Book Image

OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide

Book Image

OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide

Overview of this book

Oracle Database Server is the most widely used relational database in the world today. This book gives you the essential skills to master the fundamentals of Oracle database administration and prepares you for Oracle DBA certification."OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide" prepares you to master the fundamentals of Oracle database administration using an example driven method that is easy to understand. The real world examples will prepare you to face the daily challenges of being a database administrator.Starting with the essentials of why databases are important in today's information technology world and how they work, you are then guided through a full, customized installation of the Oracle software and creating your own personal database. We then examine fundamental concepts of Oracle, including architecture, storage structures, security, performance tuning, networking, and instance management. Finally, we take an in-depth look at some of the most important concepts in the daily life of an Oracle DBA - backup, recovery, and data migration."OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide" provides you with the skills you need in order to become a successful Oracle DBA, both for certification and real life tasks.
Table of Contents (24 chapters)
OCA Oracle Database 11g: Database Administration I: A Real-World Certification Guide
Credits
Foreword
About the Author
About the Reviewer
www.packtpub.com
Preface
Index

Test your knowledge


Q. 1. Which type of optimization is most commonly used today in the Oracle database?

a. Rule-based optimization

b. Cost-based optimization

c. Execution-based optimization

d. Run-based optimization

Q. 2. Which procedure of the DBMS_STATS package can be used to gather statistics for all the tables in one given schema?

a. GATHER_TABLE_STATS

b. ANALYZE_TABLE_STATS

c. GATHER_SCHEMA_STATS

d. ANALYZE_DATABASE_STATS

Q. 3. The auto optimizer stats collection job is enabled for our Companylink database. However, we notice that statistics are not being collected for all of the tables in our database. What could be the cause of the missed statistics?

a. The objects being missed are not within a single schema.

b. The objects being missed are in separate tablespaces.

c. The job is not completing within the Autotask scheduled window.

d. The Autotask feature has not been enabled using DBMS_STATS.

Q. 4. If the collection of new statistics causes a degradation of performance from the previous statistics...