Re: EMC's DBTuner

Well EMC DBTuner only reads from the SGA. There is no need to write to the SGA for that product. It doesn't need latching for it and won't get in the way of other process. The trick is in the way you attach to the SGA. Taht can be done in Readonly mode or Readwrite mode. DBTuner attaches in readonly mode. So if it tried to write in to the SGA, it would get an segmentation violation. So it is safe.

Anjo.

dgoulet_at_vicr.com wrote:

> Now I know from previous posts that a number of folks are using EMC symmetric
> arrays, so I should get a couple of replies. Are any of you using
> their/Precise's DBTuner product as well? We had a demo today, but I'm still
> very leery of third party products that attach to Oracle's SGA. My point being
> that Oracle goes to quite a bit of effort through the latch mechanism to keep
> their processes out of each other's way. If your third party program, although
> only trying to read data, gets in the way all hell can & will break loose. Also
> if you can read something, you sure as heck can write there as well, even if not
> by intent.
>
> Any experiences welcome.
>
> Dick Goulet
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Author: Anjo Kolk
  INET: anjo_at_oraperf.com

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