Stuck with bugs, performance problems, crashes, data corruption, and puzzling output? If you're a database programmer or DBA, they're part of your life. The trick is knowing how to quickly recover from them. This unique, example-packed book shows you how to handle an array of vexing problems when working with MySQL.
Written by a principal technical support engineer at Oracle, MySQL Troubleshooting provides the background, tools, and expert steps for solving problems from simple to complex-whether data you thought you inserted doesn't turn up in a query, or the entire database is corrupt because of a server failure. With this book in hand, you'll work with more confidence.
* Understand the source of a problem, even when the solution is simple
* Handle problems that occur when applications run in multiple threads
* Debug and fix problems caused by configuration options
* Discover how operating system tuning can affect your server
* Use troubleshooting techniques specific to replication issues
* Get a reference to additional troubleshooting techniques and tools, including third-party solutions
* Learn best practices for safe and effective troubleshooting-and for preventing problems
Sprache
Verlagsort
Produkt-Hinweis
Broschur/Paperback
Klebebindung
Maße
Höhe: 238 mm
Breite: 182 mm
Dicke: 20 mm
Gewicht
ISBN-13
978-1-4493-1200-8 (9781449312008)
Schweitzer Klassifikation
Sveta Smirnova is a Principle Technical Support Engineer in the Bugs Verification Group of the MySQL Support Group at Ora.
Foreword;
Preface;
Audience;
How to Solve a Problem;
How This Book Is Organized;
Some Choices Made in This Book;
Conventions Used in This Book;
Using Code Examples;
Safari® Books Online;
How to Contact Us;
Acknowledgments;
Chapter 1: Basics;
1.1 Incorrect Syntax;
1.2 Wrong Results from a SELECT;
1.3 When the Problem May Have Been a Previous Update;
1.4 Getting Information About a Query;
1.5 Tracing Back Errors in Data;
1.6 Slow Queries;
1.7 When the Server Does Not Answer;
1.8 Issues with Solutions Specific to Storage Engines;
1.9 Permission Issues;
Chapter 2: You Are Not Alone: Concurrency Issues;
2.1 Locks and Transactions;
2.2 Locks;
2.3 Transactions;
2.4 Metadata Locking;
2.5 How Concurrency Affects Performance;
2.6 Other Locking Issues;
2.7 Replication and Concurrency;
2.8 Effectively Using MySQL Troubleshooting Tools;
Chapter 3: Effects of Server Options;
3.1 Service Options;
3.2 Variables That Are Supposed to Change the Server Behavior;
3.3 Options That Limit Hardware Resources;
3.4 Using the --no-defaults Option;
3.5 Performance Options;
3.6 Haste Makes Waste;
3.7 The SET Statement;
3.8 How to Check Whether Changes Had an Effect;
3.9 Descriptions of Variables;
Chapter 4: MySQL's Environment;
4.1 Physical Hardware Limits;
4.2 Operating System Limits;
4.3 Effects of Other Software;
Chapter 5: Troubleshooting Replication;
5.1 Displaying Slave Status;
5.2 Problems with the I/O Thread;
5.3 Problems with the SQL Thread;
Chapter 6: Troubleshooting Techniques and Tools;
6.1 The Query;
6.2 Effects of the Environment;
6.3 Sandboxes;
6.4 Errors and Logs;
6.5 Information-Gathering Tools;
6.6 Localizing the Problem (Minimizing the Test Case);
6.7 General Steps to Take in Troubleshooting;
6.8 Testing Methods;
6.9 Special Testing Tools;
6.10 Maintenance Tools;
Chapter 7: Best Practices;
7.1 Backups;
7.2 Gathering the Information You Need;
7.3 Testing;
7.4 Prevention;
7.5 Think About It!;
Information Resources;
Resources Containing Information That Is Usually Useful;
Bug and Knowledge Databases;
Expert Knowledge Online;
Places Where You Can Ask for Help;
Books;
Colophon;
