Chapter 3: Getting Started with Oracle Enterprise Manager
Chapter 3: Getting Started with Oracle Enterprise Manager
This chapter introduces you to Oracle Enterprise Manager Database
Control. The Oracle Universal Installer installs Oracle Enterprise Manager Database
Control when you install the Oracle software. Enterprise Manager Database Control
provides a Web-based interface that you can use to manage your Oracle instance
and database.
Approximately 1 hour
This tutorial covers the following topics:
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Before you perform this tutorial, you should:
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The dbconsole process must be started for you to access
Oracle Enterprise Manager Database Control from a client browser. The dbconsole
process is automatically started after installation. If the process is not started,
you can manually start it at the command line.
| 1. |
Log on to the operating system as the oracle
user. Issue the following command to view the status of the dbconsole
process:
emctl status
dbconsole
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| 2. |
Issue the following command to start the dbconsole
process:
emctl start
dbconsole
|
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You can access the Oracle Enterprise Manager Database Control
as follows:
| 1. |
Open your Web browser and enter the following URL:
https://<hostname>:1158/em
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| 2. |
The Database Control Login page is displayed if the
instance is started. Enter a username and password for a user that is
authorized to access the Oracle Enterprise Manager Database Control. Click
Login.
Note: If this is the first time you have accessed
Enterprise Manager Database Control, you may see a page concerning licensing.
Review the information and respond appropriately to your situation.
Refer to Chapter 4 for detailed instructions on starting
the instance and opening the database.
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| 3. |
The Database Home page is displayed. You can access the Performance,
Availability, Server, Schema, Database Movement, and Software
and Support property pages from the Database Home page.
|
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In this section you will learn how to grant management privileges
to other database users. Administrators are database users defined in the Management
Repository who can log in to Enterprise Manager to perform management tasks.
The breadth of management tasks available in Enterprise Manager depends on the
privileges and roles assigned to the administrators.
Perform the steps listed below to grant management privileges
to other database users:
| 1. |
Click Setup in the right-hand corner at the top
of the Database Home page.
|
| 2. |
Click on the Administrator tab in the left menu.
The Administrators list is displayed.
|
| 3. |
Click Create to create a new Enterprise Manager
user by assigning the management privileges to an existing database user.
The Create Administrator: Properties page is displayed.
|
| 4. |
In this step you will grant administrative privileges
to the HR user. Enter the
following values:
Name: HR
Password: HR
Note: You can click the flashlight icon
next to the Name field to select an existing database user from the pop-up
window.
Click Review.
|
| 5. |
The Create Administrator: Review page appears. Click
Finish.
|
| 6. |
The Administrators page appears again and your new administrator
is included in the administrator list.
Click the Database tab to return to the Availability page.
|
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When you plan to bring your database down for maintenance,
you can indicate that you do not want alert notifications to be sent to you
by defining a blackout period. Blackouts also allow you to suspend monitoring
in order to perform other maintenance operations. You can define a blackout
time period in Enterprise Manager Database Control by performing the following
steps:
| 1. |
If already in the Setup page, click Blackouts
in the left hand pane.
|
| 2. |
The Blackouts page appears. Click Create to start
the Create Blackout wizard.
|
| 3. |
Enter a name for your blackout in the Name field.
You can also add comments in the Comments field although it is
not a required a field. Select Enter a new reason and enter a reason
for your blackout. Select Database Instance in the type drop-down
menu in the Available Targets region. Select your database and click Move
to add it to the Selected Targets list. (Note: The DB target
name may differ, depending on your installation). Click Next.
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| 4. |
The Create Blackout: Schedule page appears. Enter the
start time of your planned blackout, or choose immediately if you are
shutting down the database now. Select the duration of the blackout, either
as indefinite, as a length or time, or until a time in the future. Accept
the default of "Do Not Repeat" or select a repeat frequency
in the Repeat pull down menu. Click Next.
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| 5. |
The Create Blackout: Review page appears. Review what
you have entered and click Finish. You can click Back if you need
to change a setting.
|
| 6. |
You receive a confirmation message that your blackout
has been defined.
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You can set Preferred Credentials so that Enterprise Manager
will automatically supply host and database login credentials for you when you
schedule jobs and tasks to perform administrative operations like backup and
recovery. For security, Oracle stores preferred credentials in encrypted mode.
You can set preferred credentials in Enterprise Manager Database Control by
performing the following steps:
| 1. |
Click Preferences at the top of the Database
Home page.
|
| 2. |
The Preferences page appears. Click Preferred Credentials
in the left hand pane.
|
| 3. |
The Preferred Credentials page appears. Click the icon
under Set Credentials for the Database Instance Target
Type.
|
| 4. |
The Database Preferred Credentials page appears. Enter
the credentials in the form of username and password for
normal, SYSDBA and host connections. Click Test.
|
| 5. |
You receive a confirmation message that your credentials
have been verified. Click Apply to save your preferred credentials.
|
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In this tutorial, you learned how to:
 |
Start and verify the status of the dbconsole
process. |
|
Log into Enterprise Manager (EM) Database
Control. |
|
Granting administrator privileges to other
users. |
|
Define a blackout period for you database
instance. |
|
Set preferred credential information in EM
to be used later for administrative tasks. |
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