摘要：
Overview of Scalability and Performance Features
Oracle includes serveral software mechanisms to fulfill the following important requirements of an information management system:
- Data concurrency of a multiuser system must be maximized.
- Data must be read and modified in a consistent fashion. The data a user is viewing or changing is not changed(by other users) until the user is finished with the data.
- High performance is required for maximum productivity from the many users of 阅读全文
