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

From: kyle Hailey <kylelf_at_gmail.com>
Date: Mon, 27 Jun 2011 14:57:34 -0700
Message-ID: <BANLkTimSu2vg8ne0oWKV-7uZ-X1DsQNQ2Q_at_mail.gmail.com>



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

\http://www.pythian.com/news/22727/how-to-confirm-direct-io-is-getting-used-on-solaris/

Another good reference

http://yong321.freeshell.org/oranotes/DirectIO.txt<http://www.facebook.com/l.php?u=http%3A%2F%2Fyong321.freeshell.org%2Foranotes%2FDirectIO.txt&h=b8ece>

2011/6/27 rajesh koppada <xrajx_at_hotmail.com>

> 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
>

--
http://www.freelists.org/webpage/oracle-l
Received on Mon Jun 27 2011 - 16:57:34 CDT

Original text of this message