RE: EM12c + instance monitoring template + deadlock detection

  • From: "Stephens, Chris" <Chris.Stephens@xxxxxxx>
  • To: Niall Litchfield <niall.litchfield@xxxxxxxxx>
  • Date: Thu, 27 Feb 2014 08:47:01 -0600

I see a "Cluster Database" target type but not "rac_database" when creating a 
template.  The "Cluster Database" target type doesn't appear to have any 
metrics related to deadlocks that I can see.

From: Niall Litchfield [mailto:niall.litchfield@xxxxxxxxx]
Sent: Thursday, February 27, 2014 3:30 AM
To: Stephens, Chris
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: EM12c + instance monitoring template + deadlock detection

Chris

I don't immediately have access to a system to look, but is a GES Deadlock 
applicable to a "database instance" target type. I'd sort of expect that to be 
a rac_database issue.

On Wed, Feb 26, 2014 at 3:14 PM, Stephens, Chris 
<Chris.Stephens@xxxxxxx<mailto:Chris.Stephens@xxxxxxx>> wrote:
12.1.0.3 EM12c monitoring 11.2.0.4 RAC on Oracle Linux 6.

I've got a monitoring template for Target Type = Database Instance.  In it I 
have the "Incident" metric class upload interval set to Every 5 minutes. Under 
incident I have "Deadlock" Comparison operator set to "Matches" ,"Warning 
Threshold" empty, "Critical Threshold" set to ".*".

I've applied the template to all of our instances but when I create a deadlock 
situation, an alert isn't raised.  Messages like the following shows up in the 
alert log:

Global Enqueue Services Deadlock detected. More info in file
/u01/app/oracle/diag/rdbms/oract1db/oract1db2/trace/oract1db2_lmd0_21286.trc.

I see alerts for other events that I have set up to monitor through this 
template like "Blocking Session DB Time" etc.

Anybody have any suggestions on what could be the problem?

I've very new to EM12c btw so it could very easily be something very obvious.

Thanks for any help!
Chris


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Niall Litchfield
Oracle DBA
http://www.orawin.info

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