SQL Server / Web Server Connection Troubles
Mar 1, 2005
I have a XP Pro machine that acts as our dev SQL machine, and I run my asp.net apps on my local machine (also XP Pro). I can connect (using QA) to the SQL Server just fine (using SQL Server authentication) but for some reason my ASP.net apps won't connect, even though I use the same connection string.
I get 'SQL Server does not exist or access denied.'
Do I need to set up special permissions or something on my ASPNET user to connect to the SQL Server machine? My local machine connects fine to several other SQL Servers including our off-site main serverfarm - so I can't work out what's different with this XP Pro box. I know my connection details are correct because EM and QA connects just fine with the same details.
help.
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Sep 12, 2006
We have an application that connects to a remote site's SQL server using aVPN client. It also uses a local MS SQL database located on one of ourservers. It seems once the VPN connection is established the client machineis always looking to the remote VPN connection/server for it's data. Itested this out by going into the ODBC applet and doing a "TEST CONNECTION"with the VPN client closed. The response was immediate and the connectionworked. Once I established the Internet VPN connection the connectionrepeatedly failed after a several seconds while it appeared to be looking onthe Internet for a local server.What can we do to fix this problem.Thanks,Charles MacleanMTS, Inc.
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Jan 23, 2005
I've got a problem here logging on mssql server
It seems to me that the problem is in ConnectionString
When I add new connection to the project via Microsoft OLEDB provider for SQL Server
I use login 'sa' and password 'pwd'. Then if I check 'Allow saving password' (or something like that - i use other language) everything works fine, but if i don't at last I get an error message
Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'sa'.
Source Error:
...
Line 47: Me.SqlCommand1.Connection.Open()
...
Can I use connection string with no explicit inclusion of password?
TIA
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Mar 29, 2006
Hi to all.I'm trying to transact from an ASP.NET application in a machine with an SQL Server 2005 placed in a different machine. I can connect without problems from my application to the database, but the problems are when I need to transact with it. The error message I receive is "Network access for Distributed Transaction Manager (MSDTC) has been disabled. Please enable DTC for network access in the security configuration for MSDTC using the Component Services Administrative tool." (at code I'm using the TransacionScope object).On the first machine, where we have the Visual Studio 2005 and the application web environtment is placed, is an standard Windows XP Professional. On the MSDTC configuration I have checked outgoing and the firewall is down. On the second machine, where is placed my SQL Server 2005, I have all the checkboxs checked at the MSDTC Configuration, and I have the Windows Firewall enabled with the SQL Server and the MSDTC as exceptions, with the ports 1433 and 135 as exceptions too. At the SQL Server Configuration Manager I have as enabled the TCP/IP, the Named Pipes and Shared Memory at Protocols for MSSQLSERVER.When I'm using an SQL Server 2000 database the code works fine and I don't have problems.Any one can help me?Thanks in advance.Jesús
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Mar 27, 2008
Hi!
I have trouble using Visual C # 2008 EE and SQL Server 2005 EE. Together with SQL Server on this computer, I successfully using VC # 2005 Prof and Web Developer 2008 EE. A VC # 2008 EE, I can not add the new connection to SQL Server 2005 through SqlClient in Database Explorer .. simply because the Change Data Source dialog does not give me this opportunity, offering a choice only MS Access, MS SQL Server Compact 3.5 and MS SQL Server Database File. I note once again that, for example, the Web Developer everything works fine.
(Excuse me, I use translate.google.com)
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Apr 12, 2007
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!
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May 5, 2014
Occasionally I'm seeing the following error when tranlog or full backup maintenance plan is executing.
Failed-1073573396) Failed to acquire connection "Local server connection". Connection may not be configured correctly or you may not have the right permissions on this connection.
What is strange is that it goes away without any action from myself. We have a tranlog backup that is scheduled every hour. I had this error happen once in the middle of the night. It looks like the job was running fine because almost all the backups are there. I've searched and not found a resolution to this error. I checked the event log and don't see any issues and even tried rebuilding the maintenance plans.
