Less03 Db Dbca Mb

8/14/2019 Less03 Db Dbca Mb

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3-2 Copyright 2005, Oracle. All rights reserved.

Objectives

After completing this lesson, you should be able to dothe 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


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Tasks of a Database Administrator

Task 1: Evaluating the database server hardwareTask 2: Installing the Oracle database softwareTask 3: Planning the database

Task 4: Creating and opening the databaseTask 5: Backing up the databaseTask 6: Enrolling system usersTask 7: Implementing the database design

Task 8: Backing up the fully functional databaseTask 9: Tuning database performance


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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


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Planning the Database:Considerations

The performance of the servers running Oracledatabase instances

The performance of the database during data

access operations The efficiency of backup and recovery proceduresfor the database


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Databases: Examples

Data Warehouse: Store data for long periods andretrieve them in read operations:

Research and marketing data

State or federal tax payments Professional licensing (doctors, nurses, and so on)

Transaction Processing: Accommodate many, butusually 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


7/203-7 Copyright 2005, Oracle. All rights reserved.

Physical and Logical DesignQuestions: Quiz

1. DBAs should consider growth and securityfactors when planning a database.

2. It is a good idea to store data and indexes onthe same physical disk although you haveseveral disks available.

3. The size of a database can be described by thesum of all its tablespaces.

4. Database objects belonging to one schema canbe 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

True/False

True/False

True/False

True/False



Database Configuration Assistant (DBCA)



Creating a Database Design Template



Using the DBCA to Create a Database




A

B



Simplified Initialization Parameters

DB_CACHE_SIZEDB_FILE_MULTIBLOCK _READ_COUNTSHARED_POOL_SIZE

Advanced

CONTROL_FILESDB_BLOCK_SIZEPROCESSESUNDO_MANAGEMENT

Basic



Initialization Parameter ExamplesFull Notes Page



Using the DBCA to Delete a Database

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Removing an Oracle DatabaseFull Notes Page



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 designtemplate Use the DBCA to create an additional database

(based on a template) Use the DBCA to delete a database



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


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Less03 Db Dbca Mb