6
Using the Oracle Enterprise Manager Web Site

With Oracle9iAS Release 2, Oracle introduces the Oracle Enterprise Manager Web site, which provides Web-based management tools designed specifically to help you manage the Oracle9i Application Server.

Using this Web site, you can monitor and configure the components of your Oracle9i Application Server installations. You can deploy applications, manage security, and create and manage Oracle9i Application Server clusters.

The Oracle Enterprise Manager Web site consists of:

• The underlying software technologies that keeps track of your Oracle9i Application Server instances and components. These technologies automatically discover the components of each Oracle9iAS instance, provide administration security, gather and process performance data, and provide access to application configuration information.

• The Enterprise Manager Home Pages you use to manage Oracle9iAS. These Web pages provide you with a high-level view of your Oracle9i Application Server environment.

For detailed instructions on administering the Oracle9i Application Server, refer to the Oracle9i Application Server Administrator's Guide.

Enterprise Manager Home Pages

Oracle9iAS represents a wide variety of software solutions designed to help you run all aspects of your business. As a result, you'll want to manage Oracle9iAS from many different points of view. At times, you may want to manage a set of Oracle9iAS instances to compare their performance. You may find it efficient to combine multiple instances into an Oracle9iAS cluster.

Other times, you'll want to manage an individual Oracle9iAS instance or a specific component--or even a specific Web application used to run your business or support your customers.

Further, different administrators may specialize in managing specific aspects of our Oracle9iAS environment. One administrator may monitor your J2EE application deployments. Another may be responsible for managing your implementation of Oracle Portal.

To support these multiple levels of management, Oracle introduces the Oracle Enterprise Manager Home Pages. Each Home Page provides the information you need to monitor the performance and availability of Oracle9iAS from a particular point of view or level of management detail. Selected Home Pages also provides tools for configuring your Oracle9iAS components.

The following Home Pages are available when you use the Oracle Enterprise Manager Web site:

Farm Home Page

Use the Oracle9iAS Farm Home Page to view a set of related Oracle9i Application Server instances on your network and to create clusters that speed up the configuration and deployment of your Web applications. For more information, see Using the Oracle9iAS Farm Home Page.

Instance Home Page

Use the Oracle9iAS Instance Home Page to manage all aspects of an individual Oracle9iAS instance.

Component Home Page

Drill down to a component Home Page to monitor or configure an individual component of the application server. For example, use the Oracle HTTP Server Home Page to monitor the performance of your Web server, or use the OC4J Home Page to deploy a custom Web-based application.

For detailed instructions on administering the Oracle9i Application Server, refer to the Oracle9i Application Server Administrator's Guide.

Accessing the Oracle Enterprise Manager Web Site

The easiest way to view the Oracle Enterprise Manager Web site is immediately after you install Oracle9iAS. At the end of the installation, Oracle Universal Installer displays the Oracle9iAS Welcome Page.

From the Welcome Page, click Oracle Enterprise Manager to start the Oracle Enterprise Manager Web site and display the appropriate Home Page for your installation.

To view the Oracle Enterprise Manager Web site in all other cases:

1. Enter the following address in your Web browser:

   http://<hostname>:<port_number>/
   
   

   For example, if you installed Oracle9i Application Server on a host called SYS12, you would enter the following address in your Web browser:

   http://SYS12:1810
   

2. Enter the Oracle9i Application Server administrator username and password.

   The default username for administrator user is ias_admin. The default password is defined during the installation of Oracle9iAS.

3. Click OK.

   Depending upon the components you configured during the Oracle9i Application Server installation, Enterprise Manager does one of the following:

   • If you configured only components that do not require the Oracle9i Application Server Infrastructure, Enterprise Manager displays the Oracle9iAS Instance Home Page. Use this page to monitor and configure the single application server instance installed on this host. For more information, see Using the Oracle9iAS Instance Home Page.

   • If you configured any components that require the Oracle9i Application Server Infrastructure, Enterprise Manager displays the Oracle9iAS Farm Home Page. Use the Farm Home Page to view a list of all the Oracle9i Application Server instances associated with this particular Oracle9i Application Server Infrastructure. For more information, see Using the Oracle9iAS Farm Home Page. You can use also use the Farm page to group multiple Oracle9i Application Server instances into clusters. For information about managing clusters, see "Managing Clusters" in the Oracle9i Application Server Administrator's Guide.

