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

Methods to move the data


Data Pump uses different methods to move the data in and out of a database; it can use the following methods:

  • Datafile copy

  • Direct path

  • External tables

  • Conventional path

  • Network link

Now let's take a closer look at each one of these methods.

Datafile copy

This is the quickest way to transport an entire tablespace to a target system; all you will need to do is transfer the tablespace's underlying files to the target environment. With this method, Data Pump export is used to unload only structural information (metadata) into the dump file.

Tip

When using this option, firstly always check if the database character set is the same in the source and target databases and they must also be at same time zone version.

For a tablespace to be transported to a target system, it must be self-contained. Use the TRANSPORT_SET_CHECK procedure in the DBMS_TTS package to determine whether you are moving a self-contained tablespace (or tablespaces). You must have been granted the EXECUTE_CATALOG_ROLE...