Re: Async and Direct I/O On Solaris using VXFS

From: kyle Hailey <>
Date: Mon, 27 Jun 2011 14:57:34 -0700
Message-ID: <>

What platform are you on? For direct I/O on solaris check out


Another good reference<>

2011/6/27 rajesh koppada <>

> Hello,
> How can i confirm that oracle will be doing Direct I/O and Asynchronous i/o
> with following options.
> Database FILESYSTEMIO_OPTIONS is set to ALL which means to use,
> setall - Enables both ASYNC and DIRECT IO
> we are using VERITAS volume manager 5.0 with VXFS filesystems(We don't have
> QIO or ODM) and file system mount options are set as follows
> mincache=direct and conovsync=direct
> Will Oracle is going to use both direct i/o and asynchronous i/o with these
> file system options.
> How can we ensure i am getting direct i/o and Async i/o ?
> can we enable some trace or something just to ensure we are getting both?
> Thanks
> Raj

Received on Mon Jun 27 2011 - 16:57:34 CDT

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