Re: CIO on AIX

From: Mary Elizabeth McNeely <>
Date: Sat, 12 Apr 2008 14:34:24 -0700 (PDT)
Message-ID: <>

A belated response ...

You can't use dbverify either, with the filesystemio_options=setall option on a jfs2 file system (which, as has been discussed, causes Oracle to use file-level CIO). Not sure if the same restriction exists for jfs/DIO.

  • Original Message ---- From: "Allen, Brandon" <> To: "" <>; Cc: Sent: Wednesday, February 21, 2007 12:05:36 PM Subject: RE: CIO on AIX

I've been running with filesystemio_options=setall and no cio mount option for 9 months with no problems. It sounds like the only problem Louis reported was with running user-managed hot backups, but we never do that and I can't really imagine why anybody would do it.

Louis, why don't you use rman?

-----Original Message-----
From: []

  • Brandon has 10g, no cio, param set to 'setall' and his lsoft showed that files are opened with c_io.
  • Louis has 10g, no cio, param set to 'setall' but he gets a crash. Mounting the fs with cio fixes it.
  • looks like safest way to go is have both enabled (cio and setall) on 9i and 10g.

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Received on Sat Apr 12 2008 - 16:34:24 CDT

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