book

Microsoft SQL Server 2012 Performance Tuning Cookbook

Name: Microsoft SQL Server 2012 Performance Tuning Cookbook
Author: Ritesh Shah
ISBN: 9781849685740

by Ritesh Shah

July 2012

Intermediate to advanced

478 pages

10h 3m

English

Packt Publishing

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Microsoft SQL Server 2012 Performance Tuning Cookbook
Table of Contents
Microsoft SQL Server 2012 Performance Tuning Cookbook
Credits
About the Authors
Acknowledgement
Acknowledgement
About the Reviewers
www.PacktPub.com
Support files, eBooks, discount offers and moreWhy Subscribe?Free Access for Packt account holdersInstant Updates on New Packt Books
Preface
What this book covers

What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example codeErrataPiracyQuestions
1. Mastering SQL Trace Using Profiler
Introduction
Creating a trace or workload
Getting readyHow to do it...How it works...There's more...Some background of SQL TraceSQL Trace terms and conceptsSQL TraceSQL Server ProfilerEventEvent classEvent categoryData columnTraceTrace properties and Trace definitionFilterTrace fileTrace tableTrace templateArchitecture of SQL TraceTrace and workloadCommonly-used event classesCommonly-used data columns
Filtering events
Getting readyHow to do it...How it works...There's more...
Detecting slow running and expensive queries
Getting readyHow to do it...How it works...There's more...Trace templates
Creating trace with system stored procedures
Getting readyHow to do it...How it works...
2. Tuning with Database Engine Tuning Advisor
Introduction
Analyzing queries using Database Engine Tuning Advisor
Getting readyHow to do it...How it works...
Running Database Engine Tuning Advisor for workload
Getting readyHow to do it...How it works...There's more...
Executing Database Tuning Advisor from command prompt
Getting readyHow to do it...How it works...There's more...
3. System Statistical Functions, Stored Procedures, and the DBCC SQLPERF Command
Introduction
Monitoring system health using system statistical functions
Getting readyHow to do it...How it works...There's more...
Monitoring with system stored procedure
Getting readyHow to do it...How it works...There's more...
Monitoring log space usage statistics with DBCC command
Getting readyHow to do it...How it works...There's more...
4. Resource Monitor and Performance Monitor
Introduction
Monitoring of server performance
Getting readyHow to do it...How it works...There's more...
Monitoring CPU usage
Getting readyHow to do it...How it works...
Monitoring memory (RAM) usage
Getting readyHow to do it...How it works...
5. Monitoring with Execution Plans
Introduction
Working with estimated execution plan
Getting readyHow to do it...How it works...
Working with actual execution plan
Getting readyHow to do it...How it works...There's more...
Monitoring performance of a query by SET SHOWPLAN_XML
Getting readyHow to do it...How it works...
Monitoring performance of a query by SET STATISTICS XML
Getting readyHow to do it...How it works...
Monitoring performance of a query by SET STATISTICS IO
Getting readyHow to do it...How it works...There's more...
Monitoring performance of a query by SET STATISTICS TIME
Getting readyHow to do it...How it works...There's more...
Including and understanding client statistics
Getting readyHow to do it...How it works...There's more...
6. Tuning with Execution Plans
Introduction
Understanding Hash, Merge, and Nested Loop Join strategies
Getting readyHow to do it...How it works...There's more...
Finding table/index scans in execution plan and fixing them
Getting readyHow to do it...How it works...There's more...
Introducing Key Lookups, finding them in execution plans, and resolving them
Getting readyHow to do it...How it works...There's more...
7. Dynamic Management Views and Dynamic Management Functions
Introduction
Monitoring current query execution statistics
Getting readyHow to do it......How it works...There's more...sys.dm_exec_connections (DMV)sys.dm_exec_sessions (DMV)sys.dm_exec_requests (DMV)sys.dm_exec_sql_text (DMF)sys.dm_exec_query_plan (DMF)sys.dm_exec_cursors (DMF)
Monitoring index performance
Getting readyHow to do it...How it works...There's more...sys.dm_db_missing_index_details (DMV)sys.dm_db_missing_index_groups (DMV)sys.dm_db_missing_index_group_stats (DMV)sys.dm_db_index_usage_stats (DMV)sys.dm_db_index_physical_stats (DMF)
Monitoring performance of TempDB database
Getting readyHow to do it...How it works...There's more...sys.dm_db_session_space_usage (DMV)sys.dm_db_file_space_usage (DMV)
Monitoring disk I/O statistics
Getting readyHow to do it...How it works...There's more...dm_io_virtual_file_stats (DMF)dm_io_pending_io_requests (DMV)
8. SQL Server Cache and Stored Procedure Recompilations
Introduction
Monitoring compilations and recompilations at instance level using Reliability and Performance Monitor
Getting readyHow to do it...How it works...
Monitoring recompilations using SQL Server Profiler
Getting readyHow to do it...How it works...There's more...
9. Implementing Indexes
Introduction
Increasing performance by creating a clustered index
Getting readyHow to do it...How it works...There's more...HeapTable and Index Scan/Seek
Increasing performance by creating a non-clustered index
Getting readyHow to do it...How it works...There's more...
Increasing performance by covering index
Getting readyHow to do it...How it works...There's more...
Increasing performance by including columns in an index
Getting readyHow to do it...How it works...
Improving performance by a filtered index
Getting readyHow to do it...How it works...There's more...
Improving performance by a columnstore index
Getting readyHow to do it...How it works...There's more...
10. Maintaining Indexes
