Book Image

Oracle Database 11g : Underground Advice for Database Administrators

By : April Sims
Book Image

Oracle Database 11g : Underground Advice for Database Administrators

By: April Sims

Overview of this book

Today DBAs are expected to deploy and manage large databases with quality service and little to no downtime. The DBA's main focus is on increasing productivity and eliminating idle redundancy throughout the enterprise. However, there is no magic set of best practices or hard and fast rules that DBAs need to follow, and this can make life difficult. But if DBAs follow some basic approaches and best practices, tasks can be performed more efficiently and effectively.This survival guide offers previously unwritten underground advice for DBAs. The author provides extensive information to illuminate where you fit in, and runs through many of the tasks that you need to be watchful of, extensively covering solutions to the most common problems encountered by newcomers to the world of Oracle databases.The book will quickly introduce you to your job responsibilities, as well as the skills, and abilities needed to be successful as a DBA. It will show you how to overcome common problems and proactively prevent disasters by implementing distributed grid computing—scalable and robust—with the ability to redeploy or rearchitect when business needs change. Reduce downtime across your enterprise by standardizing hardware, software, tools, utilities, commands, and architectural components.This book will also help you in situations where you need to install Oracle Database 11g or migrate to new hardware making it compliant with a Maximum Availability Architecture. By the end of this book you will have learned a lot and gained confidence in your abilities. You will be armed with knowledge as to which tools are best used to accomplish tasks while proactively moving towards an automated environment.
Table of Contents (14 chapters)
Oracle Database 11g—Underground Advice for Database Administrators
Credits
About the author
About the reviewers
Preface
Index

Summary


You should have figured out by now that RMAN is a highly advanced tool in your arsenal of weapons against things that may attack the database. It even helps protect the database against the DBA, the most powerful being that it is sworn to protect but is also the greatest threat.

One of the most important things you should take away from this chapter is to maintain a constant vigilant eye on the database alert log. Errors may occur within SQL*Plus or other clients that actually mask a much larger issue such as corruption.

In order to provide the best possible service to your customers while keeping outages to a minimum, RMAN is one of the best tools for database backups and recovery. Remember the following list because these are important to backup and recovery as part of the MAA in addition to using RMAN:

  • Running in archivelog mode—gives the ability to recover more transactions.

  • Multiple copies of the controlfile—redundancy on different mount points.

  • Multiple copies of online redo logs...