Managing Systems and Services Using Oracle Enterprise Manager 10g Grid Release 2
Managing Systems and Services Using Oracle Enterprise
Manager 10g Release 2
This tutorial covers how Oracle Enterprise Manager 10g Release 2 enables you to manage and monitor systems and services, including
Web applications.
Approximately 1 hour
This tutorial covers the following topics:
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functionality in the Oracle Enterprise Manager 10g Grid Control console.
The objective of this tutorial is to provide a general guideline
for examining the systems and topology features in Oracle Enterprise Manager
10g Release 2, and understanding how to monitor services in a business environment.
The intent is to verify that you can:
- Monitor systems in your environment using Oracle Enterprise Manager 10g Release 2.
- Model and monitor simple and complex business and IT services.
- Examine end-user activity and diagnostics for Web applications.
Here we are assuming that a number of systems and services,
including a Web application, are already created and configured in Grid Control.
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A system is the infrastructure used
to host one or more services. A system consists of components such as hosts,
databases, and other targets. To examine the systems and topology features,
perform the following steps:
| 1. |
Open the browser and enter the following URL:
http://<management
service hostname>.<domain>:<port>/em/
The default port value on a clear machine is 7777. However,
if there are other instances running on the machine, then the port may
be different.
The login page will be displayed. Enter the User Name and Password, and
then click the Login button.
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2.
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From the Grid Control home page,
click Targets.
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3.
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Click Systems.
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| 4. |
Click any system from the list.
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| 5. |
On the Home page of the system, you see the availability status, status
of the services within a system, all changes made to the configuration
of the system in the last seven days, alerts, policy violations, security
policy violations and advice on critical patches. Click the Charts
subtab to see various performance charts associated with this system.
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| 6. |
You see charts displayed for various performance metrics. Using the Customize
Charts button you can customize these charts. Click the Administration
subtab, which allows you to perform administrative tasks.
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| 7. |
Using this tab you can view the job activities for the system, execute
a host command, view the deployment summary, create blackouts, and perform
configuration searches. Click the Components subtab to view the
components that make up the system.
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| 8. |
From this tab you can view all key components of the system. Click the
Topology subtab to visually assess the overall health of the components
in the system.
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| 9. |
Click the Launch Dashboard button.
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| 10. |
Using the System Dashboard, you can view all the critical components
and their status. It also shows the alerts that are generated for the
components. You can customize the System Dashboard by clicking the Customize
link at the top right corner. Select the system name at the top of the
Dashboard to go back to the System home page.
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A "service" in Oracle Enterprise Manager 10g Release 2 represents a business
function supported by one or more protocols such as DNS, LDAP, POP or SMTP.
A service can also be a Web application, or other specific applications such
as Oracle Collaboration Suite. To view the services that are monitored by Oracle Enterprise Manager 10g Grid
Control, perform the following steps:
| 1. |
Click the Services tab.
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| 2. |
Click any Web application on the Services page.
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| 3. |
The Services Home page provides a general overview of the status, availability,
performance, usage, and expected service level % of the service. It also
provides a summary of the status and alerts for all key components of
the Web application. Click the Test Performance subtab.
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| 4. |
The availability of a service can be determined by running key 'tests'
for a generic service, or 'transactions' in the case for Web applications.
On the Test Performance page, you can view the individual performance
of any key test. Click the System subtab.
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| 5. |
A system is a logical grouping of hardware, software, network and other
IT assets working together to support one or more services. A system normally
consists of components such as hosts, databases and other Enterprise Manager
targets. This page displays a summary of all components and key components
and their statuses. You can drill down to investigate any component problem
by simply drilling down on any problematic component. Click the Topology
subtab.
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| 6. |
This page provides a graphical view of the service dependencies and the
system on which the service runs. The possible causes of service failure
are highlighted and identified by the Root Cause Analysis feature. Click
the Monitoring Configuration subtab.
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| 7. |
The Monitoring Configuration page enables you to perform various configuration
tests such as setting up systems, Root Cause Analysis, service tests and
beacons. It also enables you to define service availability, enable performance
and usage metrics, and perform Web application configuration tasks. Click
System Configuration.
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| 8. |
The System Configuration page enables you to change the system that hosts
your service. You can also determine which system components are considered
"key" components for your service. The availability of your
service can be determined by the availability of your designated key components.
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In addition to the service monitoring features in the previous
sections, Oracle Enterprise Manager 10g Release 2 also provides additional service monitoring tools
for Web applications. With Oracle Enterprise Manager 10g Release 2, you can also monitor the actual
end-user performance for every page of a Web application, as well as diagnose
application performance problems. To demonstrate these additional Web application
features, perform the following:
| 1. |
Click the Web Applications tab.
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| 2. |
This is a summary of the Web application services that are being monitored
by Enterprise Manager. Click any Web application from the list..
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| 3. |
This brings you to the Home page for this application and provides an
overview of the status, alerts, availability %, performance, usage, and
service-level compliance. Click Page Performance.
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| 4. |
The End-User Performance feature enables you to monitor the actual end-user
performance for all pages of an application. You can configure a "Page
Watch List" to specifically watch critical pages of your application.
The number of "Samples" shows how many complete and incomplete
page loads were experienced by actual end-users for a URL. In the Slowest
Response Times section, select Visitor from the View By drop-down
list.
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| 5. |
You see a list of users who have experienced slowest response times.
You can also view slowest response times by URL, Domain, Region, and Web
server. You can click the Analyze button to navigate to a feature that
enables you to further analyze response time data by using a combination
of the View By filtering criteria. Click Request Performance.
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| 6. |
Oracle Enterprise Manager 10g Release 2 provides tracing information across the application
stack for all page requests. Page request response times are broken down
into Web Server, J2EE (JSP, servlet, EJB), and database times. This feature
enables you to quickly identify the cause
of an application performance problem. From the Slowest Request By
drop-down list, select Database Server Average Time. Then, click
the Database Time portion of the Server Time Details bar chart
for the top slowest request by average database server time.
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| 7. |
This is a summary of the request performance in the database. In the
Processing Time Breakdown section, click the Database Time
value link.
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| 8. |
This shows you all the SQL statements that have contributed to this database
time. By looking at the SQL statement(s) with the top % request time(s),
you can identify the SQL statements that
may have caused a performance problem in your application. Click the Processing
Call Stack link at the bottom of the page in the Performance Details
Links section.
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| 9. |
Click Expand All.
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| 10. |
This is a powerful tool that can help you isolate problem areas by enabling
you to view the entire processing call stack for a request.
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In this lesson, you learned how to:
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Examine Systems and Topology Features
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Monitor services using Oracle Enterprise Manager 10g Release 2
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Monitor end-user performance and diagnose Web
application problems |
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To ask a question about this OBE tutorial, post a query on the OBE
Discussion Forum. |
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