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May 3, 2008
Hi,I need some help. I am getting this error after I complete the asp.net register control and click on the continue button. It crashed when it tries to get it calls this Profile property((string)(this.GetPropertyValue("Address1")));When I look at the stack, it is coming from my ProfileWrapper class which adds user address, city, etc.. from a class which inherits fromSystem.Web.Profile.ProfileBase. From the stack, it is calling the System.Web.Profile and crashed when it tries to open a connection atSystem.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject). I already migrated all aspnet_user, aspnet_roles, etc.. and don't get any connection errors. It is only when I try to get the profile data. This works on my pc, but throws an error on my lunarpage website.Any help is greatly appreciated.Thanks,AJAn 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)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: 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)Source Error:Line 100: public virtual string Address2 {Line 101: get {Line 102: return ((string)(this.GetPropertyValue("Address2")));Line 103: }Line 104: set {Source File: c:windowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files
oot 021d50639a6858cApp_Code.54nvluyo.1.cs Line: 102Stack Trace:[SqlException (0x80131904): 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)] System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +435 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 System.Web.DataAccess.SqlConnectionHolder.Open(HttpContext context, Boolean revertImpersonate) +84 System.Web.DataAccess.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation) +197 System.Web.Profile.SqlProfileProvider.GetPropertyValuesFromDatabase(String userName, SettingsPropertyValueCollection svc) +782 System.Web.Profile.SqlProfileProvider.GetPropertyValues(SettingsContext sc, SettingsPropertyCollection properties) +428 System.Configuration.SettingsBase.GetPropertiesFromProvider(SettingsProvider provider) +404 System.Configuration.SettingsBase.GetPropertyValueByName(String propertyName) +117 System.Configuration.SettingsBase.get_Item(String propertyName) +89 System.Web.Profile.ProfileBase.GetInternal(String propertyName) +36 System.Web.Profile.ProfileBase.get_Item(String propertyName) +68 System.Web.Profile.ProfileBase.GetPropertyValue(String propertyName) +4 ProfileCommon.get_Address2() in c:windowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files
oot 021d50639a6858cApp_Code.54nvluyo.1.cs:102 ProfileWrapper..ctor() in d:inetpubvhostsjavcentral.comhttpdocsApp_CodeProfileWrapper.cs:242 ProfileDataSource.GetData() in d:inetpubvhostsjavcentral.comhttpdocsApp_CodeProfileDataSource.cs:17[TargetInvocationException: Exception has been thrown by the target of an invocation.] System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) +0 System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) +72 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +308 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +29 System.Web.UI.WebControls.ObjectDataSourceView.InvokeMethod(ObjectDataSourceMethod method, Boolean disposeInstance, Object& instance) +480 System.Web.UI.WebControls.ObjectDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1960 System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +17 System.Web.UI.WebControls.DataBoundControl.PerformSelect() +149 System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +70 System.Web.UI.WebControls.FormView.DataBind() +4 System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82 System.Web.UI.WebControls.FormView.EnsureDataBound() +163 System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +69 System.Web.UI.Control.EnsureChildControls() +87 System.Web.UI.Control.FindControl(String id, Int32 pathOffset) +21 System.Web.UI.Control.FindControl(String id) +9 CustomerDetailsEdit.OnPreRender(EventArgs e) in d:inetpubvhostsjavcentral.comhttpdocsUserControlsCustomerDetailsEdit.ascx.cs:60 System.Web.UI.Control.PreRenderRecursiveInternal() +86 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2041
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Jan 22, 2008
My site works fine in VWD2008 express, but I get this error when I try to use it on my live website.
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.
According to this article: http://support.microsoft.com/kb/914277 I am supposed to:
1.
Click Start, point to Programs, point to Microsoft SQL Server 2005, point to Configuration Tools, and then click SQL Server Surface Area Configuration.
Ok, there is no such program in this folder. The only thing in there is "SQL Server Error and Usage Reporting"...
The other thing I am greatly concerned with is this: All is want is for my webpages to be able to access my database for user authentication. I DO NOT want to grant the internet rights to remote connect to my database.
