March, 2008

As you know the tempdb is used by user applications and SQL Server alike to store transient results needed to process the workload. The objects created by users and user applications are called ‘user objects’ while the objects created by SQL Server engine...

Last week I was teaching a class on snapshot isolation and we discussed the overheads of snapshot isolation. There are three main overheads that you need to be aware of when you enable snapshot isolation read-committed-snapshot on a database. First, each...

You may recall that starting with SQL Server 2005, you have an option available to enable CHECKSUM on the user databases. For details, please refer to http://blogs.msdn.com/sqlserverstorageengine/archive/2006/06/29/Enabling-CHECKSUM-in-SQL2005.aspx ....

So far we had discussed ( http://blogs.msdn.com/sqlserverstorageengine/archive/2008/03/23/minimal-logging-changes-in-sql-server-2008-part-2.aspx ) how minimal logging changes impact when you are moving data from one table to another table. Now let us...

In the previous example http://blogs.msdn.com/sqlserverstorageengine/archive/2008/03/06/minimal-logging-changes-in-sql-server-2008-part-1.aspx , I described minimal logging while moving data from a source table into a heap. You may recall that it requires...

Please refer to the earlier post for the background information on minimal logging. Starting with SQL Server 2008, the minimal logging has been enhanced. These enhancements are available to regular TSQL Insert as well. One of the key customer scenario...

FILESTREAM is disabled by default in SQL2008. Before you can start to use FILESTREAM, you must enable FILESTREAM on the instance of the SQL Server Database Engine. Enabling/configuring FILESTREAM is a bit different from configuring other SQL features...

This blog shows a very simple example to illustrate data fragmentation, measuring it, seeing behind the scene data and steps to address it. I recommend reading the overall series on index fragementation at http://blogs.msdn.com/sqlserverstorageengine...