Hi, I have a web apllication using asp.net, I have two connectionstrings (cadenaCon and cadenaCon2) in web.config.
<connectionStrings>
<add connectionString="Server=SUNBOGW-MROMEROSQLEXPRESS;Database=ModulosWebkkk;UID=sa;PWD=martha;" name="cadenaCon" providerName="System.Data.SqlClient" />
<add connectionString="Server=SUNBOGW-MROMEROSQLEXPRESS;Database=ModulosWeb;UID=sa;PWD=martha;" name="cadenaCon_bak" providerName="System.Data.SqlClient" />
</connectionStrings>In the class file I have this sub and it works well
Public Sub New()
conexion = New SqlConnection(ConfigurationManager.ConnectionStrings("cadenaCon").ConnectionString.ToString)
End Sub
My problem is I like to try to connect with cadenaCon and if this connection fails use the other. I used a try but it donÂīt work,
Public Sub New()
Try
conexion = New SqlConnection(ConfigurationManager.ConnectionStrings("cadenaCon").ConnectionString.ToString)
Catch ex As Exception
Throw New Exception(ex.Message)
conexion = New SqlConnection(ConfigurationManager.ConnectionStrings("cadenaCon_bak").ConnectionString.ToString)
Finally
End Try
End Sub
The following statement fails when using SQL Analyzer under sa but works on all of our development and staging server. All are SQL Server 2005 SP1. We upgraded production over the weekend from SQL Server 2000, creating a new instance machinenameSQL2005.
SELECT *
FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0',
'Excel 8.0;Database=d:data est.xls',
'SELECT * FROM [Sheet1$]')
The error we are getting only in prodcution is:
OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)" returned message "Unspecified error".
Msg 7303, Level 16, State 1, Line 1
Cannot initialize the data source object of OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)".
I got an approach like that: 1) Read something from DB - check the value, if true stop if false go on2) Read the second Value (another SQL Statement) - check the value etc. Now I could open the connection at 1) and if I have to go to 2) I leave the connection open and use the same connection at 2). Is it ok to do that? The other scenario would be opening a connection at 1), immediately close it after I read the value and open a new connection at 2). Thanks for the input!
I had link my 4 of workstations to server with MySql.1 pc of my pc can run a software which can update MsSql perfectly but notothers(3 failed).I tried to add System Dsn data source for Control Panel - Odbc data source32.The pc which working fine with the software function but 3 of the rest not.My pcs running xp and win98 !Regards.Thanks.Leslie Lim
I am accessing SQL2005 with C# code using OleDbConnection.
A try and catch block catches the following error once a while between the Open() and Close() of the connection:
ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.
I do not even have any idea where to start to debug this. The ExecuteNonQuery() runs a delete SQL query. It works 99.9% of the time. I do not see anything wrong when this error happens.
I have got this error below which is similar with what has posted in forum.
SQL_ERROR (-1) in OdbcConnection::connect sqlstate=28000, level=-1, state=-1, native_error=18456, msg=[Microsoft][SQL Native Client][SQL Server]Login failed for user 'sa'.
As i have found its solution in this forum. Here I would like to ask since my Ms SQL server epress set up fail due to the error above, but some of the previous setup is successful. In this case, am I going to run the .exe set up to continue the remaining process or I have to uninstall and install it again? Thanks.
Hi group,being pretty new to setting up sql server, I am stuck. Have installed sql 2000 server on Win 2000 server, IIS 5.0. I try to connect via ASP script that looks like this:<%Set Conn = Server.CreateObject("ADODB.Connection")ConStr = "PROVIDER=SQLOLEDB; DATA SOURCE=192.168.1.99"ConStr = ConStr & ";UID=someUser;PWD=somePassword" ConStr = ConStr & ";initial catalog=myDatabaseName;network library=DBMSSOCN"Conn.Open ConStrConn.CloseSet Conn = Nothing%>The IP number is the webserver my router points to on port 80.But get an HTTP 500 error and "The page cannot be displayed"Any suggestions as to what I am doing wrong here, would be very much appreciated.I have run applications for a long time that operate Access databases, but starting a new, an big project, forces me to upgrade to sql databases.Best wishesFCH
In one of my packages, I set the package-level property called TransactionOption=Required. During run-time I saw an error saying "[Execute SQL Task] Error: Failed to acquire connection "SQL_DW". Connection may not be configured correctly or you may not have the right permissions on this connection. ". When the property is changed to anything other than Required, it works fine (the calling package that calls this package is not involved in a transaction).
