Re: On 10gR2, Do you trust ADDM?

owensmith99_at_gmail.com wrote:
> Oracle People,
>
> Do you trust ADDM?
>
> I am a novice AWR user.
>
> I am looking at an AWR report. I am uncomfortable with the amount
> of information it is giving me; it's huge.
>
> In DBControl, when I run ADDM against a given AWR report,
> I'm comforted by the comprehensive nature of the ADDM report.
>
> Are you Oracle People comfortable with level of advice you obtain from
> ADDM reports?
>
> I'm certain that a piece of software designed to give advice can be
> more systematic
> than I at following a checklist.
>
> But I'm worried that details might be lurking in the enormous AWR
> report which
> ADDM is not designed to handle.
>
> Related question:
>
> Where might I find examples of Performance Tuning "Experts" analyzing
> an AWR report?
>
> -Owen
>

One of my issues with so-called "expert systems" like ADDM is that this is a tool you pay money for. And why would anyone pay for a tool that does not make any suggestions? If you paid good money for this product, then it should tell you how you can improve your performance by making appropriate suggestions. So many times, the tool makes suggestions because it has to!

Now I think that ADDM has come a long way from the earlier expert systems created to tune Oracle databases. However, one must take the suggestions with a grain of salt and try to determine if the suggestion and its recommended action is worthwhile to implement.

HTH,
Brian

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Brian Peasland
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http://www.peasland.net

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"I can give it to you cheap, quick, and good.
Now pick two out of the three" - Unknown

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