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Interpreting the counter values from sys.dm_os_performance_counters
The performance counters exposed by SQL Server are invaluable tools for monitoring various aspects of the instance health. The counter data is exposed as a shared memory object for the windows...
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How It Works: Maximizing Max Degree Of Parallelism (MAXDOP)
I was working on an index build issue for an 80 CPU system and kept seeing that only 64 CPUs were getting used. I had carefully studied sys.dm_os_spinlock_stats and sys.dm_os_wait_stats along with...
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Error during installation of an SQL server Failover Cluster Instance
A common issue I've run into while helping with SQL Server Failover Cluster (FCI) installations is the failure of the Network Name. In the following post I'll discuss a bit of background, the common...
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Invalid or loopback address when configuring SharePoint against a SQL Server
I was presented with a connectivity issue when trying to configure SharePoint 2013 using a CTP build of SQL 2014. They got the following error when they were it was trying to create the Configuration...
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Microsoft CSS @ PASS Summit 2013
During October 15th-18th, the US PASS Summit 2013 will be held in Charlotte, NC at the Charlotte Convention Center. The Microsoft CSS team has a long history with PASS. We have been speaking and...
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Every time I ‘ATTACH DATABASE’ SQL logs error 1314 for SetFileIoOverlappedRange
Turns out this is an issue in the SQL Server code and the error is a bit noisy during attach database.When opening the database files, SQL Server calls SetFileIoOverlappedRange (when enabled properly)...
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SQL Connection Pool Timeout Debugging
This is a follow up to two blog posts from back in 2009 which talked about leaked connections. In Part 1 and Part 2 of that post, it was about how to determine that you actually filled your pool....
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Cumulative Update 2 to the RML Utilities for Microsoft SQL Server Released
Version 9.04.004 of the RML Utilities for Microsoft SQL Server has been released. This release of the RML Utilities provides support for: SQL Server 2005SQL Server 2008SQL Server 2008 R2SQL Server...
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All about RollbackSnapshotTempDB...
I’ve been recently involved in several cases where Databases named RollbackSnapshotTempDB +<someGUID> were generating confusion. The purpose of this post is to clarify their origin and use and...
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Spatial Indexing: From 4 Days to 4 Hours
Over the past month I have been involved in the optimization of a Spatial Index creation/rebuild. Microsoft has several fixes included in the SQL Server 2012 SP1 CU7 ReleaseI have been asked by...
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Kerberos Configuration Manager updated for Reporting Services
Back in may, we released the Kerberos Configuration Manager tool to help with diagnosing and correcting Kerberos related issues for SQL Server. Today, I’m happy to announce that version 2 of this tool...
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How Simple Parameterization works
Recently we got a customer who upgraded from SQL Server 2005 to 2008. But their performance degraded greatly. What happened was that they had an update query that was run many times in a batch. The...
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Spatial Index is NOT used when SUBQUERY used
I have found the following link to be invaluable when working with and tuning SQL Server Spatial indexes: http://technet.microsoft.com/en-us/library/bb895265.aspxHowever, the link is not as clear as...
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As The World Turns: SQL Server NUMA Memory Node and the Operating System...
It felt a bit like ‘As The World Turns’ as I unraveled how the following worked so the title is a bit of a tribute to my grandmother. She could not miss here ‘stories’ in the afternoon.ProximityBefore...
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Can’t Connect to SQL when provisioning a Project App in SharePoint
The customers issue was that they were trying to provision a Project site within the Project SharePoint Application. This was done via a PowerShell script that they ran on one of the SharePoint App...
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sp_reset_connection – Rate Usage (Don’t fight over the grapes)
Discussions surrounding sp_reset_connection behavior and usage come up all the time and over the years I have discussed the subject 100s of times with customers. Blogs, API documentation and Books...
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SQL Nexus 4.0 Released to codeplex
We have just released SQL Nexus 4.0 (https://sqlnexus.codeplex.com/) which supports latest SQL Server (2012) with enhanced reports. In addition to read release notes, make sure you also read the top...
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Don’t Rely On a Static IP Address for Your SQL Database
I’ve seen a number of customers open support incidents because they couldn’t connect to their SQL Database server which was ultimately due to the incorrect assumption that the server’s IP address is...
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SQL Server 2014’s new cardinality estimator (Part 1)
One of the performance improvement in SQL Server 2014 is the redesign of cardinality estimation. The component which does cardinality estimation (CE) is called cardinality estimator. It is the...
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I think I am getting duplicate query plan entries in SQL Server’s procedure...
Before the post dives into the subject I need to point out that Keith did most of the work. I just kept pestering him with various scenarios until he sent me the e-mail content I needed. Thanks...
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