Re: Oracle on windows and shadow thread file access

You'd hit "nfile" limits on HPUX [or at least HPUX 10.xx] pretty quickly. Hemant
At 06:43 AM 29-11-02 -0800, you wrote:

>None...only the oracle background processes (threads in Winblows)
>access the datafiles/logfiles etc. All other communication is
>done through the SGA. On some Unix variants you _can_ reach
>a file_open max kernel parameter because each process (in a
>dedicated server scenario) opens it's own stdin/stdout/stderr.
>I guess the same could be true of processes running under
>windows too. So in the limit...you could hit a wall but only
>due to the per-process overhead.
>
>Cheers
>
>Jeff Herrick
>
>On Fri, 29 Nov 2002, Grant Allen wrote:
>
> > Saw an interesting post in comp.databases.oracle.server postulating that if
> > a shadow thread needed an open file handle on all files in a instance (or
> > even some of them), the process handle limit in windows could constrain
> user
> > scalability (e.g. too many users would result in ora-12500 unable to spawn
> > errors and the like). (Let's ignore MTS/shared server mode for the
> moment)
> >
> > Sounded interesting, but I thought I'd ask if anyone knows whether a shadow
> > thread (or process under unix) does open a handle on each file (control,
> > data, redo), some of them, or none of them?
> >
> > Ciao
> > Fuzzy
> > :-)
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: Grant Allen
> > INET: grant_at_towersoft.co.uk
> >
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>--
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>--
>Author: Jeff Herrick
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>
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Hemant K Chitale
My web site page is : http://hkchital.tripod.com

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Hemant K Chitale
  INET: hkchital_at_singnet.com.sg

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