RE: Oracle Tunning

[SARKAR, Samir]

Well Mogens, Niemiec's book does have its plus points as well. What we basically want from Oracle

is improved response times and faster performance........which is all about how many hits we r getting

and improving the hit ratio is something any DBA will try to attain.

There is a wonderful technique in his book about how to estimate the size of the db_block_buffers

by mythically raising it by a certain amount and checking the hit ratio or decreasing it and checking

the impact. This way, we can arrive at an optimum value for the db_block_buffers.

How to interpret the UTLESTAT/UTLBSTAT statistics r very clearly and lucidly explained as r the various

join methods, improper use of indexes including index suppression, using the x$bh table to monitor buffer use,

a very clear explanation of the Explain Plan, new tips for Oracle 8/8i, how to use PL/SQL for better performance etc.

The best part is the book has lots of very useful queries and screen reprints to help us understand the

scenario better.

 

Am not saying that it is the best tuning book in the market but the techniques of tuning r very clearly explained

in it.

Tuning by wait events is still very arcane and not explained clearly exactly how to do it in many books though

I haven't read the 101 book. I still find it difficult to properly interpret all the various wait events and latch contention

and how to go about tuning them And until Steve Adams comes out with his advanced performance tuning book,

we will all have to wait.

 

Samir

Samir Sarkar
Oracle DBA - Lennon Team
SchlumbergerSema
Email :  [EMAIL PROTECTED]
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-----Original Message-----
From: Mogens N�rgaard [mailto:[EMAIL PROTECTED]]
Sent: 31 January 2002 18:39
To: Multiple recipients of list ORACLE-L
Subject: Re: Oracle Tunning

Commit; :-)

In my opinion, you shouldn't spend your money on buying the Niemich book. It's full of errors (increase the buffer cache hit ratio, for instance) and the wrong approach (no time-based measurement method, just checklist after checklist).

Buy 101 by Gaja. Then buy Tom Kyte's One-On-One book for general fantastic advise on anything. Then go to oraperf.com (Anjo), hotsos.com (Millsap), ixora.com.au (Steve Adams) and Jonathan Lewis' website (can never remember the adresse). Or go to MiracleAS.dk and find all these links, including the book links.

Mogens
Miracle A/S
Denmark

Farnsworth, Dave wrote:

Binay,

I totally agree with this recommendation from Jared for a tuning book.
Read the first three chapters, stop and re-read them.  And if you play
your cards right you can even get a question answered by an author on
this list.  Cool, eh.

Dave

-----Original Message-----
Sent: Tuesday, January 29, 2002 3:05 PM
To: Multiple recipients of list ORACLE-L



Start with 'Oracle Performance Tuning 101',  available at an
amazon.com near you.

Jared

On Tuesday 29 January 2002 09:10, [EMAIL PROTECTED] wrote:

Hi Everyone

	Can anyone suggest me some very good book on Oracle Tunning.

Please only

mention those books  which you think is really worth purchasing


Binay Kumar
Oracle Cerified DBA

London



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