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Apr 18, 2007
Can I connect from a SQL Server 2005 database to a SQL Server 2000 database, without establishing a linked server connection.
I need to fire a SELECT query on a SQL Server 2000 database, but don't want to add it as a linked server. Is there any way I can do this or its not possible??
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Jul 12, 2006
Hi
I have two machines, the one has Windows 2003 server and the other has Windows Xp Pro on.
The 2003 one has SQL Standard Edition 2000 on where as the XP Pro has MSDE 2000.
I'm trying to run a windows based app from the 2003 server and it connects to a database on the XP Pro PC.
When running the application i keep getting the following exception:
"A Transport-Level error has occured when sending the request to the server (Provider: Named Pipes Provider, error: 0 - The specified network name is no longer available)
After using Preformance monitor on the XP machine it seems that when the app starts and the user logins in it make a SQL connection but then the connection is lost then the exception pops up. then i click continue and try it again then it works, then a couple of secs when using the system it pops up again. The Performance Monitor Test shows that the SQL connection keep being lost. The network is fine. its has something to do with SQL and Named Pipes and stuff.
When running the app on the Xp machine and the Connection is made to the 2003 machine there is no problem.
There are other connection made to the Windows XP Machine but i doubt that it affects the app.
The Windows firewall is off as well.
Please can anyone help.
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Dec 10, 2007
I get the following error and have been trying to figure out why I keep getting it. Initially, I had placed my project under wwwroot folder and ran it under IIS and it gave this error. Then I moved it to my local C drive and same thing. I am sharing this project with two other co-workers and all our config files and code files are same...they don't get this error but I do. I checked that SQL Server Client Network Utility has TCP/IP and the 'Named Pipes' enabled. I thought maybe I have setting in the Visual Studio 2005 that I'm not aware of that's causing this problem...it can't be the server since my co-workers aren't having this error and can't be anything in the code since all of us are sharing this project through vss. I dont' think using different version of .net framework can create this error. I changed the version from 2.0 to use 1.1x and it gave same error... Any help would be greatly appreciated. Thanks in advance.
Server Error in '/RBOdev' Application.
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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
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: 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[SqlException (0x80131904): 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)]
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +739123
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188
System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +685966
System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +109
System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +383
System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181
System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +170
System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +130
System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28
System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424
System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +496
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105
System.Data.SqlClient.SqlConnection.Open() +111
System.Web.DataAccess.SqlConnectionHolder.Open(HttpContext context, Boolean revertImpersonate) +84
System.Web.DataAccess.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation) +197
System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider.GetConnectionHolder() +16
System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider.LoadPersonalizationBlobs(WebPartManager webPartManager, String path, String userName, Byte[]& sharedDataBlob, Byte[]& userDataBlob) +195
System.Web.UI.WebControls.WebParts.PersonalizationProvider.LoadPersonalizationState(WebPartManager webPartManager, Boolean ignoreCurrentUser) +95
System.Web.UI.WebControls.WebParts.WebPartPersonalization.Load() +105
System.Web.UI.WebControls.WebParts.WebPartManager.OnInit(EventArgs e) +497
System.Web.UI.Control.InitRecursive(Control namingContainer) +321
System.Web.UI.Control.InitRecursive(Control namingContainer) +198
System.Web.UI.Control.InitRecursive(Control namingContainer) +198
System.Web.UI.Control.InitRecursive(Control namingContainer) +198
System.Web.UI.Control.InitRecursive(Control namingContainer) +198
System.Web.UI.Control.InitRecursive(Control namingContainer) +198
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +692
Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832
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Jan 24, 2008
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,
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Apr 10, 2008
Hi,I have SQL Server Express Edition. I tried working out some ASP.NET Labs in my local system. Here is the link of the Virtual Lab which I tried. http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?EventID=1032286906&EventCategory=3&culture=en-US&CountryCode=USI recieve this error in my local system. 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 tried working out solutions from various websites. But the no solution is effective. Could anyone help me in solving this issue.
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Mar 9, 2007
All --
Please help.
I have some questions about connection strings.
BACKGROUND...
