Dbnetlib Connectionopen Sql Server Error
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Dbnetlib Connectionopen (connect()). Sql Server Does Not Exist Or Access Denied. 2012
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Dbnetlib Connectionopen (connect()). Specified Sql Server Not Found
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Sql Error Message Dbnetlib Connectionopen (connect()). Sql Server Does Not Exist Or Access Denied
June 2011 May 2011 April 2011 March 2011 February 2011 January 2011 What I Learnt @ Work SQL SERVER connectivity error: SQL Server does not exist or access denied Posted on 16 January 2012 Comments Briefcase Print https://support.microsoft.com/en-us/kb/328306 Recently I was troubleshooting a connectivity issue in a development environment from an application. The application was using the connection string as "Provider=sqloledb;Data Source=myserver\instance1,1433;Network=DBMSSOCN;Initial Catalog=mydb;Integrated Security=SSPI;" I was able to connect to the SQL SERVER from SSMS, however when connecting from an application it was throwing the error [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied This is very generic one and can happen due to many reasons like (1) Account may not have access or http://www.sqlservercentral.com/blogs/whatilearntatwork/2012/01/16/sql-server-connectivity-error-sql-server-does-not-exist-or-access-denied/ password might be wrong (2) Connection might be blocked by a firewall (3) Since it is a named instance, the port might be different. In some cases it might be dynamic also, for which the SQL Server Browser service should be up and running. Looking at the connection string, everything looked good except for the "Network". I had no idea of what it is. Googling led me to this KB article from Microsoft which clearly explains what it is. Basically when an application is trying to connect to SQL SERVER, if one protocol fails then it tries to connect with another protocol. Example, assuming TCP/IP is enabled as primary and Named Pipes as secondary. When an application tries to connect to SQL SERVER, it first tries with TCP/IP. If that did not succeed, it tries with Named Pipes. If that also fails, then only it throws the error. However, we can force the application to use only one protocol and that is done by the "Network" keyword in the connection string. This article defines all the options available for "Network". In my case the option "DBMSSOCN" corresponds to TCP/IP and it was disabled in the development machine. Enabling it, using this article, fixed the issue. Comments Leave a comment on the original post [skamie.wordpress.com, opens in a new window] Loading comments... Copyright © 2002-2016 Simple Talk Publishing. All Rights
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about http://serverfault.com/questions/20605/cant-access-sql-server-2008-from-workstations-but-can-from-server hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Can't access SQL Server 2008 from workstations, but can from server up vote 0 down vote favorite sql server We have an app that can use mssql2k or 2k8. We've been using 2k but I decided to try 2k8 to compare. I installed in on our win2k3 server alongside mssql2k. In the ODBC applet on the server, I was able to set up access to 2k8, and it passes the test at the end successfully, whether I tell it to use Windows Authentication or an sql login. The latter is how the app always accessed mssql2k. The app dbnetlib connectionopen (connect()) works fine from the server, but when I try it on a workstation (winxpsp3), I get a window titled, "Microsoft SQL Server Login" that says: Connection failed: SQLState: '01000' SQL Server Error: 53 [Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionOpen (Connect()). Connection failed: SQLState: '08001' SQL Server ERror: 17 [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied. Then I get the ODBC login dialog, which I can't get to login correctly (I just keep getting the same error above), even copying and pasting a password after resetting it on the server, and whether "trusted" is checked or not. "Options" is disabled. The server was straight SERVERNAME for mssql2k, but for mssql2k8 it's called SERVERNAME\mssql2008. That works on the server, why not on the workstation? (Which I'm logged in as the same person on, BTW.) windows-server-2003 sql-server sql-server-2008 login share|improve this question edited Jun 5 '09 at 16:27 splattne 23.8k1685138 asked Jun 5 '09 at 16:10 Kev 48931639 add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted See this related question: How to enable remote connections for SQL Server 2008? share|improve this answer edited Mar 6 '14 at 14:29 AminM 1459 answered Jun 5 '09 at 16:14 Justin Scott 7,88011735 Thanks, it ended up being that TCP/IP wasn't enabled (remote connections already were, though, for whatever reason.) –Kev Jun 5 '09 at 20:40 (I tried enter