How to make Microsoft SQL Server 2005 and 2008 go faster by querying the Dynamic Management Views (DMVs) to build new indexes and drop ones that aren't being used.

1. Advanced Index Tuning

2. Brent Ozar SQL Server MVPfor Quest Software SQLServerPedia Ed. SQL, SAN, VM admin Dot-com-crash experience Performance freak Twitter @BrentO Blog: www.BrentOzar.com Photo Source http://www.flickr.com/photos/vasta/415625308/

3. Today’s Agenda Passive Tuning Active Tuning Index Compression The Silent Killer Resources and Q&A

4. Passive Tuning with DMVs

5. DMV Tuning Lifecycle

6. Removing Indexes

7. Results

8. Why Are Writes Different?

9. Our Table: Items

10. Indexes On An “Item” Table Index #1: UPC_Code Index #2: SupplierID Index #3: Category QtyInStock Photo licensed with Creative Commons from:http://www.flickr.com/photos/revolute/1944742197/

11. Data In The Index

12. But When It Changes…

13. That’s Why…

14. Our Query

15. A Better Way: Includes CREATE INDEX IX_Category_Includes ON dbo.Items (Category) INCLUDE (QtyInStock)

16. And When It Changes…

17. Query Plan

18. Remember, Never SELECT *

19. Leave a Bread Crumb Trail

20. DMV Tuning Lifecycle

21. Missing Index Query

22. Okay – Now What?

23. When Do We Add Indexes?

24. DMV Tuning Lifecycle

25. Active Tuning: The Wizards

26. Danger! Danger!

27. The End Result CREATE NONCLUSTERED INDEX [_dta_index_Activity_11_1977058079__K1_K4_K7_K5_K3] ON [dbo].[Activity] ( [ServerName] ASC, [ActivityTypeID] ASC, [StatusTypeID] ASC, [StartTime] ASC, [DatabaseID] ASC )

28. Rename Each Index CREATE NONCLUSTERED INDEX [IX_ServerName_ActivityTypeID_StatusTypeID_StartTime_DatabaseID] ON [dbo].[Activity] ( [ServerName] ASC, [ActivityTypeID] ASC, [StatusTypeID] ASC, [StartTime] ASC, [DatabaseID] ASC ) ON [PRIMARY]

29. Makes Ongoing Tuning Easier

30. Active Tuning Summary Don’t just click apply Use smart names Look for overlaps Go passive first

31. SQL 2008 Data Compression

32. Estimating Compression sp_estimate_data_compression_savings @schema_name @object_name @index_id @partition_number @data_compression

33. Index Compression Drawbacks Enterprise Edition only No inheritance No automation

34. The Silent Performance Killer

35. Pretend You’re SQL Server Photo Licensed with Creative Commons From http://www.flickr.com/photos/quacktaculous/3143079032/

36. 13% to 460%Faster

37. Absolutely No: App changes Vendor issues Testing required Guessing on indexes Backfires

38. Not All Unicorns and Roses Standard Edition: Offline Only Enterprise Edition: Most Online Generates a lot of transaction logs

39. The Native Solution

40. The Better Way: T-SQL Code

41. Don’t Reinvent The Wheel

42. http://www.brentozar.com/go/faster