SQL Tuning

Generating Optimal Execution Plans

Author: Dan Tow

Publisher: "O'Reilly Media, Inc."

ISBN: 9780596552367

Category: Computers

Page: 338

View: 845

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A poorly performing database application not only costs users time, but also has an impact on other applications running on the same computer or the same network. SQL Tuning provides an essential next step for SQL developers and database administrators who want to extend their SQL tuning expertise and get the most from their database applications.There are two basic issues to focus on when tuning SQL: how to find and interpret the execution plan of an SQL statement and how to change SQL to get a specific alternate execution plan. SQL Tuning provides answers to these questions and addresses a third issue that's even more important: how to find the optimal execution plan for the query to use.Author Dan Tow outlines a timesaving method he's developed for finding the optimum execution plan--rapidly and systematically--regardless of the complexity of the SQL or the database platform being used. You'll learn how to understand and control SQL execution plans and how to diagram SQL queries to deduce the best execution plan for a query. Key chapters in the book include exercises to reinforce the concepts you've learned. SQL Tuning concludes by addressing special concerns and unique solutions to "unsolvable problems."Whether you are a programmer who develops SQL-based applications or a database administrator or other who troubleshoots poorly tuned applications, SQL Tuning will arm you with a reliable and deterministic method for tuning your SQL queries to gain optimal performance.

Formal SQL Tuning for Oracle Databases

Practical Efficiency - Efficient Practice

Author: Leonid Nossov,Hanno Ernst,Victor Chupis

Publisher: Springer

ISBN: 3662504170

Category: Computers

Page: 109

View: 6069

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The target of SQL tuning is the improvement of the existing execution plan. The authors discuss the removal of brakes in the execution plan. Such "brakes" or bottlenecks can be recognized by a formal analysis of the execution plan. For this purpose no data model knowledge is needed. This is especially beneficial for database administrators because they are usually not or insufficiently familiar with the data model. The book presents numerous practical examples with this method.

Oracle 10g Database Administrator II

Backup/recovery & Network Administration

Author: Claire Rajan

Publisher: Cengage Learning

ISBN: 1418836648

Category: Computers

Page: 627

View: 1290

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Oracle 10g Database Administrator II: Backup/Recovery uses the most current database release from Oracle to provide thorough coverage of an Oracle database through the day-to-day duties of a database administrator. This text drills down key tools and techniques for Oracle database backup, recovery and network administration and provides good preparation for the update Oracle certification exam, Database Fundamentals I (#1Z0-043). In addition to extensive review material, the end of chapter content also includes comprehensive coverage of the exam objectives and exam-like practice questions. This text is the perfect compliment to the Oracle 10g: Database Administrator: Implementation and Administration (DBA1) text and the 1Z0-042.

High Performance MySQL

Author: Baron Schwartz,Peter Zaitsev,Vadim Tkachenko,Jeremy D. Zawodny,Arjen Lentz,Derek J. Balling

Publisher: O'Reilly Germany

ISBN: 3897218356

Category: Computers

Page: 768

View: 673

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Einführungen in MySQL gibt es viele. Wer aber größere MySQL-Server betreut, die verlässlich laufen müssen, egal was Programmierer oder Benutzer auf sie loslassen, der braucht weiter reichende Informationen. In High Performance MySQL beschreiben sechs anerkannte Experten mit langjähriger Erfahrung auf großen Systemen alle Stellschrauben, an denen MySQL-Admins drehen können, um Sicherheit, Performance, Datenintegrität und Robustheit zu erhöhen. Von Profis für Profis Hier geht es nicht um kleine Webauftritte mit Datenbankanbindung! Lernen Sie stattdessen fortgeschrittene Techniken kennen, mit denen Sie MySQLs Potenzial voll ausreizen können -- um große, skalierbare Systeme zu entwerfen, zu optimieren und zu sichern. Behandelt werden Benchmarking, Indizes, Storage-Engines, Replikationen, Lastverteilung und Hochverfügbarkeit, Backups, Sicherheit... und zu jedem Aspekt die richtigen Werkzeuge, mit denen sich Ihre Ziele am besten realisieren lassen. Praxiserprobt muss es sein Der eine ist MySQL-Guru bei Yahoo!, der andere Angestellter Nr. 25 bei MySQL AB und dort nacheinander für das MySQL-Manual, die Trainingskurse und die Entwicklung des Supports zuständig, wieder ein anderer war bei MySQL AB im High-Performance-Team – die Autoren dieses Buchs wissen, wovon sie sprechen. Graue Theorie finden Sie woanders, hier geht es um bewährte Techniken aus der Praxis. Die erste Auflage von „High Performance MySQL“ wurde hoch gelobt und hat schon unzähligen Lesern wertvolle Dienste geleistet. Nun war es an der Zeit, dieses anerkannte Handbuch einmal komplett zu aktualisieren, um nützliches Referenzmaterial zu erweitern, neue Features der Versionen MySQL 5.0 und 5.1 zu ergänzen und zahlreiche Themen wie die Optimierung der Storage-Engine InnoDB zu vertiefen.

