The Enterprise Manager product is a self-service product. There are a ton
of features and products that Oracle works very hard to keep as "light" as
possible. The important monitoring features may differ drastically from
one customer to another. What may be a top ten for you, even if it were to
be disabled, may be far down on the list for another customer, so we've
ensured that you have the functionality available to ensure you can monitor
almost anything imaginable.
Hope this helps,
Kellyn Pot'Vin-Gorman
Consulting Member of Technical Staff, SCP
Oracle
[image: Kellyn Pot'Vin on about.me]
Kellyn Pot'Vin-Gorman
about.me/dbakevlar
<http://about.me/dbakevlar>
On Wed, Feb 24, 2016 at 12:02 PM, <fmhabash@xxxxxxxxx> wrote:
Since it is not default, how are you handling scenarios where your
database latch/mutex contention goes 2000% at 150 ms proactively?
Even though possible to do through home-grown scripts, but if adaptive
monitors are suited the most for anything, it is for wait event monitoring.
Having to engineer such adaptive feature is not something clients are
willing to pay for.
Do you rely on v$system_event/v$session_event?
----------------------------------------
Thanks
*From: *Courtney Llamas <courtney.llamas@xxxxxxxxxx>
*Sent: *Wednesday, February 24, 2016 1:36 PM
*To: *fmhabash@xxxxxxxxx; Kellyn Pot'Vin-Gorman <dbakevlar@xxxxxxxxx>
*Cc: *Oracle-L Group <oracle-l@xxxxxxxxxxxxx>
*Subject: *RE: How to Monitor Wait Event Average Elapsed Time Using
EMCC12c
You can see the available metrics in the DB Reference guide -
http://docs.oracle.com/cd/E24628_01/em.121/e25160/oracle_database.htm#EMDBM3179.
These correspond to the DB wait event classes
http://docs.oracle.com/cd/E11882_01/server.112/e40402/waitevents001.htm#BGGHJGII
Setting thresholds on each specific wait would be very time consuming and
error prone when new versions/waits are introduced.
--
- Courtney
[image: Oracle] <http://www.oracle.com/>
Courtney Llamas | Consulting Member of Technical Staff
Phone: +2814108258 | Mobile: +8324720596
Oracle Strategic Customer Program
Oracle
[image: Green Oracle] <http://www.oracle.com/commitment>
Oracle is committed to developing practices and products that help protect
the environment
*From:* fmhabash@xxxxxxxxx [mailto:fmhabash@xxxxxxxxx]
*Sent:* Wednesday, February 24, 2016 12:27 PM
*To:* Kellyn Pot'Vin-Gorman
*Cc:* Oracle-L Group
*Subject:* RE: How to Monitor Wait Event Average Elapsed Time Using
EMCC12c
I’m a bit surprised why did Oracle not include such metrics in the default
template, even if disabled.
----------------------------------------
Thanks
*From: *Kellyn Pot'Vin-Gorman <dbakevlar@xxxxxxxxx>
*Sent: *Wednesday, February 24, 2016 1:24 PM
*To: *fmhabash@xxxxxxxxx
*Cc: *Oracle-L Group <oracle-l@xxxxxxxxxxxxx>
*Subject: *Re: How to Monitor Wait Event Average Elapsed Time Using
EMCC12c
By the data you've provided, elapsed time per a specific wait event isn't
a default metric, but yes, you could easily create this with a metric
extension. Once you add it to a target, then use that target as the base
for a template and then you can use it elsewhere.
Hope this helps,
Kellyn
[image: Kellyn Pot'Vin on about.me]
*Kellyn Pot'Vin-Gorman*
about.me/dbakevlar
On Wed, Feb 24, 2016 at 11:02 AM, <fmhabash@xxxxxxxxx> wrote:
I had a need to create EM monitors/alerts when a particular wait event
average elapsed time exceeds a threshold. Looking at the default template,
I see wait classes (by waiter count) and no wait event metrics.
Are wait event metrics not available in anywhere in a template?
Do I have to create a metric extension for this purpose?
----------------------------------------
Thanks
