Book Image

Oracle Database 12c Backup and Recovery Survival Guide

Book Image

Oracle Database 12c Backup and Recovery Survival Guide

Overview of this book

The three main responsibilities of a successful DBA are to ensure the availability, recoverability, and performance of any database. To ensure the recoverability of any database, a DBA needs to have a strong backup and recovery skills set. Every DBA is always looking for a reference book that will help them to solve any possible backup and recovery situation that they can come across in their professional life. Oracle Database 12c Backup and Recovery Survival Guide has the unique advantage to be a reference to all Oracle backup and recovery options available, making it essential for any DBA in the world. If you are new to Oracle Database, this book will introduce you to the fantastic world of backup and recovery that is vital to your success. If you are an experienced DBA, this book will become a reference guide and will also help you to learn some possible new skills, or give you some new ideas you were never aware about. It will also help you to easily find the solution to some of the most well known problems you could find during your career as a DBA. This book contains useful screenshots, scripts, and examples that you will find more than useful. Most of the books currently available in the market concentrate only on the RMAN utility to backup and recovery. This book will be an exception to the rule and will become a must-have reference, allowing you to design a real and complete backup and recovery strategy. It covers the most important topics on Oracle database such as backup strategies, Nologging operations, new features in 12c, user managed backups and recoveries, RMAN (including reporting, catalog management, troubleshooting, and performance tuning), advanced data pump, Oracle Enterprise Manager 12c and SQL Developer. "Oracle Database 12c Backup and Recovery Survival Guide" contains everything a DBA needs to know to keep data safe and recoverable, using real-life scenarios.
Table of Contents (22 chapters)
Oracle Database 12c Backup and Recovery Survival Guide
Credits
About the Author
Acknowledgement
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Cloning a user


In the past when a DBA had the need to create a new user with the same structure (all objects, tablespaces quota, synonyms, grants, system privileges, and so on) using the old exp/imp, it was a very painful experience. This is because not all the metadata was included, and it was a very slow process when moving a big volume of data. Now this can be done very easily using Data Pump. Let's use an example where you want to create the user TEST2 exactly like the user TEST. In order to achieve this goal, all you will need to do is first export the schema TEST definition, and then import it again asking the Data Pump to change the schema TEST for the new schema named TEST2 using the REMAP_SCHEMA parameter available with impdp:

$ expdp fcomunoz/alvarez@pdborcl schemas=test content=metadata_only directory=datapump dumpfile= test_06192013.dmp

Note

If you want to clone a schema including the data, all you need to do is repeat the preceding example, removing the parameter CONTENT of it...