168.0.28\\ITPL_PC1;Initial Catalog=Data_Project;Persist Security Info=True;user id=sa;Password=insforia");
but its not working ...
i have changed all the settings in sql server of remote access but still it showing an error
Sql Exception was unhandled
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)
is my connection string is wrong? what it should be?
pls help me out
Data Source=ITPL_PC1
Identifies a server called ITPL_PC1. You're connecting to the default instance on this server.
Data Source=192.168.0.28\ITPL_PC1
Identifies an instance called ITPL_PC1 running on a server with IP address 192.168.0.28. We don't know the name of this server.
If the instance you want to connect to is the default instance on ITPL_PC1, then the first version should always work (provided ITPL_PC1 can be resolved).
The Windows security might be preventing the access. You can try the below.
1.Go to the service management console of windows by typing services.msc in the run window.
2. In the window displayed you can see a list of services. From the list find out Base Filtering Engine.
3.Right click and stop it. Its done
I have fixed the same issue like this after lot of googling.(For me it was not working even after enabling TCP/IP from sql configuration manager)
First you open SQL managnebt studio and connect to another pc sql server :
Please follow bolew step :
Strat -> program -> window sql server 2008 -> configuration tools
--> sql server Configuration manager -->
Start sql server browser service
-----------
Next --->Sql serverNetework COnfiguration --> Enable all Protocls and
also Sql Native Client.. --> Enable all Protocls then
--------------
reatsrt all service and connect to sql
-------------------------------------------------
If you get connection then SQL Database to connect database from visual studio from there to find connection string and copy and paste to connection string.
I am trying to connect to the database but I am getting this exception:
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've googled a lot, but I could not find the answer.
Here's my configuration:
I use MS SQL Server 2008 Express. Both Sql Server and Sql Server Browser use my account (I am an administrator). I've also used local system and local service. Without success.
Here is my connectionstring in app.config:
<?xml version="1.0"?>
<configuration>
<connectionStrings>
<add name="EventManagerEntities" connectionString="metadata=res://*/Entities.RelationModel.csdl|res://*/Entities.RelationModel.ssdl|res://*/Entities.RelationModel.msl;provider=System.Data.SqlClient;provider connection string="Data Source=martijn-laptop\sql2008;Initial Catalog=EventManager;Integrated Security=True;MultipleActiveResultSets=True"" providerName="System.Data.EntityClient"/>
</connectionStrings>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>
I've also tried to use the sql server username and password, also without success.
I am using winforms. What else can I try?
When I check netstat -an I get this:
TCP 0.0.0.0:1433 0.0.0.0:0 LISTENING
TCP [::]:1433 [::]:0 LISTENING
I don't think this is correct, right? But how do I set it right?
It cannot find instance/server. Telnet the 1433th or the configured port of martijn-laptop\sql2008 to verify its accessible
Go into the SQL Server Configuration Manager and make sure you have the protocols you want to use enabled under "SQL Server Network Configuration" > "Protocols for Sql2008"
From the error it seem like there is connectivity to database issue. Assuming this solution has been working elsewhere have you setup and connected to a different database?
Is so validate that the code generated with edmx has the correct default database connection name or that you are overriding it:
var context = new EventManagerContext("EventManagerEntities");
Or whatever the correct systax for EF is.
I Get this error message whenever I tried to up my aspx page.
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
whic is connected in this connection string
SqlConnection conn = new SqlConnection("Data Source=192.168.xxx.xxx;Initial Catalog=DBSample;User ID=dev;Password=pass;Integrated Security=SSPI;"))
The weird thing is that the server that I'm connecting has already hosting some aspx page. I don't knnow if there's missing in my connectiong string Thanks. and I know the server that I'm connecting to is already allowed remote connection since it's already hosted some aspx websites. :(
Thanks!
Do you need to add an instance name to your connection string? Do you have the SQLBrowser service running on the target machine, or do you have to specify a port for the instance?
You also get that very same error when the database doesn't exist at the location that you are trying to connect to. Have tried looking at the connection strings of the aspx pages that are successfully connecting?
edited: Specifying Integrated Security=SSPI means you will be using Windows authentication to login to the database. What user is your aspx page running as (check your app pool)? Does it have the rights to log in to the database? This could also explain why it works on one server but not another.
Are you trying to connect to a hosted SQL Server over TCP/IP?
The reason I ask is some firewalls block traffic over Port 1433.
If not then it is simply a case of validating the connection string details and ensuring the SQL Server Engine is actually running...
Have you EVER been able to connect to this database from the PC you are currently attempting this connection on?