Troubleshooting Oracle Performance

Author: Christian Antognini

Publisher: Apress

ISBN: 1430257598

Category: Computers

Page: 740

View: 1013

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Troubleshooting Oracle Performance, 2nd Edition is your systematic guide to diagnosing and resolving performance problems in database-backed applications involving Oracle's database engine. Christian Antognini brings a decade and a half experience to his topic. His first edition is one of the most well-respected books in its field. This second edition has been rigorously updated to cover the latest developments in Oracle Database 11g Release 2 through Oracle Database 12c. What do you do when your database application isn’t running fast enough? You troubleshoot, of course. Finding the slow part of an application is often the easy part of the battle. It’s finding a solution that’s difficult. Troubleshooting Oracle Performance, 2nd Edition helps by providing a systematic approach to addressing the underlying causes of poor database application performance. The author freely shares his experience while explaining the underlying foundations of how SQL statements are executed by the Oracle database engine. You'll be able to draw a solid foundation of theory and shared experience as you face head-on the performance challenges in your daily work. Written for developers by an application developer who has learned by doing Gives a systematic approach to solving database application performance problems Helps you plan for performance as you would for any other application requirement

Oracle Tuning

The Definitive Reference

Author: Donald K. Burleson

Publisher: Rampant TechPress

ISBN: 0979795192

Category: Computers

Page: 1200

View: 2938

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For Oracle tuning professionals wishing to add more tools to their Oracle tuning toolbox, this guidebook introduces the various tuning analytical tools and helpful strategies to make the database easier to use. Details describe how to extract information from the database and use it to determine and increase efficiency. It also provides specific steps with detailed information on how to congeal large amounts of database performance information into one pool from which the DBA can carefully choose tuning options based on what is predicted, all to give them the biggest improvement in performance for the least time and money investment. Sample code, sample code results, and guidelines on how to interpret the results help users manipulate code in an effective way. With countless hints, tips, and tools, the guide fully explains how to work with the Oracle system on order to achieve database performance excellence.

SQL Server 2008 Query Performance Tuning Distilled

Author: Sajal Dam,Grant Fritchey

Publisher: Apress

ISBN: 1430219025

Category: Computers

Page: 600

View: 3977

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SQL Server 2008 Query Performance Tuning Distilled presents a direct trouble–shooting methodology for identifying poorly-performing stored procedures and queries, isolating the causes of that poor performance, and fixing the underlying problems. Each chapter is dedicated to one of the top causes of poorly performing queries and shows methods for identifying and dealing with the problems in that chapter’s domain. Emphasis is always put upon or placed upon practical methods that you can put to immediate use in your day–to–day work. SQL Server 2008 functionality, tips, and tricks are emphasized in each subject area. Emphasizes the practical. Does not bury readers in theory. Gives readers practical techniques to immediately apply in their daily work. Dedicates a chapter to each of the most common, performance–related problem areas. What you’ll learn Identify and fix poorly performing queries that are hurting your business. Read query execution plans and identify bottlenecks in performance. Record system performance metrics for trend analysis. Learn to design databases and write Transact–SQL code to avoid common problems. Understand what an index is, what it does, and how to build one. Use industry accepted best practices and understand how to develop your own to arrive at optimal database performance. Who this book is for SQL Server Query Performance Tuning Distilled is aimed at anyone writing business–critical Transact–SQL queries, and also at those responsible for the continued good performance of those queries. Developers, database administrators, business intelligence analysts, and any others who develop Transact–SQL queries will find this book an indispensable resource for getting the most out of what SQL Server 2008 has to offer.