The machine running the packages is Windows Server 2003, and so is the database where the data lives. I verified that the machine containing the database does has Enable Network DTC Access checked in Control Panel -> Add/Remove Windows Components -> Application Server.
When i attempted to connected to Microsoft SQL Server 2005 Express via ASP.NET 2.0 application, it seems to throw the following error.
I had set up the Protocols for Express (TCP/IP and Named Pipes are both enabled) to allow remote connections using both TCP/IP and named pipes. Login failed for user ''. The user is not associated with a trusted SQL Server connection.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Login failed for user ''. The user is not associated with a trusted SQL Server connection.
Source Error:
The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:
1. Add a "Debug=true" directive at the top of the file that generated the error. Example:
<%@ Page Language="C#" Debug="true" %>
or:
2) Add the following section to the configuration file of your application:
Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.
Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.
I am running SQL Server 2012 on a VM and am trying to pull data from a network drive (S: or misvnascfs0003).I can import data using the Import Wizard and save the package as an SSIS package. When I try to Run the Package I get The Acquire Connection method call to the connection manager "SourceConnectionExcel" failed with the error...
If I save the file to the VM local drive the SSIS package run fine.When I log into SSIS through SSMS i have to run as "Administrator".
We find that if we deploy the OLAP database with a different name on the test server, then regardless of how we change the connection string provided to the SSIS package that processes the cube, then the package fails to connect to the database. To clarify:
In development the OLAP database is called MyOlapDB and the source database is called MySqlDB. Both are on the same machine. When the the application is built and released for test, the test team install the databases on a replica of the production environment (i.e. web app on one machine, OLAP DB on another and SQL database on yet another). They also, quite rightly, implement the new test databases so they incorporate the build version number. So, MyOlapDB123 and MySqlDB123 are both from build 123.
This is when the problems start. Regardless of how the connection string is specified in the job that processes the cube, the SSIS integration package fails with the error:
[Analysis Services Execute DDL Task] Error: Errors in the metadata manager. Either the database with the ID of 'MyOlapDB' does not exist in the server with the ID of 'OurTestServer', or the user does not have permissions to access the object.
We have tried config files and job properties, but neither work. Also, simply attempting to run the package using the DTEXECUI does not work either.
Looking inside the XML of the package, we clearly see the ConnectionManager object which has the original connection string, which is
Data Source=localhost;Initial Catalog=MyOlapDB;Provider=MSOLAP.3;Integrated Security=SSPI;Impersonation Level=Impersonate;
However, editing the initial catalog here still does not solve the problem. Searching the XML for the string MyOlapDB reveals the OLAP database name in two other places - both within the object data of the two Analysis Services Execute DDL tasks.
Anyone know how to solve this problem without having to hack the XML of the package?
Hi, I had an old web application created during asp.net 1.1 and it have a connection problem with the sql server 2005 when it is mirgrated to a new webserver with dotnet framework 2.0 platform. I have enabled the remote access(TCP/IP and named pipes) in sql server 2005, did all the neccessary things, check whether the TCP/IP is enabled, named pipe is enabled... I created another web application using VS 2005. The database connection works perfectly well.This are the connectionString from the old web application.<appSettings> <add key="ConnectionString" value="Server=127.0.0.1;Database=somedb;User id=user; Password=somepassword; Trusted_Connection=False; POOLING=FALSE"/></appSettings> Thankyou in advance!
