Re: Direct I/O and Oracle

[Steve Lord <lord@sgi.com>]

On Fri, 2002-03-22 at 11:14, Austin Gonyou wrote:
> For the most part it should just work, unless you're talking about using
> raw devices, then you must setup raw devices, aside from that, though,
> it should just work.

Unless Oracle passes the O_DIRECT flag into the kernel is will not use
O_DIRECT. There has been a suggestion that a mount option be provided to
make the kernel assume O_DIRECT. It is not as simple as this since
O_DIRECT has alignment constraints and if the application made non
aligned requests they would be failed. So really Oracle is the only
one who can help here.

Steve


-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@sgi.com