Note that I am using the "SQL Native Client OLE DB Provider", SQL Sever 2005 Express, ASP.NET, C#.NET, and VS.NET 2005.
Note that I do not want to use the "Attach a database file" type of connection string.
Note that I am using the site http://www.ConnectionStrings.com as a reference.
Note that this "Standard security" connection string...<add name="LocalSqlServer" connectionString="Server=MYTESTOFFICESERVERS;Database=MyDatabase;Uid=MyDatabaseUser;Pwd=MyDatabasePassword;" />...does not work and causes the following run-time error...A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)
Note that this "Trusted connection" connection string...<add name="LocalSqlServer" connectionString="Server=MYTESTOFFICESERVERS;Database=MyDatabase;Trusted_Connection=yes;" />...works but is less-than ideal because it uses a Trusted Connection rather than a Username/Password combination.
QUESTIONS...
(A) What exactly does the error in Item 4 mean?
(B) Do 4 and 5 imply that one must use a Trusted_Connection for all SQL Server 2005 Express connection strings when the database does not reside in the web application's App_Data folder or use a "Attach a database file" type of connection string?
(C) Are there any alternatives?
(D) What do you suggest?
Please advise.
Thank you.
-- Mark Kamoski
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Jul 10, 2007
When using jdbc with IntegratedSecurity, I run into this problem when the machine is not part of a domain & gets its IP address via dhcp. Is this expected behavior or a bug in the jdbc driver.
The SQLServer and client application are installed on the same machine and a local admin is logged in, running the client app.
If I change one of the two parameters mentioned above, the connection can be established leading me to believe this may be intentional for security issues. Am I correct?
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Aug 30, 2006
When I create a new odbc connection to a SQL server 2005 Db I get a failure telling me dat de SQL server does not allow remote connections.
How can I allow the server to allow this.
Any help appreciated
regards
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Feb 15, 2008
I created a single step plan that does integrity checks. It fails with the error below. I created a new connection using our clusters virtual sql name.
Executed as user: ACCTCOMsqlagent. ...n 9.00.3042.00 for 64-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. Started: 1:10:06 PM Error: 2008-02-15 13:10:49.02 Code: 0xC00291EC Source: {0CF32F3D-A8D1-492A-9C0F-AD4E0FC67D14} Execute SQL Task Description: Failed to acquire connection "Local server connection". Connection may not be configured correctly or you may not have the right permissions on this connection. End Error Warning: 2008-02-15 13:10:49.02 Code: 0x80019002 Source: OnPreExecute Description: SSIS Warning Code DTS_W_MAXIMUMERRORCOUNTREACHED. The Execution method succeeded, but the number of errors raised (1) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors. End Warning Error: 2008-02-15 13:11:31.26 Code: 0xC0024104 Source: Check Database Integrity Ta... The package execution fa... The step failed.
The agent and db are running under domain accounts and the job is owned by sa.
Thanks for your help.
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Jun 22, 2006
I have a Rounding error: Between flat file connection manager Source & OLE DB Connection Destination (SQL Server 2005) in my Dataflow.
File looks like this lets call column names Col A,B,C,D
70410000 RD1 1223631.92 196042.42
70329000 ICD 11025.84 3353.88
71167300 COL 104270.59 24676.96
flat file connection manager settings: first row Column names then Advanced tab Col A float , Col B float , Col C string ,Col D float ,
OLE DB Connection Destination (SQL Server 2005)
CREATE TABLE [dbo].[PT_CUST_ABR](
[PARTY_NO] [float] NULL,
[PARTY_NAME] [varchar](75) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[TELECOMABR] [float] NULL,
[GENIABR] [float] NULL,
Problem: ColA (Source) Rounding error to PARTY_NO (Destination)
I have a field of text of in a flat file that the flat file connection manager Source picks up correctly €œ70000893€?
However when it gets the OLE DB Connection Destination the data has changed to 70000896. That€™s before its even Written to the database.
