Re: Direct SGA access problem because of structs' changing start addresses (e.g., x$ksmsp)

> As far as I remember I never found out how to find a starting address without query a instance

Yes, I was wondering about that, too (it would be great to not have any sqlplus step first) - but if you say you've already researched that, I guess it's not feasible...
>
> If you are interested in I can try to find these sources somewhere but I'm wondering why you are looking into that topic now when ASH is build in into Oracle or you can run S-ASH or other similar tools from SQL.

Well I guess, it's just "for fun" (and looking for a way to do some programming, privately, connected somehow to the job ;-)) And if it doesn't cause too much trouble, of course it would be interesting to see your code :-)

Thanks!
Sigrid

>
> regards,
> Marcin
>
>
>
> On Tue, Jan 7, 2014 at 10:33 PM, keydana_at_gmx.de <keydana_at_gmx.de> wrote:
> Hi,
>
> I'm trying to write some Haskell code for direct SGA access of - preferredly, as of today - x$ksmsp (sql queries against this table being expensive, possibly...), and for that I'm following the approach from Kyle Hailey, as detailed in the Oracle Wait Interface book.
>
> So I need the struct's start address, but unfortunately, when I query x$ksmsp several times in a row - even from the same sqlplus process - I get different results every time... (Actually, this seems to be the case with most fixed tables, apart from those "fixed" fixed ones as x$ksuse...)
>
> It'd be great if anyone had advice, or an idea, what I could do to get this working all the same (and as to what the reason might be?)
> It ought to be possible somehow to do this, as I've tried oradebug direct access with x$ksmsp and it worked (of course, it runs in sqlplus, so I don't know...)
>
> Thanks a lot in advance!
>
> Sigrid--
> http://www.freelists.org/webpage/oracle-l
>
>
>
>
>
> --
> Marcin Przepiorowski
> http://oracleprof.blogspot.com

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