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

11g Diagnosability Framework


The Oracle 11g Database includes a full suite of diagnostic tools and advisors that are at least partially integrated with My Oracle Support (MOS), automatically uploading metrics via the Oracle Configuration Manager. This new diagnosability infrastructure includes the monitoring of the RDBMS, Automatic Storage Management (ASM) , Oracle Call Interface (OCI), SQL*Net, and Oracle Application Server 11.1 products.

This new version of Oracle introduces the Automatic Diagnostic Repository (ADR), which is a flat file structure containing all alert logs, core files, trace files, and incident information. The ADR_BASE = $ORACLE_BASE, which is controlled by the database diagnostic_dest parameter, replaces background_dump_dest , core_dump_dest , and user_dump_dest . The entire ADR repository can be moved to a different location than the initial install, at the same time resetting $ORACLE_BASE. Just removing or moving the directories will not disable the ADR. The TNS components...