Hello everybody I would like to know more about the number of possible connection to a sql server is it by pool ? or there is max for all the database ? all the server ? how I can get the number of connection open ? Thx in advance
Hi, I hope this is right place to ask for help.If it is not, Please show me where and if it is please Help me I using Window Vista bussiness, Microsoft visual 2005 professional edition, Microsoft SQL server express edtion I have created table on Database. My sql server name is KYAW-HQ **but in the bar it shown like as KYAW-HQSQLEXPRESS My data base name is kyaw I have already Enabled Name Pipes and TCP/IP setting in sql studio management tool express I using window authentication to log in to sql server management studio express.
After I click the button the error has shown like below
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).
Please tell me what i have to do. If someone read me, please tell me and advice me how to fix above problem. Thanks
This code sample stops when I try to open a connection (see below). Ther error message reads "pipe provider , error 40". The help suggests that the credentials are wrong. I donīt think so, could there be another problem? Tough question but, I would appreciate any help.
Hi, Has somebody had a problem like this before? Exception Details: System.Data.SqlClient.SqlException: 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) That's part of the code: SqlConnection con; string sql; SqlCommand cmd; con=new SqlConnection("Data Source=elf/SQLEXPRESS;Initial Catalog=logos;Integrated Security=SSPI;"); sql="SELECT max(id_kandydat) from Kandydat"; con.Open(); cmd=new SqlCommand(sql,con); int id = Convert.ToInt32(cmd.ExecuteScalar()); con.Close(); SqlDataSource7.InsertCommand="INSERT INTO Kandydat_na_Kierunek(id_kandydat, id_kierunku, id_stan) VALUES ("+"'"+id+"'"+","+"'"+DropDownList1.SelectedValue+"'"+","+'1'+");"; I don't really get it. I'm nearly 100% sure that before some changes in my project this had worked perfectly. Does anybody have any idea how to make it work again? I would be very grateful for any help. And, yesy, I know it is quite common error, but proposed solution found didn't help.Regards,N.
Hello, I have always closed my db connections asap after opening them and have always thought this was the best practice. But now I am wondering if I can just leave the connection open. I created a windows service which runs on a timer and executes every 5 seconds. The problem is that the code takes longer than that to process and the code may be executing three times at once. Im worried that since I use the same connection each time the code executes that a connection opened by the first run through may be closed or reopened by the second or third running of the code resulting in an error. The connection is opened and closed about 10 times each time the timer event fires. Should I open the connection once and leave it open when the service is started and close it when it is stopped or on any error?
i m getting this exception "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)" i want to know that this exception is from my end or on Server End. because 5 to 6 month my application works fine but in these days i m getting this exception 5 to 20 times a day your help will really appricate...
hi to all, I create a web application in asp.net with sql server 2000, I use always close connection in .net code as my consern but when run my application then visit page to page give a error "General network error " message . then i check lots of connection is sleeping state in process info in sql manegment(current activity) Now i open the particular processId in Process info show open connection with any storeprocedure name and show .net sqlclient data provoider referance as open connection which is fetch the data from sql then i check in code find really the connection which is got data by that store procedure is not close properly and i close it. This is ok but one problem is that some procesId show blank info with .net sql client data provoider. so how can i find where these conneciton is open in my applicaton because this processId doesn't give any clue for it , it show nothing only blank but status is sleeping. If any help have this context then quick feedback. Thanks
One issue has got me stuck while getting to build an application(ASP.NET/SQLSERVER). Whenever I try to connect to SQL Server 2005 (installed on local host) using Visual Web Developer 2005 Databse Explorer, I get the following error message:
"An error has occured while establishing a connection to the server. when connection 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)"
NB: - on SQL Servers' Surface Area Configuration, Remote connections are set to "Local and Remote connnections" and "Using both TCP/IP and named pipes".
I am developing a web service that uses a sql data connection.
The sql database is on a server, and the development version of my web service is on my pc.
I can connect/access the data accross my network when I run the service on my PC, but as soon as I put the web service onto the server(with the sql) it displays, the service wont function - error: 40 - could not open a connection....
I presume that sql is configured correctly as I am recieving data back when I request it accross the network. I dont understand why it wont work when I have the service on the server with the sql?
