OEM
is a management solution for managing complete oracle environment.
This can be used to monitor and manager various resources like hosts,
databases, listeners, application Servers,
HTTP
Servers and Web applications.
IT
systems these days are increasing very fastly. IT systems may require
huge number of systems that are separated geographically. Managing
these along with hosts, applications servers, web servers and
applications deployed into these is a complex task.OEM helps in
handling this task in an efficient manner.
OEM
- Extracts information needed for critical and timely decisionsLike why is the host getting down, why are the transactions taking long time to run
- Manages number of systems in an efficient waySystems can be arranged in groups based on their working area. Groups can be created like database, application server, web server, and host groups etc and also based on functionality area like finance, geographical area etc.
- Manages the ecosystem which may include third party software, storage system etc
- Reduce Hardware and labor costs
- Security
OEM
not only manages system also provides various security features. It
can be combined with virus software to provide virus protection. It
also provides various information regarding patches that are applied
or that needs to be applied. It also provides information about
various policy violations and also policy implementations.
Enterprise
Manager provides the tools and framework needed for you to manage all
the pieces that comprise your system and hardware environment.
The
Major components are
Managed
Targets: Objects
such as Databases, Application Servers, Web Servers, Applications and
Oracle agents (Oracle Net listener and Connection Manager) are the
objects called Managed Targets administered using OEM framework. They
can be added or deleted when needed.
Oracle
Management Agent (Management Agent):
Responsible
for monitoring all targets on the host, for communicating that
information to the middle-tier Management Service, and for managing
and maintaining the host and its targets
Oracle
Management Service (OMS): A
web component interface used to monitor and control managed Targets.
Or
A
J2EE Web application that renders the user interface for the Grid
Control, works with all Management Agents in processing monitoring
and job information, and uses the Management Repository as its data
store.
Oracle
Management Repository (Management Repository):
Storage of configuration and monitoring information collected about
the managed targets. It comprises two table spaces in an Oracle
Database that contain information about administrators, targets, and
applications that are managed within Enterprise Manager.
The
Management Service uploads to the Management Repository the
monitoring data it receives from the Management Agents. The
Management Repository then organizes the data so that the data can be
retrieved by the Management Service and displayed on the Grid
Control. The
Management Repository consists of schema definitions, RDBMS jobs, and
stored procedures running inside an Oracle database.
Various
pieces of information is stored including,
Configuration
details about the managed targets
Historical
metric data and alert information
Client
and Web server response time information
Managed
target availability information
Product
and patch inventory
information
Oracle
Enterprise Manager 10g Grid Control:
Enterprise Manager Web-based user interface for centrally managing
your entire computing environment. Using this we can you can monitor
and administer your entire computing environment from one location on
the network. All the services within your enterprise, including
hosts, databases, listeners, application servers, HTTP Servers,
And
Web applications, are easily managed as one cohesive unit.
And
also
Oracle
Enterprise Manager 10g Database Control:
For managing the Database
Oracle
Enterprise Manager 10g Application Server Control:
The
Enterprise Manager Web-based application for managing Oracle
Application Server 10g.The Application Server Control is installed
and available with every Application Server 10g installation. Using
this we can monitor and administer a single Oracle Application Server
instance, a farm of Oracle Application Server instances, or Oracle
Application Server Clusters.
Enterprise
Manager Security Framework
This
provides safe and secure communication between various components of
the Enterprise Manager. Generally In production Environments we
install the components on various systems. The Management component
on one system, Agents on systems that need to be managed. The
communication between these various components is handled by
Enterprise security framework.
How
it Works
More
To Come , Happy Learning :-)
