RE: raw vs cooked filesystem for Oracle

anye filesystem that claims support for raw MUST do so with
direct IO. If performance is not the same as RAW, don't buy it.
 
 


________________________________

        From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Allen, Brandon
        Sent: Thursday, July 20, 2006 10:24 AM
        To: dc4oracle@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
        Subject: RE: raw vs cooked filesystem for Oracle
        
        
        According to the below white paper, they were able to get
near-raw performance on AIX with the Concurrent I/O option:
         
        http://www-03.ibm.com/servers/aix/whitepapers/db_perf_aix.pdf
         
        I've also had good/excellent performance with concurrent I/O,
but never compared it to raw so I can't really say how the two would
stack up.
         
         

________________________________

        From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of d cheng
        Sent: Thursday, July 20, 2006 10:11 AM
        
         
        I am writing a recommendation for one of my clients on using raw
versus cooked filesystems for Oracle data files.  Have you come across
any recent documents regarding this topic?
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