I'm trying to update an SQL DB from data in Quickbooks. I am trying to find if I can open a dsn connection in a stored procedure, called from an ASP page, to the quickbooks db using odbc. The driver I have for odbc does not allow for linked servers. I'm very new to stored procedures and such so please bear with me. Thxs.
hello ,i write this code string sql="SELECT * FROM Customers"; SqlConnection connection = CollectionManager.getHotelConnection(); SqlCommand command = new SqlCommand(sql,connection); command.CommandType = CommandType.Text; command.ExecuteNonQuery(); result = command.ExecuteScalar(); connection.Open(); ... and when the debug goes to connection.Open () it throws me this
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)
but i have all enabled ,browser running normally ,name pipes tcp ip enable all ,but it makes me this thsi all the time what mayb e huppens there?
I have created a data reader to loop thru a table and build an update statement. Now I need to execute this statement in the datareader loop but the connection object is in use.
I tried creating another connection object but get an error: "The context connection is already in use."
Is there a way to open another connection while the main context connection is open. Just to make it clear, I do not want to read all the rows into memory first and then call update, it has to happen for each iteration of the datareader.
Hi, I've created an "ASP.NET Web Application" project in Visual Studio and I want to simply open a connection to a database in SQL Server. All I have done is adding these 3 lines below without modifying any other generated codes by Visual Studio.(I've done this within code behind in Page_Load() not by <script> tag within HTML code) public class WebForm1 : System.Web.UI.Page { private void Page_Load(object sender, System.EventArgs e) { // Put user code to initialize the page here SqlConnection c = new SqlConnection(); c.ConnectionString = "workstation id=BABAK;integrated security=SSPI;initial catalog=db1;persist security info=False"; c.Open(); } ... } But I get this error : Server Error in '/projects/fortest/tDB2' Application.-------------------------------------------------------------------------------- Login failed for user 'BABAKASPNET'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'BABAKASPNET'. Source Error: Line 24: SqlConnection c = new SqlConnection();Line 25: c.ConnectionString = "workstation id=BABAK;integrated security=SSPI;initial catalog=db1;persist security info=False";Line 26: c.Open();Line 27: }Line 28: Source File: c:inetpubwwwrootprojectsfortest db2webform1.aspx.cs Line: 26 What's wrong ?
I posted this on the Dotnetnuke forums but no answer for it, so since it is a SQL error I guess maybe someone here might know. I installed the core forum that comes with the installation, the page runs great until I add the forum module. I get this error:
A critical error has occurred.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) The portal is in godaddy if this can help. Thanks, Erick
I receive this error when choosing the data connection in TableAdapter Wizard for me to reference the ASPNETDB.mdf database.
Failed to open a connection to the database
"The header for file 'C:InetpubwwwrootWebsites4App_DataASPNETDB.MDF is not valid databasefile header. The FILE SIZE property is incorrect.An attempt to attach an auto-named database exists, or specified file cannotbe opened, or it is located on UNC share."
Check the connection and try again.
I already have the connection at config but the error persists.
hI I have a website which is on a web server owned by another companyI have webpages which should connect from the web server to sql server 2000 which is based at my companyhowever I am getting the error messageAn 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) When the website was on citrix it connected fine, however once it has moved to a web server it does notI have checked and tcp/ip and named pipes are both enabled any1 any ideasthanks in advance!! :-)
HiI am connecting to an external web server running sql 2005 absolutly fine when testing a site using my localhost on my laptop. How ever, when i deploy the site to my server i get the error 40 code - the external database its trying to connect to is on a different server to both my own localhost and my own server.here is my connection string from my web.config: <add name="plightConnectionString" connectionString="Data Source=111.222.333.444;Initial Catalog=plight;Persist Security Info=True;User ID=xxxxxxx;Password=xxxxxxxx;" providerName="System.Data.SqlClient" /> I've googled the error but all answers require alterations to the server where the sql database is installed, and it works from my localhost anyway - is there anything i need to do to my own server which is running the website? Regards
