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
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)
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)
Hinweis der Redaktion
----- Notes de la réunion (11/30/13 16:51) -----need to generate load to get big numbers