TechEd Bloggers Database Platform

Why SQL Partition Merge is Slow

SQL Storage Engine Team — Thu, 04 Feb 2010 17:32:51 GMT

SQL Storage Engine Team writes, "...There is a workaround for this when the partitions to be merged are mapped to the same filegroup. In the example above where the intention is to drop a partition it is clear that the destination partition is always empty. The workaround is to..." more

Thu, 04 Feb 2010 17:32:51 GMT

SQL Sample Code on How to Select All Multi-Value Cascading Parameter

PSS SQL Engineers — Tue, 02 Feb 2010 23:52:24 GMT

PSS SQL Engineers writes, "...The example report I’ll be using will make use of the AdventureWorksDW sample database. I will also be using SQL 2008 R2 November Release, but the same will apply to SQL 2008 Reporting Services as well. In my report, I have three multi-value parameters. Each one dependent on the parameter before it (cascading parameters). The parameters are Category, Subcategory and Product, in that order..." more

Tue, 02 Feb 2010 23:52:24 GMT

FILESTREAM in SQL Server 2008 Solves BLOBS Issue

Buck Woody — Fri, 29 Jan 2010 00:22:26 GMT

Buck Woody writes, "...There are really only two ways to do this: store them [binary large objects] in a table structure in the database itself using a binary data type, or store them in the operating system in a file folder...FILESTREAM. In SQL Server 2008...actually combines the two approaches into one..." more

Fri, 29 Jan 2010 00:22:26 GMT

TFS Interface Change Creates New Flow Configuration Data

Willy-Peter Schaub — Thu, 28 Jan 2010 20:28:58 GMT

Willy-Peter Schaub writes, "...in the case of the IServerPathTranslationService interface...introduced a new method that allows the platform to pass the session configuration to be passed to the Translation Service, as is the case for all other services. The new interface definition is as follows..." more

Thu, 28 Jan 2010 20:28:58 GMT

Code Sample Using LINQ to Get Interface Property Implementations

Paulo Morgado — Wed, 27 Jan 2010 17:12:58 GMT

Paulo Morgado writes, "...some code to get the PropertyInfos of a class implementation of an interface. Given this interface...[and]...class...what caught my eye was that, with the above extension methods, I can...retrieve a list of the desired PropertyInfos. Something like this..." more

Wed, 27 Jan 2010 17:12:58 GMT

Big Lesson Passing an ObjectContext by Value or Reference

Julie Lerman — Wed, 27 Jan 2010 16:42:59 GMT

Julie Lerman writes, "...The key difference is that when you pass a variable by value , you are just passing a copy. The originating variable cannot be replaced. When passing by reference, you are working with the actual variable and can replace it...unless you are trying to achieve some specific behavior, you should definitely pass byval. In fact..." more

Wed, 27 Jan 2010 16:42:59 GMT

It's "Context" You Focus on to Build an App the Right Way

Joe Ocampo — Tue, 26 Jan 2010 20:38:43 GMT

Joe Ocampo writes, "...What my buddy and I were missing was context...And that’s where my .NET buddy went wrong. He picked what he thought was a default MVC architecture, when instead it was a reference DDD architecture. His first question should have been, “do I need DDD?”. In his case, decidedly not. In in most cases..." more

Tue, 26 Jan 2010 20:38:43 GMT

How to Access a Database by Attaching

Buck Woody — Tue, 26 Jan 2010 20:28:55 GMT

Buck Woody writes, "...When SQL Server first starts up, it reads (among other things) the master system database...In that database are two things that we care about right now: the logical name of the databases SQL Server knows about and the physical locations for the files that database uses...here’s a simple way to transfer a database from an Instance you don’t have access to into one that you do..." more

Tue, 26 Jan 2010 20:28:55 GMT

Code Ex: Writing Entity References using LINQ to XML

Eric White — Thu, 21 Jan 2010 20:31:25 GMT

Eric White writes, "...there is a super-easy trick/hack to write out entity references. You write a new class (named XEntity, of course) that derives from XText and override the XText.WriteTo(XmlWriter writer) method. Then, when creating your XML tree, you insert these objects as appropriate:..." more

Thu, 21 Jan 2010 20:31:25 GMT

Surprising Tip: Hovering Over the Titles in Activity Monitor

Buck Woody — Thu, 21 Jan 2010 20:03:47 GMT

Buck Woody writes, "...little-known feature in just about every perf tuning class I give, and it’s often a surprise to most of the folks...In SQL Server Management Studio 2008, start the new Activity Monitor. Open one of the “Bands”, such as “Processes”. Move your mouse cursor over one of the header titles and leave it there. If that column is getting information..." more

Thu, 21 Jan 2010 20:03:47 GMT

How to Get a x64 Version of Jet?