Oracle High-Performance SQL Tuning

Author: Donald K. Burleson

Publisher: McGraw-Hill Education

ISBN: 9780072190588

Category: Computers

Page: 656

View: 2541

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From the official Oracle Press comes a comprehensive guide to tuning SQL statements for optimal execution. This expert resource explains how to view the internal execution plan of any SQL statement and change it to improve the performance of the statement. You'll get details on Oracle's optimizer modes, SQL extensions, the STATSPACK utility, and a wealth of methods for tuning Oracle SQL statements.

SQL Server 2017 Query Performance Tuning

Troubleshoot and Optimize Query Performance

Author: Grant Fritchey

Publisher: Apress

ISBN: 1484238885

Category: Computers

Page: 932

View: 1266

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Identify and fix causes of poor performance. You will learn Query Store, adaptive execution plans, and automated tuning on the Microsoft Azure SQL Database platform. Anyone responsible for writing or creating T-SQL queries will find valuable the insight into bottlenecks, including how to recognize them and eliminate them. This book covers the latest in performance optimization features and techniques and is current with SQL Server 2017. If your queries are not running fast enough and you’re tired of phone calls from frustrated users, then this book is the answer to your performance problems. SQL Server 2017 Query Performance Tuning is about more than quick tips and fixes. You’ll learn to be proactive in establishing performance baselines using tools such as Performance Monitor and Extended Events. You’ll recognize bottlenecks and defuse them before the phone rings. You’ll learn some quick solutions too, but emphasis is on designing for performance and getting it right. The goal is to head off trouble before it occurs. What You'll Learn Use Query Store to understand and easily change query performance Recognize and eliminate bottlenecks leading to slow performance Deploy quick fixes when needed, following up with long-term solutions Implement best practices in T-SQL to minimize performance risk Design in the performance that you need through careful query and index design Utilize the latest performance optimization features in SQL Server 2017 Protect query performance during upgrades to the newer versions of SQL Server Who This Book Is For Developers and database administrators with responsibility for application performance in SQL Server environments. Anyone responsible for writing or creating T-SQL queries will find valuable the insight into bottlenecks, including how to recognize them and eliminate them.

Microsoft SQL Server 2014 Query Tuning & Optimization

Author: Benjamin Nevarez

Publisher: McGraw Hill Professional

ISBN: 0071829431

Category: Computers

Page: 416

View: 2653

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Optimize Microsoft SQL Server 2014 queries and applications Microsoft SQL Server 2014 Query Tuning & Optimization is filled with ready-to-use techniques for creating high-performance queries and applications. The book describes the inner workings of the query processor so you can write better queries and provide the query processor with the quality information it needs to produce efficient execution plans. You’ll also get tips for troubleshooting underperforming queries. In-Memory OLTP (Hekaton), a key new feature of SQL Server 2014, is fully covered in this practical guide. Understand how the query optimizer works Troubleshoot queries using extended events, SQL trace, dynamic management views (DMVs), the data collector, and other tools Work with query operators for data access, joins, aggregations, parallelism, and updates Speed up queries and dramatically improve application performance by creating the right indexes Understand statistics and how to detect and fix cardinality estimation errors Maximize OLTP query performance using In-Memory OLTP (Hekaton) features, including memory-optimized tables and natively compiled stored procedures Monitor and promote plan caching and reuse to improve application performance Improve the performance of data warehouse queries using columnstore indexes Handle query processor limitations with hints and other methods

Oracle SQL Tuning with Oracle SQLTXPLAIN

Oracle Database 12c Edition

Author: Stelios Charalambides

Publisher: Apress

ISBN: 1484224361

Category: Computers

Page: 408

View: 7315

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Learn through this practical guide to SQL tuning how Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN. This new edition has been expanded to include AWR, Oracle 12c Statistics, interpretation of SQL Monitor reports, Parallel execution, and Exadata-related features. Reading this book and using SQL helps you learn to tune even the most complex SQL, and you'll learn to do it quickly, without the huge learning curve usually associated with tuning as a whole. Firmly based in real-world problems, this book helps you reclaim system resources and avoid the most common bottleneck in overall performance, badly tuned SQL. You'll learn how the optimizer works, how to take advantage of its latest features, and when it's better to turn them off. Best of all, the book is updated to cover the very latest feature set in Oracle Database 12c. Covers AWR report integration Helps with SQL Monitor Report Interpretation Provides a reliable method that is repeatable Shows the very latest tuning features in Oracle Database 12c Enables the building of test cases without affecting production What You'll Learn Identify how and why complex SQL has gone wrong Correctly interpret AWR reports generated via SQLTXPLAIN Collect the best statistics for your environment Know when to invoke built-in tuning facilities Recognize when tuning is not the solution Spot the steps in a SQL statement's execution plan that are critical to performance of that statement Modify your SQL to solve performance problems and increase the speed and throughput of production database systems Who This Book Is For divAnyone who deals with SQL and SQL tuning. Both developers and DBAs will benefit from learning how to use the SQLTXPLAIN tool, and from the problem solving methodology in this book.

