RE: raw vs cooked filesystem for Oracle

Thank you Kevin and Allen!!
   
  - David

Kevin Closson <kevinc@xxxxxxxxxxxxx> wrote:
      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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