The only clue that something is wrong in the middle is the great Data viewer shows the number as 7.000009E+07
Other clues looking at the data it appears there is a rounding error on only the number that dont end in 00
ColA (Source) PARTY_NO (Destination)
71167300 71167296
70329000 70329000
70410000 70410000
Any ideas people?
Thanks in advance
Dave
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Apr 2, 2008
Let me set the stage of my testbed configuration: On Windows XP SP2, my default connection to the Internet is via wireless express card modem using EV-DO via Verizon Wireless. Let's call this connection A. I also have a traditional wireless network connection (802.11g) that is always enabled. Let's call this connection B. Connection A is always connected during normal business hours. Connection B is not and is often searching for a wireless network to connect to when nothing is in range.
Yesterday, connection B was continuously trying to connect to a wireless network not under my control, meaning that the connection was never established and notification messages continually popped up to complain of this fact. Over time, I've learned to ignore these messages and go on doing my daily work without much thought of the possible implications.
Then, things started to get odd. I was running our application, WebWatchBot, to perform some simple tests of various websites and servers, when I started to get messages from the application that database connectivity was lost, which is a message that pops up to inform the user that the connection is forcibly dropped by SQL Server. After a few moments, the connection to the database was re-established and the message went away. Since I was actually working with SQL Server, I thought it was an anomoly, so I continued on. Then, it happened again. And again. Then, I noticed that the "database connectivity lost" message started to coincide with the wireless connection's (connection B) inability to connect with a wireless network.
Why would this be happening? The database and application are on the same exact computer. The connection to the database is via ODBC drivers over tcp/ip, but why would connection B affect this?
Some added information that may prove useful:
Client side:
What is the connection string in you app or DSN? (please specify)
DRIVER=SQL Server;SERVER=HIGHNOTEWEBWATCHBOT;Database=WebWatchBot;UID=sa;PWD=*****
If client fails to connect, what is the client error messages? (please specify)
[Microsoft][ODBC SQL Server Driver]Communication link failure
Is the client remote or local to the SQL server machine? [Remote | Local]
Can you ping your server? [YES | NO ]
In cmd.exe console, type €œping -a <server_name>€?.
Can you telnet to your SQL Server? [YES | NO, please specify the error message ]
In cmd.exe console, type €œtelnet <server name> port, where port can be 135, 445 or sql_server_tcp_port. If your cmd.exe console turns into a complete black screen with a cursor flushing on top left corner, you are connected. Type ctrl+€™[€˜ to bring up telnet prompt and type €œquit€? <enter>.
What is your client database provider? [SNAC | MDAC | ADO.NET1.0 | ADO.NET2.0| other (please specify] Or/And, what is your client application? [SQL Management Studio | SQL Profiler | Visual Studio | Other (please specify): WebWatchBot - Website and Server Monitoring Software
Is your client computer in the same domain as the Server computer? (Same domain | Different domains | WorkGroup)
What protocol the client enabled? [Shared Memory | TCPIP | Named Pipes].
Do you have aliases configured that match the server name portion of your connection string? NO
Do you select force encryption on server and/or client? NO
[2] Server side:
What is the MS SQL version? [ SQL Server 2005 | SQL Sever 2005 ]
What is the SKU of MS SQL? [Enterprise | Standard | Workgroup | Express (or MSDE) | other (please specify)].
Microsoft SQL Server Management Studio 9.00.3042.00
Microsoft Analysis Services Client Tools 2005.090.3042.00
Microsoft Data Access Components (MDAC) 2000.085.1117.00 (xpsp_sp2_rtm.040803-2158)
Microsoft MSXML 2.6 3.0 4.0 5.0 6.0
Microsoft Internet Explorer 7.0.5730.11
Microsoft .NET Framework 2.0.50727.832
Operating System 5.1.2600
What is the SQL Server Protocol enabled? [Shared Memory | TCPIP | Named Pipes ]. Use SQL Server Configuration Manager to configure it and check ERRORLOG or event log to confirm.
Does the server start successfully? [YES | NO] If not what is the error messages in the SQL server ERRORLOG?
