Defragmenting SQL Server 2008+ using ALTER INDEX

In SQL 2009 DBCC INDEXDEFRAG will no longer work as Microsoft have removed the command. You need to user ALTER INDEX instead:

CREATE PROCEDURE sjh_defragment_indexes_2008
(
    @maxfrag FLOAT
)
AS
 
/* Simon Hughes 15 May 2010
 
For SQL 2008+
This stored procedure checks index fragmentation in a database and defragments
indexes whose fragmentation fall above a specified threshold: @maxfrag
 
Must be run in the database to be defragmented.
 
exec sjh_defragment_indexes_2008 5
*/
 
SET NOCOUNT ON
SET XACT_ABORT ON
 
-- Write start time for information purposes
PRINT 'Started defragmenting at: ' + CONVERT(VARCHAR, GETDATE())
 
-- Check fragmentation
DECLARE @execstr NVARCHAR(255)
DECLARE lcsr CURSOR local fast_forward READ_ONLY FOR
    SELECT  'ALTER INDEX [' + i.name + '] ON [' + so.name + '] REORGANIZE;' AS execstr
    FROM    sys.sysobjects AS so
            INNER JOIN sys.dm_db_index_physical_stats(DB_ID('bybox'), NULL, NULL, NULL, 'LIMITED') AS phystat
            INNER JOIN sys.indexes AS i
                ON i.object_id = phystat.object_id
                   AND i.index_id = phystat.index_id
                ON so.name = OBJECT_NAME(i.object_id)
    WHERE   (i.name IS NOT NULL)
            AND (so.type = 'U')
            AND (phystat.avg_fragmentation_in_percent > @maxfrag)
 
OPEN lcsr
FETCH NEXT FROM lcsr INTO @execstr
 
WHILE @@FETCH_STATUS = 0
BEGIN
    EXEC sp_executesql @execstr
    FETCH NEXT FROM lcsr INTO @execstr
END
 
CLOSE lcsr
DEALLOCATE lcsr
 
-- Report on finish time for information purposes
PRINT 'Finished defragmenting at: ' + CONVERT(VARCHAR, GETDATE())
GO

Download code here.

Popular posts from this blog

Execution of user code in the .NET Framework is disabled

I was testing our new SQL Server 2008 enterprise cluster today and managed to get the following SqlException running a C# application: "Execution of user code in the .NET Framework is disabled. Enable "clr enabled" configuration option. The statement has been terminated." The solution is to run the following: EXEC sp_configure 'show advanced options' , '1' ; go RECONFIGURE ; go EXEC sp_configure 'clr enabled' , '1' go RECONFIGURE ; -- Turn advanced options back off -- EXEC sp_configure 'show advanced options' , '0'; GO
Read more

Service Broker sys.transmission_queue clean up

If you’re developing a Service Broker application and you misspell your services, forget to create a master key, or do any of the many things that result in your messages not being delivered, then your transmission queue will fill up. Due to the nature of service broker, errors don't occur at the client but rather your messages go in to Service Brokers sys.transmission_queue and are then subsequently processed. If they fail, they stay in the queue. Some errors can be resolved, i.e. missing services. However, others can't, or are just plain difficult. I.e. You've misspelt something, or not used the correct security. To clear your transmission queue you need to end the conversations, this is a handy little script for doing this. Be aware this ends ALL conversations in the queue and so should NEVER be used on a production system. To see how many messages are in your transmission queue, use this SELECT   COUNT ( 1 )   FROM   sys . transmission_queue On my system i7, D...
Read more

What do I use to write software?

I started off with Dbase III, then Borland Turbo C for about 5 years, then when Microsoft Visual Studio v1.0 came out, I moved to that. I've been using Visual Studio ever since. Coding in C++ and have since moved to C# when that came into existance. Do I use component? Yes. Which ones then? Telerik http://www.telerik.com/ Dundas http://www.dundas.com/ Rebex http://www.rebex.net/ I've also used DevExpress reports, but they peg the CPU to 100% on the webservers when exporting an excel spreadsheet with a lot of data in them, and more often than not, cause a timeout on the ASPX page. So I don't like to use them anymore. My essential toolkit consists of: SVN - Subversion source control http://subversion.tigris.org/ Winrar http://www.rarlab.com/ Colour Schemer (web design) http://www.colorschemer.com/online.html SQL Prompt http://www.red-gate.com/ ANTS Profiler http://www.red-gate.com/ NUnit http://www.nunit.org/ Microsoft Visual Studio http://msdn2.microsoft.com/en-gb/vstudio/de...
Read more