OCP-1Z0-052-V8.02-109题

109. In a new installation of Oracle Database 11g, you perform these activities:

1: Organize software and data on different subdirectories to avoid poor performance.

2: Use consistent naming conventions for database files. 

3: Separate administrative information pertaining to the database in different directories.

Which option corresponds to the type of activities you performed?

A.Oracle Managed Files

B.Oracle Grid Architecture

C.Optimal Flexible Architecture

D.Oracle database architecture

E.Automatic Storage Management 

Answer: C  

答案解析：

1：组织软件和数据在不同的子目录，以避免性能较差。

2：使用一致的常规命名数据库文件。

3：不同的目录，其各自的管理权限信息都分离开来。

最优灵活体系结构（Optimal Flexible Architecture，简称OFA）

OFA其实就是一种Oracle的一种规范，其意义就是用一种统一的给文件和文件夹的规则，和文件存放目录的规则做一个约定。这样，我们不管是安装多个版本的Oracle Database也好，因为目录规范，命名规范，这样软件不会冲突，方便管理，文件也方便查找。通过遵循OFA的指导，使得整个系统可以更加灵活

Advantages of Multiple Oracle Homes and OFA

When you install Oracle database, you are installing a large application that your computer can support. Using multiple Oracle homes and Optimal Flexible Architecture provides many advantages when administering large databases. The following advantages are important:

• Structured organization of directories and files, and consistent naming for database files simplify database administration.

• Distribution of I/O across multiple disks prevents performance bottlenecks caused by multiple read or write commands issued simultaneously to a single drive.

• Distribution of applications across multiple disks safeguards against database failures.

• Login home directories are not at risk when database administrators add, move, or delete Oracle home directories.

• Multiple databases, of different versions, owned by different users can coexist concurrently.

• Software upgrades can be tested in an Oracle home in a separate directory from the Oracle home where your production database is located.