If SQL Server is a named instance, is the SQL browser enabled? [YES | NO]
What is the account that the SQL Server is running under?[Local System | Network Service | Domain Account]
Do you make firewall exception for your SQL server TCP port if you want connect remotely through TCP provider? [YES | NO | not applicable]
Do you make firewall exception for SQL Browser UDP port 1434? In SQL2000, you still need to make firewall exception for UDP port 1434 in order to support named instance.[YES | NO | not applicable ]
[2a] Tool Used to Connect
What tool or Application are you using to connect to SQL Server (eg: Visual Studio, SQL Server Management Studio, SQLCmd.exe, OSQL, etc) and especially the version of SQL Server (Express, Workgroup, Standard, Enterprise, Developer)
[3] Platform:
What is the OS version? [Windows XPSP2 | Windows 2003 | Windows 2000 | Windows 98 | others (please specify ) ].
Do you have third party antivirus, anti-spareware software installed? [Symantec | Norton | other (please specify)].
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Feb 19, 2015
I have a child package where the ConnectionString property of a Connection Manager is set by a Parent Package Variable Configuration. I set up a script task that brings up a message box with the value of the ConnectionString property right before the dataflow task.
MessageBox.Show(Dts.Connections["CPU_*"].ConnectionString.ToString());When I run the parent package, the message box shows that the connection string is changing with every iteration, but in the dataflow it always draws the data from the same source.
The connection manager is an ADO.Net type, RetainSameConnection is set to False, and I've been researching this for days.
(Update 2/23/2015): To make this stranger, when I look at the diagnostic logs, they tell me that when the new connections are being opened they are using the new connection strings.
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Aug 11, 2005
Dear members,I'am thinking about the "best" way to connect to my sql-server viaADO.Net (if there is a best way).My application uses the sql-server very intensively. At the momentevery database-operation opens a connection, executes and then closesthe connection.Another way would be to use only a single connection to the database,which is opened when the application starts.What do you think is the better way to get a high performing sqlserver: using one single application connection vs. using oneconnection for every operation?Cheers, Sebastian
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Jun 10, 2007
I dont have the SQL EXPRESS installed instead I have SQL Standard Edition.
I have two SQL Server instances installed.
1- UserLT (this is sql 2000)2- UserLTSQL2005 (this is SQL 2005 named instance)
But when i try to add a database to my VS website project I get the following error:
Connection 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: go.microsoft.com/fwlink/?linkId=4925
I went in Tools>Opetions>DataBase tools>Data Connection>Sql Server Instance Name (blank for default)
and changed the "SQLEXPRESS" to "USERLTSQL2005".
But I still get the same error message. Any ideas how i can resolve this issue?
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Aug 7, 2005
HiI'm a complete sql/asp.net newbie and want to try this tutorial:http://beta.asp.net/GuidedTour/First I installed:Visual Web Developer 2005 Express Edition Beta 2systemsettingssoftware shows the "sql server 2005 express edition ctp (sqlexpress)" installedmmcservice shows me the SQL Server (SQLExpress) is runningFollowing the guided tour I use the commandline, type cmd, and type in the commandbox: "C:Program FilesMicrosoft SQL Server90ToolsinnSQLCMD90" -S "localhostSqlExpress"Instead of localhost I also tried computername.smallbusiness.local (thats my fully domain name). However I always receive the error:
Named Pipes Provider: Could not open a connection to SQL Server [2]Thank you very much for all your help
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Apr 15, 2008
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this
I use Microsoft Windows Vista Home Professional
I have already installed to my computer Microsoft SQL Server 2005 and SQL Serves Express. I used to be successful to connect to the SQL Server but now I CAN NOT.
Not: I try to run SQL Server 2005 but I can not, even I logged on to my computer with an administrator rights. On the other hand I can start and stop the SQL Server Express easily.
As a result, how can I solve this problem.
Thanks in advance.
Bilgin Kılıç
Additional Details
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)
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Mar 28, 2007
Hi!
I have developed a database in MS SQL Server 2005 Express, to which I would require only bulkadmin server role from an external java application, because I only need to update rows, insert values or use select queries in the database.
