Oracle Essentials, Fourth Edition Oracle Database 11g by Rick Greenwald, Robert Stackowiak, Jonathan Stern

By Rick Greenwald, Robert Stackowiak, Jonathan Stern

Книга Oracle necessities, Fourth version Oracle Database 11g Oracle necessities, Fourth version Oracle Database 11g Книги Oracle Автор: Rick Greenwald, Robert Stackowiak, Jonathan Stern Год издания: 2007 Формат: pdf Издат.:O Reilly Страниц: 408 Размер: three ISBN: 0-596-51454-9 Язык: Русский0 (голосов: zero) Оценка:-

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Data Movement Features | 19 Database Performance Features Oracle includes several features specifically designed to boost performance in certain situations. We’ve divided the discussion in the following subsections into two categories: database parallelization and data warehousing. Database Parallelization Database tasks implemented in parallel speed up querying, tuning, and maintenance of the database. By breaking up a single task into smaller tasks and assigning each subtask to an independent process, you can dramatically improve the performance of certain types of database operations.

As is typical for embedded databases, TimesTen requires almost no ongoing administration. Replication is possible from one TimesTen database to another through an option and is, by default, asynchronous. Oracle Berkeley DB Oracle Berkeley DB is an extremely small-footprint embedded database engine providing record-level locking. It comes in Java and XML versions. It is designed to be deployed with and run in the same process as your applications. When Berkeley DB is deployed in this manner, no separate database administration is required.

Transportable Tablespaces Transportable tablespaces first appeared in Oracle8i. Instead of using the export/ import process, which dumps data and the structures that contain it into an intermediate file for loading, you can place a tablespace in read-only mode, move or copy it from one database to another, and then mount it. The same data dictionary (metadata) describing the tablespace must exist on the source and the target. This feature can save a lot of time since it simplifies the movement of large amounts of data.

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