Database Reference
In-Depth Information
Plug-ins
Plug-ins
take on a whole new meaning in EM12c. In earlier releases, plug-ins were largely system-monitoring utilities
used to monitor and manage non-Oracle (heterogeneous) software, including databases and middleware. Partners
or Oracle Corporation itself usually built them. Some technically savvy customers built their own as well, but there
weren't many plug-ins overall.
In the EM12c release, a few of these monitoring plug-ins remain, but plug-ins have been greatly expanded
to include every target type being managed. As such, there is now an Oracle database plug-in to manage Oracle
databases, a Fusion Middleware plug-in to manage Oracle's middleware, a Fusion Application plug-in to manage
Oracle's applications, and so on. Because new releases of the Oracle software will include plug-ins used to manage
that software, this means EM12c (and later releases) will be able to monitor and manage those releases much more
quickly than has been the case in the past. Plug-ins can be downloaded, applied, and deployed using the new Self
Update functionality available from the Cloud Control console (if you have sufficient privileges to use it).
In addition, this modular plug-in architecture means that an agent is no longer configured to be able to monitor
any target type. Now, an agent will download only the plug-ins that are needed for the targets that the agent is
monitoring. This means the agents themselves are smaller than they were in previous releases. This change is one of
the biggest improvements in the architecture of the EM12c release.
So that's the basic architecture you need to understand. Now let's look at how EM12c can be used to manage an
ODA environment. The first thing you need to do for this, of course, is install an agent.
Agent Installation
Agent installation on an ODA machine is not all that different to agent installation on any other machine. First you
need to add the hosts, and then discover the targets that are available on the hosts. In this example, I will walk you
through the installation of agent software on a two-node ODA from Enterprise Manager Cloud Control 12c.
Adding the Hosts
To add the hosts, start Enterprise Manager Cloud Control 12c and select Setup
➤
Add Targets
➤
Add Targets
Manually. Do this as shown in Figure
12-3
.
Figure 12-3.
Choosing to manually add a target
