Re: Odd Output From lsof (lots of open files)

From: Barry Margolin (barmar_at_alum.mit.edu)
Date: 10/30/04

  • Next message: Bruce D Porter: "Re: help with Jumpstart" 
    Date: Sat, 30 Oct 2004 07:48:37 -0400

    In article <6c795a35.0410300252.5d40747c@posting.google.com>,
     rhugga@yahoo.com (Keg) wrote:

    > Barry Margolin <barmar@alum.mit.edu> wrote in message
    > news:<barmar-9A697D.20183329102004@comcast.dca.giganews.com>...
    > > In article <6c795a35.0410290624.11381f33@posting.google.com>,
    > > rhugga@yahoo.com (Keg) wrote:
    > >
    > > > We are starting to get tcp timeouts connecting to an E4500 running
    > > > Solaris 9 64-bit and Oracle 9.2.0.4 64-bit. I examined lsof and
    > > > noticed about 2600 entries of this: (there were over 8000 open files
    > > > total)
    > > >
    > > > oracle 3164 oracle 277u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > > oracle 3164 oracle 278u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > > oracle 3164 oracle 279u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > > oracle 3164 oracle 280u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > > oracle 3164 oracle 281u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > > oracle 3164 oracle 282u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > > oracle 3164 oracle 283u
    > > > unknown file system type (vxfs), v_op: 0x783f7b90
    > > >
    > > > This system is running Veritas DBE 3.5 MP3 and a relatively recent Sun
    > > > recommended patch cluster (downloaded in Sept. I believe) I have
    > > > increased the max number of open files to 4096 in /etc/system when
    > > > this box was first installed so this problem is new. There have been
    > > > no changes to the system so not sure what is causing this. Has anyone
    > > > seen these before?
    > >
    > > Looks to me like Oracle might have a descriptor leak.
    >
    >
    > Turns out, according to Veritas, that this is because lsof was
    > compiled w/o veritas support. However, they still couldn't come up
    > with a reasonable answer as too why there were so many of these. Just
    > yet another reason why we are quickly moving to oracle 10g RAC so we
    > can move away from costly Veritas and the myriad of issues that always
    > accompany it.

    Their answer just explains the "unknown file system type" part of the
    output, which isn't the serious problem you're having. The reason for
    so many of them probably has nothing to do with Veritas -- like I said
    before, Oracle isn't closing its files. 

    -- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
  • Next message: Bruce D Porter: "Re: help with Jumpstart"

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