Re: some one has experiece using direc io in nt, not using raw disks

Juan Carlos Reyes Pacheco wrote:
> Hi List,
> Some one has experiece using direc io in nt, not using raw disks, I read
> this don't gives as much performance as in other platforms.

Oracle9i Database Getting Started, Release 2 (9.2) for Windows Part Number A95490-01

2 Oracle9i Windows/UNIX Differences

Direct Writes to Disk

On both UNIX and Windows platforms, bypassing the file system buffer cache ensures data is written to disk.

On UNIX, Oracle uses the O_SYNC flag to bypass the file system buffer cache. The flag name depends on the UNIX port.

On Windows, Oracle bypasses the file system buffer cache completely.

-- 
Vladimir Begun
The statements and opinions expressed here are my own and
do not necessarily represent those of Oracle Corporation.

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