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Title: Creating a Self-Tuning Oracle Database: Automating Oracle9i Dynamic SGA Performance (Oracle In-Focus series) by Donald K. Burleson ISBN: 0-9727513-2-7 Publisher: Rampant Tech Press Pub. Date: 01 August, 2003 Format: Paperback Volumes: 1 List Price(USD): $16.95

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Average Customer Rating: 5 (4 reviews)

Rating: 5
Summary: Most useful for me
Comment: This was very enjoyable read and I'm very happy to see that many of the details about using the Oracle9i dynamic SGA are revealed. The problem has always been that the Oracle documentation tells you about the new features yet fail to tell you about how to apply them.

After reading this book I was able to understand the automatic-tuning methods in Oracle10g and they made sense because the author revealed some of the mechanisms that they use. The online scripts are very nice also, with many I had never seen before.

Rating: 5
Summary: MYSTERIES REVEALED!
Comment: This book is another insightful guide from the master of Oracle database tuning, Donald Burleson. Readers will no doubt recall that Mr. Burleson wrote the Oracle best sellers, "Oracle High-Performance SQL Tuning" and Oracle High-Performance Tuning with Statspack." Mr. Burleson brings the same level of expertise to this new series of books published by "Rampant Techpress."

This volume unravels the mysteries of the various database caches and pools in the 9i database. Are you confused about the different pools and database caches that have been introduced in recent years? Do you know what the difference is between the "Keep Pool" and the "Recycle Pool" ? Okay, how about this: How many buffer caches are there-7 or 8 ? Where should you put your indexes-in the cache with the largest block size, or the smallest?

I confess that I have found it difficult to keep up with the myriad cache and pool changes that Oracle has introduced in recent years. I suspect that other DBAs also find it challenging. These issues are all addressed in this book, with extensive examples and scripts, so that readers can try it for themselves. There are a total of 29 useful scripts that are provided with this book (I successfully downloaded them from the Rampant web site).

I found the section, "Internals of the Oracle Data Buffers" particular interesting. It explains the difference between the pre-Oracle 9i buffering system and the new "touch count" method used in 9i. In this section, the script "Buf_Blocks.sql" is really amazing. It lists in tabular format the exact distribution of objects in the data buffers, sorted by buffer pool. Using this script, you can see which pool your indexes or tables have been assigned.

Beware! This book isn't filled with "fluff" or some theoretical treatises dreamed up by academians. This is a book BY AND FOR PRACTICING DBAS. The focus in the book is on PROACTIVELY improving database performance. If you are a "Hands on" DBA interested in getting the best performance from your system, then you will find this book very helpful.

Rating: 5
Summary: Excellent coverage on SGA internals
Comment: I was very impressed by the Plain English renditions in this book. It is high structured and wekk organized with scripts to illustrate each concept. It is very useful for multiple blocks in Oracle9i and concise and informative.

The only fault is that it assumes a working DBA knowledge, but the scripts help make-up for the deficiency.

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