ufs: forcedirectio
vxfs: convosync=direct,mincache=direct
hth
connor
- "Hillman, Alex" <Alex.Hillman_at_usmint.treas.gov>
wrote: > How do you specify direct I/O option in
/etc/vfstab?
>
> Alex Hillman
>
> -----Original Message-----
> Sent: Wednesday, June 20, 2001 4:25 AM
> To: Multiple recipients of list ORACLE-L
> VxFS
>
>
>
> Direct I/O is enabled simply be specifying in the
> mount options in /etc/vfstab (on Solaris). You can
> do
> it even with standard ufs volumes. As long as you
> have vxfs then you can also have vxfs with direct IO
>
> Quick I/O is the separately licensed bit I think -
> it
> should also outperform Direct I/O.
>
> Still - I'm a fan of raw over either...
>
> Cheers
> Connor
>
> --- KC <kchan_at_speednet.com.au> wrote: > Connor,
> >
> > Thanks for the info. Is Direct I/O licensed with
> the
> > Veritas Volume manager
> > or the Database edition?? We want to be able to
> > avoid double buffering,
> > sound like Direct I/O is what we want, however our
> > SysAdmin insisted that we
> > need to purchase the Database edition, I thought
> > Direct I/O came with the
> > VxFS file system, maybe the SysAdmin confused
> Direct
> > I/O to raw ,please
> > clarify??
> >
> > KC
> >
> >
> > -----Original Message-----
> > To: Multiple recipients of list ORACLE-L
> > <ORACLE-L_at_fatcity.com>
> > Date: Wednesday, June 20, 2001 2:53 AM
> >
> >
> > >
> > >Direct IO is the capacity to perform operations
> > >without the data being passed through the Unix
> > buffer
> > >cache (it goes straight to/from the disks to the
> > >Oracle buffer cache)
> > >
> > >Quick IO is Veritas's simulation of raw datafiles
> -
> > it
> > >presents the file to Oracle as if it were raw.
> > >
> > >hth
> > >connor
> > >
> > >--- KC <kchan_at_speednet.com.au> wrote: > Dear
> List,
> > >>
> > >> What the difference between qio and direct I/O
> > >> option in Veritas file system VxFS??
> > >>
> > >> KC
> > >>
> > >
> > >
> > >=====
> > >Connor McDonald
> > >http://www.oracledba.co.uk (mirrored at
> > >http://www.oradba.freeserve.co.uk)
> > >
> > >"Some days you're the pigeon, some days you're
> the
> > statue"
> > >
> >
>
>____________________________________________________________
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> > >--
> > >Author: =?iso-8859-1?q?Connor=20McDonald?=
> > > INET: hamcdc_at_yahoo.co.uk
> > >
> > >Fat City Network Services -- (858) 538-5051
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> >
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> =====
> Connor McDonald
> http://www.oracledba.co.uk (mirrored at
> http://www.oradba.freeserve.co.uk)
>
> "Some days you're the pigeon, some days you're the
> statue"
>
>
> Do You Yahoo!?
> Get your free @yahoo.co.uk address at
> http://mail.yahoo.co.uk
> or your free @yahoo.ie address at
> http://mail.yahoo.ie
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: =?iso-8859-1?q?Connor=20McDonald?=
> INET: hamcdc_at_yahoo.co.uk
>
> Fat City Network Services -- (858) 538-5051 FAX:
> (858) 538-5051
> San Diego, California -- Public Internet
> access / Mailing Lists
>
> To REMOVE yourself from this mailing list, send an
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> also send the HELP command for other information
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> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Hillman, Alex
> INET: Alex.Hillman_at_usmint.treas.gov
>
> Fat City Network Services -- (858) 538-5051 FAX:
> (858) 538-5051
> San Diego, California -- Public Internet
> access / Mailing Lists
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=== message truncated ===
Connor McDonald
http://www.oracledba.co.uk (mirrored at
http://www.oradba.freeserve.co.uk)
"Some days you're the pigeon, some days you're the statue"
Do You Yahoo!?
Get your free @yahoo.co.uk address at
http://mail.yahoo.co.uk
or your free @yahoo.ie address at
http://mail.yahoo.ie
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: =?iso-8859-1?q?Connor=20McDonald?=
INET: hamcdc_at_yahoo.co.uk
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
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Received on Wed Jun 20 2001 - 11:05:14 CDT
