User`s guide

2
Architecture and Implementation 2-1
2 Architecture and Implementation
This chapter describes the Oracle Database system architecture for Fujitsu
BS2000/OSD. The chapter includes the following topics:
■ Operating System Environment
■ Basic Structures
■ Two-Task Mode
■ Address Space Planning
■ Oracle Database Environment Definition File
■ The ORALOAD Library
■ The ORAMESG library
■ User ID Requirements
2.1 Operating System Environment
Oracle Database 11g Release 2 runs on the BS2000/OSD operating system.
Oracle Database uses not only the interfaces of the native BS2000, but also the POSIX
interfaces. This section includes the following:
■ File Systems
■ POSIX Shell
■ Processes
2.1.1 File Systems
Oracle Database 11g Release 2 operates on two file systems, namely, BS2000 Data
Management System (DMS) and the POSIX file system.
The POSIX file system is hierarchically structured and consists of directories and files.
As in earlier releases, most of the database files for Oracle Database 11g reside in the
BS2000 DMS. For example, data files, control files, online and archive redo log files are
placed in the BS2000 DMS.
Automatic Diagnostic Repository (ADR), the new feature, requires a hierarchical file
system to create a file-based repository for database diagnostic data. So, the directories
and files of ADR reside in the POSIX file system.