Introduction
Finding fragmentation
Getting readyHow to do it...How it works...There's more...
Playing with Fill Factor
Getting readyHow to do it...How it works...There's more...
Enhance index efficiency by using the REBUILD index
Getting readyHow to do it...How it works...There's more...
Enhance index efficiency by using the REORGANIZE index
Getting readyHow to do it...How it works...There's more...
How to find missing indexes
Getting readyHow to do it...How it works...There's more...
How to find unused indexes
Getting readyHow to do it...How it works...There's more...
Enhancing performance by creating an indexed view
Getting readyHow to do it...How it works...There's more...
Enhancing performance with index on Computed Columns
Getting readyHow to do it...How it works...
Determining disk space consumed by indexes
Getting readyHow to do it...How it works...
11. Points to Consider While Writing Queries
Introduction
Improving performance by limiting the number of columns and rows
Getting readyHow to do it...How it works...See also
Improving performance by using sargable conditions
Getting readyHow to do it...How it works...
Using arithmetic operator wisely in predicate to improve performance
Getting readyHow to do it...How it works...
Improving query performance by not using functions on predicate columns
Getting readyHow to do it...How it works...
Improving performance by Declarative Referential Integrity (DRI)
Getting readyHow to do it...How it works...
"Trust" your foreign key to gain performance
Getting readyHow to do it...How it works...There's more...
12. Statistics in SQL Server
Introduction
Creating and updating statistics
Getting readyHow to do it...How it works...There's more...
Effects of statistics on non-key column
Getting readyHow to do it...How it works...
Find out-of-date statistics and get it correct
Getting readyHow to do it...How it works...There's more...
Effect of statistics on a filtered index
Getting readyHow to do it...How it works...
13. Table and Index Partitioning
Introduction
Partitioning a table with RANGE LEFT
Getting readyHow to do it...How it works...
Partitioning a table with RANGE RIGHT
Getting readyHow to do it...How it works...
Deleting and loading bulk data by splitting, merging, and switching partitions (sliding window)
Getting readyHow to do it...How it works...There's more...
14. Implementing Physical Database Structure
Introduction
Configuring data file and log file on multiple physical disks
Getting readyHow to do it...How it works...
Using files and filegroups
Getting readyHow to do it...How it works...
Moving the existing large table to separate physical disk
Getting readyHow to do it...How it works...
Moving non-clustered indexes on separate physical disk
Getting readyHow to do it...How it works...
Configuring the tempdb database on separate physical disk
Getting readyHow to do it...How it works...
15. Advanced Query Tuning Hints and Plan Guides
Introduction
Using NOLOCK table query hint
Getting readyHow to do it...How it works...
Using FORCESEEK and INDEX table hint
Getting readyHow to do it...How it works...
Optimizing a query using an object plan guide
Getting readyHow to do it...How it works...
Implementing a fixed execution plan using SQL plan guide
Getting readyHow to do it...How it works...
16. Dealing with Locking, Blocking, and Deadlocking
Introduction
Determining long-running transactions
Getting readyHow to do it...How it works...
Detecting blocked and blocking queries
Getting readyHow to do it...How it works...
Detecting deadlocks with SQL Server Profiler
Getting readyHow to do it...How it works...
Detecting deadlocks with Trace Flag 1204
Getting readyHow to do it...How it works...
17. Configuring SQL Server for Optimization
Introduction
Configuring SQL Server to use more processing power
Getting readyHow to do it...How it works...There's more...
Configuring memory in 32 bit versus. 64 bit
Getting readyHow to do it...How it works...
Configuring "Optimize for Ad hoc Workloads"
Getting readyHow to do it...How it works...
Optimizing SQL Server instance configuration
Getting readyHow to do it...How it works...There's more...
18. Policy-based Management
Introduction
Evaluating database properties
Getting readyHow to do it...How it works...There's more...
Restricting database objects
Getting readyHow to do it...How it works...There's more...
19. Resource Management with Resource Governor
Introduction
Configuring Resource Governor with SQL Server Management Studio
Getting readyHow to do it...How it works...There's more...
Configuring Resource Governor with T-SQL script
Getting readyHow to do it...How it works...There's more...
Monitoring Resource Governor
Getting readyHow to do it...How it works...There's more...
Index

Content preview from Microsoft SQL Server 2012 Performance Tuning Cookbook

Improving query performance by not using functions on predicate columns

Using a scalar function with column name in predicate would again make your condition non-sargable. It is really a heavy load on the query optimizer and consumes lot of resources. For as long as possible, try to use the alternate method and avoid using functions with column name in predicate, to achieve performance boosts from the indexes.

Getting ready

There is no automatic way to find this behavior; this is simply a manual process. You either keep this step in mind while developing the SQL script or while working on performance tuning projects.

How to do it...

There will be two different examples here, in this recipe. The first example will use the DATE function in predicate, ...

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SQL Server 2012 Query Performance Tuning, Third Edition

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