The problem is that, using either the Microsoft JDBC Driver 1.1 or the Java JDBC ODBC Driver and the Windows XP Data Base (ODBC) configurations, I need a user with sysadmin server role inside Sql Server, otherwise JDBC won't connect to the database using the selected user. Even if I leave the sql login with setupadmin or any server role lower than sysadmin, the connection is refused.
Is there no way to connect using JDBC to MS Sql Server 2005 other than granting the connected user sysadmin rights? My code looks as follows:
Code Snippet
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://FIREBLADE\SQLEXPRESS";
String user = "username";
String password = "password$$";
Connection conn;
Class.forName(driver);
conn = DriverManager.getConnection(url,user,password);
if (conn != null)
System.out.println("SQL Server Connection established ...");
I have heard that Java JDBC connections to Microsoft require high-level access.
Any informed answer is more than welcome. Thanks for reading my post!
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Jan 11, 2006
hello,
i've installed SQL server 2005 express and Visual web developper 2005 express.
when i whant to create a database in VWD the following error occures:
connection 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: go.microsoft.com/fwlink/?linkId=49251
i searched the internet but can't find the solution, i already reinstalled my complete workstation but the problem stays.
please help!
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May 14, 2015
I need to do testing on capturing connection coming from outside using Profiler. Basically I need to do something from other SQL servers connecting to this SQL server and test if it is captured by profiler.
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Aug 11, 2015
In SQL 2008 R2, if we clone an environment including SQL server, the maintenance plans retain a connection string to the source/original server they got cloned from and are not editable. But, I was able to use a work around by editing them in BIDS and saving them back on the server. But now with 2014, I am facing two issues:
1.I still can edit the package to correct the server connection, with SSDT; but the option to save back to the server is not available any longer!
2.I used to be able to see all my plans under SSIS in 2008 R2 but not in 2014 now. Although, they are listed in SSMS!
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Dec 25, 2007
Hi!!
I'moving my asp application to a new hosting server.
So when i tried the setup locally with the live DB & application in my test machine...
The DB access is denied when application tries to hit the DB.
DB is in seperate machine with SQL Server 2000 & application(ASP) is in Windows server 2003.....
Kindly help me with your suggestions....on what went wrong?
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Jan 10, 2007
I am getting the above error when I try to create Notificatioin services new Instance.
Additional Information is
Failed to connect to server ABC(Microsoft.SqlServer.ConnectionInfo)
An error occured while establishing connection to the server.When connecting to SQL Server 2005, this failure may be caused by the fact that under default settings SQL Server deoes not allow remote connections.(Provider : Named Pipes Provider, error 40 -could not open connection to SQL Server)(Microsoft SQL Server error: 53)
Please help me I am new to SQL Server 2005.I can't able to proceed.
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Oct 17, 2007
I'm getting the following error when launching the database mirroring monitor and attempt to connect to my database.
TITLE: Connect to Server
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Cannot connect to dborat01.hs.pitt.edu.
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ADDITIONAL INFORMATION:
SQL Server replication requires the actual server name to make a connection to the server. Connections through a server alias, IP address, or any other alternate name are not supported. Specify the actual server name, 'xxxxxx'. (Replication.Utilities)
------------------------------
BUTTONS:
OK
------------------------------
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Mar 8, 2008
Hi,
I€™ve developed a BI system using the SQL Server 2005 Developer€™s Edition.
SSAS, SSIS and SSRS have been added to a SQL Server 2005 Standard Edition Server in preparation for delivering the developed database to this live environment.
So I am able to connect directly to the Database Engine, SSAS, SSIS and SSRS successfully from the actual SQL Server 2005 Standard Edition box which is sat on a Windows 2003 Server operating system.
However when I launch SQL Server Management Studio from a desk top PC which is connected to the SQL Server Standard Edition box I can€™t connect to either SSIS or SSRS, however I can connect to the Database Engine and it also seems that I can connect to SSAS OK.
I am using Windows Authentication where the I used a SQL Server account which exists with €œsysadmin€? permissions and this SQL Server account has the same login name as the Windows Server 2003 desktop login.
What do I do next please?
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