Databases Reference
In-Depth Information
A simple EM architecture diagram is shown in
Figure 5-2
.
Figure 5-2. Oracle Enterprise Manager architecture
Oracle Management Agent and OMS software updates are provided through Oracle
Management plug-ins on a more frequent basis than updates to EM itself. During a new
EM installation, by default Oracle Management plug-ins are installed for the Oracle
Database, Fusion Middleware, My Oracle Support, and Oracle Exadata. Plug-in updates
can be automatically downloaded to EM by setting up the Self Update console.
EM supports three different categories of administrators. SYSMAN is in the most pow‐
erful category, the Super Administrator, and is created when EM is installed. Super
Administrators have full access privileges to all targets and administrator accounts. They
also create other types of administrators and have unique management capabilities. For
example, Super Administrators can create OS-based notifications, set up notifications
based on SNMP traps, troubleshoot the Management Repository, set up Enterprise
Manager for self update, and fully manage the Software Library (where patches, virtual
appliance images, reference gold images, application software, and directive scripts are
stored).
More commonly, administrators are classified as “regular” administrators. The Super
Administrator usually divides up work by granting access to regular administrators to
certain targets and/or by giving them certain management task capabilities. A third type
of EM administrator is the Repository Owner who is the DBA for the Management
Repository.
A key underpinning to Enterprise Manager 12
c
used in managing Oracle hardware
servers and virtual machines is Enterprise Manager Ops Center 12
c
. Ops Center 12
c
manages Oracle servers that support the Integrated Lights Out Manager (ILOM), Ad‐
vanced Lights Out Manager (ALOM), and Embedded Lights Out Manager (ELOM).
These include Oracle's engineered systems, M-class servers, ZFS Storage Appliances,
and InfiniBand and Ethernet switches. Supported operating systems include Oracle
Solaris, Oracle Linux, Red Hat, SuSE, and Windows. Management capabilities extend
