Mark Gurry – författare

The books in O''Reilly''s Oracle series are authoritative -- they tell the whole story about complex topics, ranging from performance tuning to the use of packages in PL/SQL to new technologies like Power Objects. And they''re independent; they''re alternatives for readers who need to know how products and features really work. They''re packed with real-world advice and techniques from practitioners in the field, and they come with disks containing code you can use immediately in your own applications. O''Reilly is the alternative for Oracle people who need to solve problems -- and solve them now.Performance tuning is crucial in any modern relational database management system. Too many organizations respond to Oracle performance problems by throwing money at these problems -- by buying larger and more expensive computers or by hiring expert consultants. But there''s a lot you can do on your own to increase dramatically the performance of your existing system. Whatever version of Oracle you''re running -- from Version 6 to Oracle8, proper tuning can save your organization a huge amount of money in additional equipment, extra memory, and hardware upgrades.The first edition of Oracle Performance Tuning became a classic for programmers, managers, database administrators, system administrators, and anyone who cares about improving the performance of an Oracle system. This second edition contains 400 pages of updated material updating on Oracle features, incorporating advice about disk striping and mirroring, RAID, client-server, distributed databases, MPPS, SMPs, and other architectures. It also includes chapters on parallel server, parallel query, backup and recovery, the Oracle Performance Pack, and more.

One of the most important challenges faced by Oracle database administrators and Oracle developers is the need to tune SQL statements so that they execute efficiently. Poorly tuned SQL statements are one of the leading causes of substandard database performance and poor response time. SQL statements that perform poorly result in frustration for users, and can even prevent a company from serving its customers in a timely manner.

In this book, Mark Gurry shares his in-depth knowledge of Oracle''s SQL statement optimizers. Mark''s knowledge is the result of many hard-fought tuning battles during his many years of providing Oracle tuning services to clients. Mark provides insights into the workings of the rule-based optimizer that go well beyond what the rules tell you. Mark also provides solutions to many common problems that occur with both the rule-based and cost-based optimizers.

In addition to the specific problem/solution scenarios for the optimizers, Mark provides a number of handy SQL tuning tips. He discusses the various optimizer hints, telling you when they can be used to good effect. Finally, Mark discusses the use of the DBMS_STATS package to manage database statistics, and the use of outlines to specify execution plans for SQL statements in third-party applications that you can''t otherwise modify.

One of the most important challenges faced by Oracle database administrators and Oracle developers is the need to tune SQL statements so that they execute efficiently. Poorly tuned SQL statements are one of the leading causes of substandard database performance and poor response time. SQL statements that perform poorly result in frustration for users, and can even prevent a company from serving its customers in a timely manner.

In this book, Mark Gurry shares his in-depth knowledge of Oracle''s SQL statement optimizers. Mark''s knowledge is the result of many hard-fought tuning battles during his many years of providing Oracle tuning services to clients. Mark provides insights into the workings of the rule-based optimizer that go well beyond what the rules tell you. Mark also provides solutions to many common problems that occur with both the rule-based and cost-based optimizers.

In addition to the specific problem/solution scenarios for the optimizers, Mark provides a number of handy SQL tuning tips. He discusses the various optimizer hints, telling you when they can be used to good effect. Finally, Mark discusses the use of the DBMS_STATS package to manage database statistics, and the use of outlines to specify execution plans for SQL statements in third-party applications that you can''t otherwise modify.