Oracle Database 10g SQL

Author: Jason Price

Publisher: McGraw Hill Professional

ISBN: 0071706704

Category: Computers

Page: 608

View: 2221

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This volume will take you from novice to master, covering not only how to use SQL but also the Oracle extensions to SQL. The examples feature the sample schemas available with Oracle Database 10g, and free code will be available for download.

Oracle Database 12c SQL

Author: Jason Price

Publisher: McGraw Hill Professional

ISBN: 0071799362

Category: Computers

Page: 688

View: 8999

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Write Powerful SQL Statements and PL/SQL Programs Learn how to access Oracle databases through SQL statements and construct PL/SQL programs. Oracle Database 12c SQL offers complete coverage of the latest database features and techniques. Find out how to write SQL statements to retrieve and modify database information, use SQL*Plus and SQL Developer, work with database objects, write PL/SQL programs, use performance optimization techniques, incorporate XML, and more. This Oracle Press guide contains everything you need to know to master SQL. Use SQL statements to access an Oracle database Work with SQL*Plus and SQL Developer Write PL/SQL programs Create tables, sequences, indexes, views, and triggers Design advanced queries containing complex calculations Create database objects to handle abstract data Use date, time stamp, and time interval data types Establish user roles and privileges Handle multimedia files using large objects Tune SQL statements to make them execute faster Generate, process, and store XML data Master the very latest Oracle Database 12c features Code examples in the book are available for download.

OCP Oracle Database 11g New Features for Administrators Exam Guide (Exam 1Z0-050)

Author: Sam Alapati

Publisher: McGraw Hill Professional

ISBN: 0071496823

Category: Computers

Page: 523

View: 4612

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A Fully Integrated Study System for OCP Exam 1Z0-050 Prepare for the Oracle Certified Professional Oracle Database 11g New Features for Administrators exam with help from this exclusive Oracle Press guide. In each chapter, you'll find challenging exercises, practice questions, a two-minute drill, and a chapter summary to highlight what you've learned. This authoritative guide will help you pass the test, and serve as your essential on-the-job reference. Get complete coverage of all OCP objectives for exam 1Z0-050, including: Installation and upgrades Partitioning and storage Intelligent infrastructure Diagnostics and fault management Performance Oracle Recovery Manager and Oracle Flashback Security Oracle SQL Performance Analyzer SQL plan management Automatic SQL tuning On the CD-ROM: One full practice exam that simulates the actual OCP exam Detailed answers and explanations Score report performance assessment tool Complete electronic book Bonus exam available free with online registration

Oracle Essentials

Oracle Database 12c

Author: Rick Greenwald,Robert Stackowiak,Jonathan Stern

Publisher: "O'Reilly Media, Inc."

ISBN: 1449343171

Category: Computers

Page: 432

View: 1681

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Written by Oracle insiders, this indispensable guide distills an enormous amount of information about the Oracle Database into one compact volume. Ideal for novice and experienced DBAs, developers, managers, and users, Oracle Essentials walks you through technologies and features in Oracle’s product line, including its architecture, data structures, networking, concurrency, and tuning. Complete with illustrations and helpful hints, this fifth edition provides a valuable one-stop overview of Oracle Database 12c, including an introduction to Oracle and cloud computing. Oracle Essentials provides the conceptual background you need to understand how Oracle truly works. Topics include: A complete overview of Oracle databases and data stores, and Fusion Middleware products and features Core concepts and structures in Oracle’s architecture, including pluggable databases Oracle objects and the various datatypes Oracle supports System and database management, including Oracle Enterprise Manager 12c Security options, basic auditing capabilities, and options for meeting compliance needs Performance characteristics of disk, memory, and CPU tuning Basic principles of multiuser concurrency Oracle’s online transaction processing (OLTP) Data warehouses, Big Data, and Oracle’s business intelligence tools Backup and recovery, and high availability and failover solutions

