Re: solaris ufs and filesystemio_options with setall

On Jul 12, 3:25 pm, staind <ulh..._at_yahoo.com> wrote:
> I have a quick question about direct i/o and the filesystemio_options

Quick question... LOL!

> parameter, in particular on ufs and Solaris. My understanding is that
> if we set this to setall (or directio), Oracle will, at its
> discretion, use direct i/o for file access. However, in the couple of
> machines I've looked at where I have this parameter set, Oracle is not
> doing any direct i/o whatsoever (I will explain in a minute how
> exactly I verify this). I am wondering if anyone has been able to get
> 10g to do direct i/o on a Solaris box using ufs, with
> filesystemio_options (as opposed to using the forcedirectio mount
> option)? I am trying to determine if there is something in my
> configuration prohibiting this, or if in fact Oracle is explicitly
> choosing not to use direct i/o for some reason, or if it's a bug.

Maybe these guys can help: http://kevinclosson.wordpress.com/2007/02/23/standard-file-utilities-with-direct-io/ http://www.solarisinternals.com/wiki/index.php/Direct_I/O

jg

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