IO Utilization Reach 100% — oracle-tech

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IO Utilization Reach 100%

jr-phDBA
jr-phDBA Member Posts: 237

Hi,

I usually see this warning in our Oracle Enterprise Manager Ops Center. Sadly, no one is familiar to acknowledge the said warning. Can I ask your guidance to look into it?

How can I determine if our solaris server is utilizing 100% IO?

Thank you

jr-phDBA

Answers

  • Klausm-Oracle
    Klausm-Oracle Member Posts: 28
    edited October 2016

    Hi,

    OPScenter is using iostat to get status of system and generate an incident when the threshold is reached.

    To verify which command output these is OPScenter is using enable the following filter on Asset

    and monitor cacao.0 for iostat output, or use dtrace script execsnoop to verify which commands

    used by Opscenter to

    # cacaoadm set-filter -i scn-agent com.sun.hss.domain.internal.sh=ALL

    # tail -f /var/cacao/instances/scn-agent/logs/cacao.0

    For disable set filter to "null"

    # cacaoadm set-filter -i scn-agent com.sun.hss.domain.internal.sh=null

    If more help is needed open an MOS SR.

    Regards
    KlausM

    jr-phDBAjr-phDBA
  • jr-phDBA
    jr-phDBA Member Posts: 237
    edited October 2016

    Hi Klausm,

    Thank you for the response. What will happen if the incident was not resolved or acknowledged from Ops Center level?

    I've checked iostat on the reported server, and it seems all fine.

    [email protected]:~# zpool list

    NAME       SIZE  ALLOC   FREE  CAP  DEDUP  HEALTH  ALTROOT

    dbbackup   348G   158G   190G  45%  1.00x  ONLINE  -

    ncho      2.13T   653G  1.50T  29%  1.00x  ONLINE  /

    rpool      556G   211G   345G  37%  1.00x  ONLINE  -

    [email protected]:~# zpool iostat

                   capacity     operations    bandwidth

    pool        alloc   free   read  write   read  write

    ----------  -----  -----  -----  -----  -----  -----

    dbbackup     158G   190G      0      0   212K   222K

    ncho         653G  1.50T    178    396  27.6M  4.19M

    rpool        211G   345G     15     44   581K   262K

    ----------  -----  -----  -----  -----  -----  -----

    Thanks!!

  • Klausm-Oracle
    Klausm-Oracle Member Posts: 28
    edited October 2016

    Hi,

    check the monitoring profile for iostat it takes such over an longer period and

    report Incident than.

    Threshold

    DiskUsageSet.name=*.busyPercentage

    Disk IO Utilization Percentage

    Generate alert after: 90 min

    If i'm correct, or is these an diff alert you get ?

    KlausM.

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