PSS SQL Engineers — Thu, 21 Jan 2010 19:19:02 GMT

PSS SQL Engineers writes, "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..." more

Thu, 21 Jan 2010 19:19:02 GMT

Beware Hidden Calculated Members

Teo Lachev — Tue, 19 Jan 2010 19:01:02 GMT

Teo Lachev writes, "The issue affects hidden calculated members and scope assignments where a scope assignment simply ignores hidden calculated members if they are not explicitly referenced by the script. You can easily repro the issue by making the following changes to the Adventure Works script...This issue hit me really hard...had to debug a cube with some 1000+ lines of code..." more

Tue, 19 Jan 2010 19:01:02 GMT

For Crucial Speed and Time Consider 3rd Party for SQL 2008 Backup Compression

Marlon Ribunal — Thu, 14 Jan 2010 20:24:39 GMT

Marlon Ribunal writes, "Summing it all up, the native backup compression of SQL Server 2008 is good enough for backup purposes. But if speed and backup times are critical to your operations, then using third party backup compression tools, such as" more

Thu, 14 Jan 2010 20:24:39 GMT

Setting Security on SQL Hosting a ACS Database

Marnix Wolf — Thu, 14 Jan 2010 19:32:03 GMT

Marnix Wolf writes, "...With these steps the basic security has been altered in such a way that only a small group of people can access this server. Also has the access to the ACS Database been restricted. Of course, need the other groups with Admin access within SQL to be checked out as well..." more

Thu, 14 Jan 2010 19:32:03 GMT

How to Manage the 'Plumbing' in Service Broker

Allen White — Tue, 12 Jan 2010 18:25:32 GMT

Allen White writes, "...I'd like to cover some of the "plumbing" - the components that allow communication between different servers running Service Broker...this set of objects make up the "plumbing" that allow separate instances or servers to communicate with each other..." more

Tue, 12 Jan 2010 18:25:32 GMT

How to Disable all SQL Logging on Packages?

Matt Masson — Thu, 07 Jan 2010 01:30:27 GMT

Matt Masson writes, "...Packages have a LoggingMode property which controls their logging behavior. The setting has three values:..." more

Thu, 07 Jan 2010 01:30:27 GMT

Steps Implementing Service Broker

Allen White — Wed, 06 Jan 2010 22:52:03 GMT

Allen White writes, "...The important thing to remember is that Service Broker sends and receives messages, and then your applications (or stored procedures) handle those messages in some way. It handles them asynchronously, so the sending side doesn't have to wait for the receiving side to acknowledge the message, and it handles them sequentially, so..." more

Wed, 06 Jan 2010 22:52:03 GMT

Resolved - Cannot Generate SSPI Context and Service Account Passwords

PSS SQL Engineers — Wed, 30 Dec 2009 23:02:52 GMT

PSS SQL Engineers writes, "I’m sure other people have known about this type of condition, but in the years that I’ve been here, along with the number of Kerb issues that I’ve troubleshot in the past, this was the first time I had run across this. Thought I would throw it out there to share with everyone in case..." more

Wed, 30 Dec 2009 23:02:52 GMT

Solved SQL 2008 Connectivity Issue

PSS SQL Engineers — Tue, 29 Dec 2009 02:19:06 GMT

PSS SQL Engineers writes, "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 connectivity error to reoccur? A new ring buffer called "RING_BUFFER_CONNECTIVITY' has been added...So if SQL Server 2008 is still online since the connection failure, make sure to capture..." more

Tue, 29 Dec 2009 02:19:06 GMT

Fix for DBMail has Suddenly Stopped Working

PSS SQL Engineers — Fri, 18 Dec 2009 00:42:21 GMT

PSS SQL Engineers writes, "...Customers were running into issues where DBMail would suddenly stop working after doing service pack upgrades to their SQL Servers.This was happening on both SQL 2005 and SQL 2008. The error was also unusual in that the word "timeout" could make you believe we were dealing with a performance issue. Here is what you will see in the SQLAgent.OUT log file...Turns out that the "timeout" is a new field name in..." more

Fri, 18 Dec 2009 00:42:21 GMT