Exadata real time UKOUG 2013

Uploaded on

exadata_metrics.pl presentation during UKOUG TECH 13.

exadata_metrics.pl presentation during UKOUG TECH 13.

More in: Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads


Total Views
On Slideshare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide
  • ----- Notes de la réunion (11/30/13 16:51) -----need to generate load to get big numbers


  • 1. Bertrand Drouvot
  • 2.        Oracle DBA since 1999 OCP 9i,10g,11g Rac certified Expert Exadata certified implementation specialist Blogger since 2012 @bertranddrouvot BasketBall fan
  • 3.   exadata_metrics.pl: a tool to extract real time metrics based on cumulative ones. You can download it from my blog: bdrouvot.wordpress.com or google it.
  • 4.     cellcli -e "list metriccurrent attributes metricType" | sort | uniq Cumulative: Cumulative statistics since the metric was created. Instantaneous: Value at the time that the metric is collected. Rate: Rates computed by averaging statistics over observation periods.
  • 5.       cellcli -e "list metriccurrent attributes name where metrictype='Cumulative'" | wc –l And especially on cellcli -e "list metriccurrent attributes name where name like 'DB_IO_.*' and metrictype='Cumulative' and metricobjectname=‘BDT'" DB_IO_RQ_LG (RQ = requests) DB_IO_RQ_SM DB_IO_WT_LG (WT=Wait Time) DB_IO_WT_SM
  • 6.   Understand the output of the script. Show the options/features of the script.
  • 7. alter iormplan objective=auto; ./exadata_metrics_v1.pl cell=exacell1 name='DB_IO_.*' objectname=‘BDT'
  • 8.     How to interpret delta=0 ? list METRICCURRENT DB_IO_RQ_SM detail The same with the rate: list METRICCURRENT DB_IO_RQ_SM_SEC detail So that's not clear with this version (unless interval time is > collection time)
  • 9.  ./exadata_metrics_v2.pl cell=exacell1 name='DB_IO_.*' objectname=‘BDT'  Great the DELTA(s) does the job so:   DELTA(s) > 0: Means you can check the metric value as the snaps are from 2 distinct collectionTime. DELTA(s) = 0: Means the snaps come from the same collectionTime and then a metric value of 0 is obvious.
  • 10. ./exadata_metrics_v2.pl cell=exacell1 name='DB_IO.*' objectname=‘BDT' And then compare with cellcli -e "list metriccurrent attributes name,metrictype,metricobjectname,metricvalue, collectionTime where name like 'DB_IO_.*' and metricobjectname=‘BDT' and metrictype='Rate'"
  • 11.      Let’s see the help Can display snap or avg since script has been launched or both Can aggregate Can filter or exclude Can work with a group of cell
  • 12.   Real-time metrics from cumulative ones. I am doing it also for ASM metrics (Download asm_metrics.pl from my blog or google it)