re Direct IO -- was RE: Important note about asynchronous commit

Oracle should always be opening the files with O_DSYNC.

See http://www.opensolaris.org/jive/thread.jspa?messageID=7037 There's a good point there about the Archiver -- ArchiveLog files should not be on Direct I/O filesystems.

Hemant

At 10:51 PM Tuesday, Jesse, Rich wrote:
>This thread leads me to a question. Does the Unix syncer come into play
>when direct IO is used? I believe it does with most FS caching, which
>means that even synchronous writes can't really be guaranteed, doesn't
>it? At least that's what I was lead to believe...
>
>Rich
>-----Original Message-----
>From: oracle-l-bounce_at_freelists.org
>[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Hemant K Chitale
>Sent: Tuesday, September 26, 2006 9:28 AM
>To: juancarlosreyesp_at_gmail.com; Oracle-L Freelists
>Subject: Re: Important note about asynchronous commit
>
><snip>
>http://www.freelists.org/webpage/oracle-l

Hemant K Chitale
http://web.singnet.com.sg/~hkchital

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