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Oracle SQL tuning : pocket reference

Mark Gurry

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۴۹٬۰۰۰ تومان

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تحویل فوری
پرداخت امن
ضمانت فایل
پشتیبانی

مشخصات کتاب

نویسنده
Mark Gurry
سال انتشار
۲۰۰۲
فرمت
PDF
زبان
انگلیسی
تعداد صفحات
۲۲ صفحه
حجم فایل
۱٫۰ مگابایت

دربارهٔ کتاب

I didn't notice that this pocket reference was still in its first printing, from January of 2002. As such most of the content is now obsolete. Specifically the author devotes a lot of space to comparing the Rule-Based and Cost-Based Optimizers, and points out the clear superiority of the latter. This was big news when Oracle 9i was about to be released, not so much now. As to the rest, there are 22 pages (out of merely 102) enumerating the many hints one can apply to SQL. There's not much here that isn't already available from Oracle documentation directly. 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. In this book, Mark Gurry shares his in-depth knowledge of Oracle's SQL statement optimizers offering SQL tuning tips and solutions to many common problems of both rule-based and cost-based optimisers.

قیمت نهایی

۴۹٬۰۰۰ تومان