Oracle Database Architecture - EN
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This document provides an overview of the architecture of Oracle Database. It discusses the different editions of Oracle Database, the files that make up an Oracle database including datafiles, redo logs and control files. It also describes the logical and physical structures of an Oracle database, including tablespaces, memory structures and background processes. Furthermore, it outlines how Oracle Net works to handle client connections and discusses transactions, undo data, read consistency and backup/recovery in an Oracle database.
Oracle Database Architecture - EN
- 2. Independent consultant +11 years in IT +10 years with Oracle Database Architect Data Modeling and Tuning SQL Tuning Database Troubleshooting Consulting Michal Šimoník © 2015 About me Oracle Database Architecture
- 3. Michal Šimoník © 2015 Introduction Oracle Database Architecture ● Oracle Database editions ○ Personal edition ○ Express edition ○ Standard edition One ○ Standard edition ○ Enterprise edition ● Instalation ○ ORACLE_BASE ○ ORACLE_HOME
- 4. Michal Šimoník © 2015 Database Oracle Database Architecture ● Datafiles ● Control file ● Redo log files ● Initialization parameter file ○ PFILE / SPFILE ● Password file ● Flash(Fast) Recovery Area ○ Archived log files ○ Backup files ○ Flashback logs ● Automatic Diagnostic Repository ○ Alert and tracelog files
- 5. Michal Šimoník © 2015 Logical database structure Oracle Database Architecture
- 6. Michal Šimoník © 2015 Physical database structure Oracle Database Architecture ● Important tablespaces ○ SYSTEM ○ SYSAUX ○ UNDO ○ TEMPORARY
- 7. Michal Šimoník © 2015 Memory structure Oracle Database Architecture
- 8. Michal Šimoník © 2015 Background processes Oracle Database Architecture
- 9. Michal Šimoník © 2015 Oracle Net Oracle Database Architecture ● The listener receives a request for client process connection ● The listener starts dedicated server process. Server process inherits connection from the listener. ● The client is now connected directly to the dedicated server.
- 10. Michal Šimoník © 2015 Oracle Net Oracle Database Architecture ● The listener receives a request for client process connection ● The listener starts dedicated server process ● The listener provides the location of the dedicated server process to the client ● The client process connects directly to the dedicated server process
- 11. Michal Šimoník © 2015 Starting up a database Oracle Database Architecture
- 12. Michal Šimoník © 2015 Shutting down a database Oracle Database Architecture
- 13. Michal Šimoník © 2015 Transactions and Undo data Oracle Database Architecture
- 14. Michal Šimoník © 2015 Transactions and read consistency Oracle Database Architecture
- 15. Michal Šimoník © 2015 (NO)ARCHIVELOG - Backup and Recovery Oracle Database Architecture
- 16. Michal Šimoník © 2015 Thank you for your attention Oracle Database Architecture Q&A