May 1, 2012 • 5:45 pm 0
Oracle Enterprise Manager 12c introduces a new concept called “Metric Extensions”, that replaces the concept of User Defined Metrics.
User Defined Metrics are still supported in EM12c, but Oracle encourages you to migrate to Metric Extensions, as User Defined Metrics will not be supported in the next major release of Enterprise Manager.
Using Metric Extensions in EM12c
Filed under: Cloud Control 12c, Monitoring, Oracle Enterprise Manager 10 - 11g - 12c, White Papers
February 4, 2012 • 10:06 am 0
In previous releases of Enterprise Manager, we were able to create Groups that allowed us to monitor a group of Targets that were logically related. For instance specific groups based on the Lifecyle phase (Development, Test, Acceptance, Production), of based on the specific SLA the Targets were assigned to.
A great way to organise Targets and to focus on specific Groups in your monitoring setup. A drawback however, when looking at maintaining these groups. In too many situations at Customer sites, assigning newly created Targets to a specific Group simply was forgotten. This often resulted in incomplete monitoring of specific Targets.
Enterprise Manager 12c brings us a solution to this problem by introducing ‘Administration Groups’. When setting up an Administration Group, you need to identify specific Target Properties like ‘Department’, ‘Line of Business’, ‘Lifecycle Phase’ and others to relate to a certain level in the Administration Hierarchy. Where a Hierarchy might be based on multiple Properties.
If then for instance, a Target get’s assigned a specific ‘Line of Business’, the Target will be assigned automatically to the appropriate Group in the Hierarchy. By this you will be sure each Target is assigned to the right Group.
Administration Groups in EM12c
Filed under: Monitoring, Oracle Enterprise Manager 10 - 11g - 12c, White Papers, Cloud Control, em12c, enterprise manager cloud control, oem 12c
February 1, 2012 • 3:26 pm 1
Using Enterprise Manager 11 and earlier, you needed to install an Agent any time a new Server was introduced in your datacentre.
Then after you would have created a new Database or any other Target Type, you would need to perform a discovery using the Agent that was monitoring the specific server.
Starting with Enterprise Manager 12c your Targets can get discovered automatically even if no Agent has been installed yet.
Filed under: Cloud Control 12c, Configuration, Monitoring, Oracle Enterprise Manager 10 - 11g - 12c, White Papers, Cloud Control, em12c, enterprise manager cloud control, oem 12c
July 5, 2010 • 9:49 pm 0
I noticed some Forum Threats on the OTN OEM GC forum, regarding the creation of USer Defined Metrics and activating E-Mail notification on it.
Here is an example of how to get things working
User Defined Metrics and E-mail Notification
Filed under: Notification, Oracle Enterprise Manager 10 - 11g - 12c, User Defined Metrics, White Papers
February 4, 2010 • 11:13 pm 11
To add some more exercises for my training just worked out an example of creating an User Defined Metric and notify it’s alert using a custom Notification Method and custom Notification Rule.
I created a document describing all steps I went through.
Filed under: Metrics & Tresholds, Monitoring, Notification, Oracle Enterprise Manager 10 - 11g - 12c, User Defined Metrics, White Papers
January 12, 2010 • 3:21 pm 2
Today I have been working on the All Metrics page for Targets
I noticed that some of the Metrics have the value ‘Not Applicable’ or ‘No Set’ in the Threshold column.
While searching the My Oracle Support Website I hit note 436351.1 that describes this behaviour
Filed under: Metrics & Tresholds, Oracle Enterprise Manager 10 - 11g - 12c
August 17, 2008 • 11:35 pm 0
Create standard monitoring templates for each of your target types to be monitored. If for a specific target customization is needed, don’t be tempted to change target’s thresholds but use Customized templates instead.
Using this approach, you are alway able to reconstruct the monitoring setup for a specific target by applying the standard template and then applying it’s customized template.
Filed under: Metrics & Tresholds, Oracle Enterprise Manager
August 17, 2008 • 11:33 pm 0
When setting up target monitoring,start with designing you metrics and metric thresholds for each of your target types.
You might want to do this by simply creating a spreadsheet to identify for what target types you would like to test which metrics and to use what thresholds.
Filed under: Metrics & Tresholds, Oracle Enterprise Manager
October 17, 2007 • 9:39 pm 0
While applying new monitoring templates to a database instance target, we encountered the following:
When changing thresholds for ‘Tablespace Space Used’ metrics, both Warning and Critical threshold must be defined. Omitting one of these will result in no changes at the target. Applying the template to the target seems to function successfully (no errors shown), however no changes will be made to the target. This is because of the fact that database package DBMS_SERVER_ALERT doesn’t allow you to omit one of the thresholds (warning or critical) and will give an error message.
Filed under: Metrics & Tresholds, Oracle Enterprise Manager
July 11, 2007 • 10:40 pm 0
Monitoring targets using OEM heavily leans on Metrics and Policies. As you must have noticed, after installation of Oracle Enterprise Manager Hundreds of metrics and polices are installed. These metrics and policies will most probably start generating tons of alerts and at the end of the day you might end up with an EM console indicating many target alerts and policy violations.
Configuration of Metrics and Policies in Oracle Enterprise Manager
Filed under: Metrics & Tresholds, White Papers, Oracle Enterprise Manager
