1. 3 Copyright © 2005, Oracle. All rights reserved. Creating an Oracle Database

2. 3-2 Copyright © 2005, Oracle. All rights reserved. Objectives After completing this lesson, you should be able to do the following: Answer basic logical and physical database design questions Use the Database Configuration Assistant (DBCA) to create a database design template Use the DBCA to create an additional database (based on a template) Use the DBCA to delete a database

3. 3-3 Copyright © 2005, Oracle. All rights reserved. Tasks of a Database Administrator Task 1: Evaluating the database server hardware Task 2: Installing the Oracle database software Task 3: Planning the database Task 4: Creating and opening the database Task 5: Backing up the database Task 6: Enrolling system users Task 7: Implementing the database design Task 8: Backing up the fully functional database Task 9: Tuning database performance

4. 3-4 Copyright © 2005, Oracle. All rights reserved. Planning the Database As a DBA, you must plan: The logical storage structure of the database and its physical implementation: –How many disk drives do you have for this? –How many data files will you need? (Plan for growth) –How many tablespaces will you use? –Which type of information will be stored? Any special storage requirements due to type or size? The overall database design A backup strategy for the database

5. 3-5 Copyright © 2005, Oracle. All rights reserved. Planning the Database: Considerations The performance of the servers running Oracle database instances The performance of the database during data access operations The efficiency of backup and recovery procedures for the database

6. 3-6 Copyright © 2005, Oracle. All rights reserved. Databases: Examples Data Warehouse: Store data for long periods and retrieve them in read operations: Research and marketing data –State or federal tax payments –Professional licensing (doctors, nurses, and so on) Transaction Processing: Accommodate many, but usually small transactions: –Store checkout register system –Automatic teller machine (ATM) transactions General Purpose: Work with transactions and store them for a medium length of time: –Retail billing system, for example, of a software house or a nursery

7. 3-7 Copyright © 2005, Oracle. All rights reserved. Physical and Logical Design Questions: Quiz 1.DBAs should consider growth and security factors when planning a database. 2.It is a good idea to store data and indexes on the same physical disk although you have several disks available. 3.The size of a database can be described by the sum of all its tablespaces. 4.Database objects belonging to one schema can be stored in multiple tablespaces. 5.Blocks in online transaction processing (OLTP) systems should always be as full as possible, because updates never occur in this type of system. True/False

8. 3-8 Copyright © 2005, Oracle. All rights reserved. Database Configuration Assistant (DBCA)

9. 3-9 Copyright © 2005, Oracle. All rights reserved. Creating a Database Design Template

10. 3-10 Copyright © 2005, Oracle. All rights reserved. Creating a Database Design Template

11. 3-11 Copyright © 2005, Oracle. All rights reserved. Using the DBCA to Create a Database

12. 3-12 Copyright © 2005, Oracle. All rights reserved. Using the DBCA to Create a Database

13. 3-13 Copyright © 2005, Oracle. All rights reserved. Using the DBCA to Create a Database A B

14. 3-14 Copyright © 2005, Oracle. All rights reserved. Simplified Initialization Parameters DB_CACHE_SIZE DB_FILE_MULTIBLOCK _READ_COUNT SHARED_POOL_SIZE … Advanced CONTROL_FILES DB_BLOCK_SIZE PROCESSES UNDO_MANAGEMENT … Basic

15. 3-15 Copyright © 2005, Oracle. All rights reserved. Initialization Parameter Examples Full Notes Page

16. 3-16 Copyright © 2005, Oracle. All rights reserved. Using the DBCA to Delete a Database 3 1 2

17. 3-17 Copyright © 2005, Oracle. All rights reserved. Removing an Oracle Database Full Notes Page

18. 3-18 Copyright © 2005, Oracle. All rights reserved. Summary In this lesson, you should have learned how to: Answer basic logical and physical database design questions Use the DBCA to create a database design template Use the DBCA to create an additional database (based on a template) Use the DBCA to delete a database

19. 3-19 Copyright © 2005, Oracle. All rights reserved. Practice Overview: Using the DBCA This practice covers the following topics: Creating a database design template by using the DBCA Optionally: Creating an additional database Deleting a database

20. 3-20 Copyright © 2005, Oracle. All rights reserved.