Re: ioug-a question

I don't think anyone who reads the original YAPP paper will miss this. If I recall correctly, one of it's opening statements is the classic formula:

    response time = service time plus wait time.

My own mantra puts in rather less scientific terms:

    If you have a performance problem, either your database     is working too hard, or it's not being allowed to work.

Jonathan Lewis
http://www.jlcomp.demon.co.uk

Author of:
Practical Oracle 8i: Building Efficient Databases

Next Seminar - Australia - July/August
http://www.jlcomp.demon.co.uk/seminar.html

Host to The Co-Operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html

-----Original Message-----
|
|Aside: In the migration to wait-based tuning, don't forget that even
waits
|alone don't cover everything. Service time is the other significant
|component.
|

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