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Chapter 1 Oracle Architecture Overview

Chapter 1 Oracle Architecture Overview. Objectives. Learn about Oracle9 i architecture and key Oracle9 i software components Look at the ORACLASS database Discover differences between Oracle9 i client and server installation options Learn how to use the Oracle Universal Installer

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Chapter 1 Oracle Architecture Overview

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  1. Chapter 1 Oracle Architecture Overview Oracle9i Database Administrator: Implementation and Administration

  2. Objectives • Learn about Oracle9i architecture and key Oracle9i software components • Look at the ORACLASS database • Discover differences between Oracle9i client and server installation options • Learn how to use the Oracle Universal Installer • Examine why to use OFA (Optimal Flexible Architecture) Oracle9i Database Administrator: Implementation and Administration

  3. Oracle9i Architecture: Key Components The core Oracle9i RDBMS software includes a suite of over 200 components. Key components are: • Oracle9i database & Oracle Net • Java/Web components • Oracle Enterprise Manager & Mgt. Packs • SQL*Plus • Utilities, Precompilers, and add-ons Oracle9i Database Administrator: Implementation and Administration

  4. Oracle9i Architecture: Running the Database The Oracle9i database server has 3 parts: • Database: data files, control files, and redo log files • Software: database executable files • Instance: background processes and memory Oracle9i Database Administrator: Implementation and Administration

  5. Oracle9i Architecture: A Typical Server Oracle9i Database Administrator: Implementation and Administration

  6. Oracle9i Architecture: Server Configurations Oracle9i Database Administrator: Implementation and Administration

  7. Oracle9i Architecture: Optional Additions Some important optional additions are: • Oracle Data Mining: queries on data warehouses • Oracle Advanced Security: industry standard security encryption and password validation • Enterprise Manager packs: additions for tuning, change management, and diagnostics Oracle9i Database Administrator: Implementation and Administration

  8. The ORACLASS Database Your workstation has: • Database instance named ORACLASS • Software: Oracle9i Enterprise Edition • Users: • SYSTEM: The default database administrator • SYS: The system manager with special capabilities • CLASSMATE: The future owner of tables you will create (this user is created at the end of Chapter 2) Oracle9i Database Administrator: Implementation and Administration

  9. Oracle9i Installation Options: N-tier Oracle9i Database Administrator: Implementation and Administration

  10. Oracle9i Installation Options: Server-side Choose from: • Enterprise Edition: best for many users and high-volume data • Standard Edition: best for small groups of users, smaller volume data • Personal Edition: best for individual use Oracle9i Database Administrator: Implementation and Administration

  11. Oracle9i Installation Options: Client-side Choose from: • Administrator: provides Enterprise Manager and other tools for remote database administration • Runtime: provides connectivity from local applications to a remote database Oracle9i Database Administrator: Implementation and Administration

  12. Oracle Universal Installer The user-friendly installation tool: • Installs any Oracle tool available to you • Capable of managing two releases of Oracle products on the same computer using Oracle Home • Able to run installations without human intervention with the Silent Install option Oracle9i Database Administrator: Implementation and Administration

  13. Optimal Flexible Architecture (OFA) Set of standards for directory structure and file names. Advantages include: • Spreading I/O across devices to reduce bottlenecks • Separating products into distinct directories and/or devices to improve performance • Providing standard names for file types to speed up administrative tasks Oracle9i Database Administrator: Implementation and Administration

  14. OFA: Directory Structure Standards ORACLE_BASE and ORACLE_HOME define the root directory structures Oracle9i Database Administrator: Implementation and Administration

  15. OFA: File Naming Standards Patterns for naming files are: • Control files: controlNN.ctl (example: control01.ctl) • Redo log files: redoNN.log (example: redo03.log) • Data files: XXXXNN.dbf (example: SYSTEM01.dbf) • NN = sequential numbers starting with 01. • XXXX = name of the tablespace Oracle9i Database Administrator: Implementation and Administration

  16. Chapter Summary • Oracle9i RDBMS software contains many basic components and even more optional add-ons • The database server contains the software, the database files, and the instance (made up of memory allocation and background processes) • Oracle Enterprise Edition is the most robust of the three installation options for the server • The ORACLASS database is installed on each student workstation Oracle9i Database Administrator: Implementation and Administration

  17. Chapter Summary • Multi-tier architecture provides greater flexibility and independence of software components • Oracle Universal Installer features an Oracle Home selector and Silent Install option • Optimal Flexible Architecture (OFA) defines standards for directory structure and file names Oracle9i Database Administrator: Implementation and Administration

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