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How to configure Database mirroring for use with ODBC applications?
If you have an ODBC application that is connecting to a mirrored database and if The application uses a connection string without a database name ( for e.g: dsn=ssistest;uid=ssistest;pwd=*********)...
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Timeouts when connecting to Named Instances
When connecting to a SQL Named Instance, you may encounter a Timeout error when trying to connect to it if the client is Vista or Windows 2008 with the client Firewall enabled. This particular issue...
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How It Works: Creating An EndPoint Adds An Entry To SysLogins
My SQL Server does not have individual windows users established as separate logins. Instead it has the Domain\SQLUsers group established as a WINDOWS GROUP login. You can review your mappings using...
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TCP Chimney Offload – Possible Performance and Concurrency Impacts to SQL...
TCP Chimney is enabled by default if you apply Windows Server 2003 Sp2. This is an operating system feature that provides capability to offload TCP/IP packet processing from the processor to the...
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RSWindowsNegotiate and 401.1 Error when using RS 2008
While I was setting up one of my demos for SQL PASS, I starting hitting 401.1 errors. I was setting up a SharePoint Intergrated setup with Reporting Services. I knew I had a distributed environment,...
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SQL 2005 JDBC Driver and Database Mirroring
We ran into some interesting situations with the SQL 2005 JDBC Driver (v1.2) and it's use with failover partners. Take the following connection string:...
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How to troubleshoot leaked SqlConnection objects (.NET 2.0) - Part 1
One of my colleagues, Kamil Sykora, compiled a document that goes through how to troubleshoot leaked SqlConnection objects (from a .NET 2.0 perspective). It was a fairly large document, so I’m not...
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How to troubleshoot leaked SqlConnection Objects (.NET 2.0) - Part 2
In the last post in this series, we looked at how we can determine that our Connection pool was exhausted. In this post I'm going to go a little deeper into the Internal connection itself and how we...
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Searching for Duplicate SPN's got a little easier
We get a lot of calls related to Kerberos configuration, and I'm planning to write more about our experiences and troubleshooting techniques for these types of issues across the box (Engine, AS and...
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When in doubt, Reboot!
I tend to get quite a bit of Kerberos related cases. These are related across the box, from the Engine, to Reporting Services to just straight connectivity with custom applications. I had one given...
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Report Builder and Firewalls
We have had a few customer calls come in on this scenario that I thought this needed to be documented a bit. Scenario: In this scenario, the customer has a data source defined on the Report Server....
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SQL 2008 - New Functionality to the dm_os_ring_buffers for Connectivity...
Hi, I wanted to make everybody aware of this feature in SQL 2008. Are you tired of having to use NetMon to narrow down a connectivity issue with SQL Server 2008 or have to wait for an elusive...
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‘Cannot Generate SSPI Context’ and Service Account Passwords
Was working with Keith Elmore on one of our internal processes and he was hitting a “Cannot generate SSPI context” when trying to connect from Management Studio. I also saw this come up in a double...
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How to get a x64 version of Jet?
We have had a number of people ask about how they can get the Jet ODBC driver/OLE DB Provider as 64 bit. Windows only ships the 32 bit versions of these. The answer is that the windows versions won’t...
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What SPN do I use and how does it get there?
This month has turned into another Kerberos Month for me. I had an email discussion regarding SPN’s for SQL Server and what we can do to get them created and in a usable state. I thought I would...
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Error 18056 can be unwanted noise in certain scenarios
I saw a lot of hits on the web when I searched for the Error message 18056 with State 29. I even saw two Microsoft Connect items for this issue filed for SQL Server 2008 instances:...
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My Kerberos Checklist…
I’ve had numerous questions regarding Kerberos, both internally within Microsoft and with Customers. It continues to be a complicated topic and the documentation that is out there can be less than...
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How It Works: Error 18056 - The client was unable to reuse a session with...
This message has come across my desk a couple of times in the last week and when that happens I like to produce blog content. The error is when you are trying to use a pooled connection and the reset...
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How It Works: Error 18056 - The client was unable to reuse a session - Part 2
I have had several questions on my blog post:...
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SharePoint Adventures : Using Kerberos with the Report Server
Previous Post: SharePoint Adventures : Setting up Reporting Services with SharePoint Integration In the previous post, I walked through getting RS 2008 R2 Integrated with SharePoint 2010. What I didn't...
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