Professional Microsoft SQL Server 2014 Administration

Author: Adam Jorgensen,Bradley Ball,Steven Wort,Ross LoForte,Brian Knight

Publisher: John Wiley & Sons

ISBN: 1118859197

Category: Computers

Page: 936

View: 5185

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Learn to take advantage of the opportunities offered by SQLServer 2014 Microsoft's SQL Server 2014 update means big changes fordatabase administrators, and you need to get up to speed quicklybecause your methods, workflow, and favorite techniques will bedifferent from here on out. The update's enhanced support oflarge-scale enterprise databases and significant price advantagemean that SQL Server 2014 will become even more widely adoptedacross the industry. The update includes new backup and recoverytools, new AlwaysOn features, and enhanced cloud capabilities.In-memory OLTP, Buffer Pool Extensions for SSDs, and a newCardinality Estimator can improve functionality and smooth out theworkflow, but only if you understand their full capabilities.Professional Microsoft SQL Server 2014 is your comprehensiveguide to working with the new environment. Authors Adam Jorgensen,Bradley Ball, Ross LoForte, Steven Wort, and Brian Knight are thedream team of the SQL Server community, and they put theirexpertise to work guiding you through the changes. Improve oversight with better management and monitoring Protect your work with enhanced security features Upgrade performance tuning, scaling, replication, andclustering Learn new options for backup and recovery Professional Microsoft SQL Server 2014 includes acompanion website with sample code and efficient automationutilities, plus a host of tips, tricks, and workarounds that willmake your job as a DBA or database architect much easier. Stopgetting frustrated with administrative issues and start takingcontrol. Professional Microsoft SQL Server 2014 is yourroadmap to mastering the update and creating solutions thatwork.

T-SQL Querying

Author: Itzik Ben-Gan,Adam Machanic,Dejan Sarka,Kevin Farlee

Publisher: Microsoft Press

ISBN: 0133986624

Category: Computers

Page: 864

View: 7775

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T-SQL insiders help you tackle your toughest queries and query-tuning problems Squeeze maximum performance and efficiency from every T-SQL query you write or tune. Four leading experts take an in-depth look at T-SQL’s internal architecture and offer advanced practical techniques for optimizing response time and resource usage. Emphasizing a correct understanding of the language and its foundations, the authors present unique solutions they have spent years developing and refining. All code and techniques are fully updated to reflect new T-SQL enhancements in Microsoft SQL Server 2014 and SQL Server 2012. Write faster, more efficient T-SQL code: Move from procedural programming to the language of sets and logic Master an efficient top-down tuning methodology Assess algorithmic complexity to predict performance Compare data aggregation techniques, including new grouping sets Efficiently perform data-analysis calculations Make the most of T-SQL’s optimized bulk import tools Avoid date/time pitfalls that lead to buggy, poorly performing code Create optimized BI statistical queries without additional software Use programmable objects to accelerate queries Unlock major performance improvements with In-Memory OLTP Master useful and elegant approaches to manipulating graphs About This Book For experienced T-SQL practitioners Includes coverage updated from Inside Microsoft SQL Server 2008 T-SQL Querying and Inside Microsoft SQL Server 2008 T-SQL Programming Valuable to developers, DBAs, BI professionals, and data scientists Covers many MCSE 70-464 and MCSA/MCSE 70-461 exam topics

SQL

A Complete Reference

Author: Leon

Publisher: Tata McGraw-Hill Education

ISBN: 9780074637081

Category:

Page: 451

View: 2474

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It starts from scratch, prepares the reader for SQL by introducing concepts of data, database management, relational databases and data modeling. Highlights: It describes the newest and official version - Database Language SQL: 1992 - informally known as SQL/92 or SQL 2 ; Numerous solved examples and exercises. ; Quick reference of SQL commands, listed alphabetically with examples; Frequently asked interview questions (FAQs) are also included.

Expert MySQL

Author: Charles Bell

Publisher: Apress

ISBN: 9781430203469

Category: Computers

Page: 600

View: 3318

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MySQL remains one of the hottest open source database technologies. As the database has evolved into a product competitive with proprietary counterparts like Oracle and IBM DB2, MySQL has found favor with large scale corporate users who require high-powered features and performance. Expert MySQL is the first book to delve deep into the MySQL architecture, showing users how to make the most of the database through creation of custom storage handlers, optimization of MySQL's query execution, and use of the embedded server product. This book will interest users deploying MySQL in high-traffic environments and in situations requiring minimal resource allocation.