   • If you installed more than one Oracle9iAS instance on the host computer, Enterprise Manager displays the Application Server page, which lists all the Oracle9iAS instances installed on the host computer. Click the name of an instance to drill-down and display the appropriate Oracle9iAS Instance Home Page.

Using the Oracle9iAS Farm Home Page

If you configured one or more applications that require the Oracle9iAS Infrastructure, your start page for the Oracle Enterprise Manager Web site displays the Oracle9iAS Farm Home Page.

The Farm Home Page displays a list of the application server instances associated with your Oracle9i Application Server Infrastructure.

You can add a particular Oracle9iAS instance to the Infrastructure using the Use Infrastructure link on the Oracle9iAS Instance Home Page. For more information, see Using the Oracle9iAS Instance Home Page.

There are several advantages to using the Farm Home Page. First, you can view, compare, and easily monitor multiple Oracle9i Application Server instances on multiple hosts.

Second, and more importantly, you can create and manage Oracle9i Application Server clusters. For more information about how clusters can speed up and reduce the complexity of configuring and deploying your Web applications, see "Managing Clusters" in the Oracle9i Application Server Administrator's Guide.

Figure 6-1 The Oracle9iAS Farm Home Page

Text description of the illustration farmpage.gif

Using the Oracle9iAS Instance Home Page

From the Enterprise Manager Home Page you can start and stop the application server, monitor the overall performance of the server, and review the components of the server.

You can also drill down and examine the performance of a particular component and configure the component. The Home Page provides controls for starting and restarting the server, as well as the high-level metrics that tell you how the server is currently performing.

Figure 6-2 Oracle9iAS Instance Home Page

Text description of the illustration ias_home.gif

The Home Page is divided into several sections:

• Application Server

• System Components

• Administration

Application Server

This section allows you to start and stop the application server and to monitor the overall performance of the server.

To start or stop the server, click on the appropriate button in the General area of Application Server section.

To monitor various aspects of server, including its status, check the information displayed in the Application Server section.

The table below details the information displayed in the Application Server section.

Table 6-1 Application Server Information

Function	Information
General	Informs us of the "Current Status" of the Oracle9i Application Server. It also displays a "traffic signal" indicating the current status of the Oracle9i Application Server. Displays the host name of the machine that Oracle9i Application Server is installed on. Provides appropriate button to start or stop the Oracle9i Application Server.
CPU Usage	Provides CPU usage information for Oracle9i Application Server in a colored pie chart and a list.
Memory Usage	Provides memory usage information for Oracle9i Application Server in a pie chart and a list.

System Components

If you scroll down the page, the Home Page provides a table that lists the components of the application server. From this table, you can also get a snapshot of how each individual component is performing.

Table 6-2 System Components

Function	Information
Name	Lists all the component instances that are currently configured. Select an instance name and start, stop, or restart it using the appropriate buttons located on the top right side of the table. Click instance names to access their individual home page. From the home page, you can administer and monitor the component.
Type	Lists the types of all the corresponding components of Oracle9i Application Server.
Status	Displays appropriate icons that indicate the current status of the corresponding instance.
Uptime	Provides information, in days, regarding the time this instance has been running.
CPU Usage	Provides CPU usage information, in percent, for corresponding instance.
Memory Usage	Provides memory usage, in MB, regarding the corresponding instance.

From the System Components table, you can display a Home Page for each component of the application server. Home Pages are provided for all the standard application server components, such as:

• Oracle HTTP Server

• Oracle Containers for Java (OC4J)

• Oracle Web Cache

• Oracle Portal

Each component of Oracle9i Application Server can be started or stopped or restarted from either the System Components table on the Enterprise Manager Home Page or the component's home page.

1. Select the component by either clicking in the select box on its left. Some components can be managed from their home pages. For this, click on the component instance name in the Name column to access its home page.

2. Click on the appropriate button on top right of the System Components table to start or stop the component. If you are on the component home page, you can click on the appropriate start or stop button if they are available.

Administration

Under the Administration section of the Oracle9iAS Instance Home Page, the Use Infrastructure link allows you to add this particular instance to an existing Oracle9iAS Infrastructure. For more information, click Help at the top of the page.

Using an Oracle9iAS Component Home Page

Oracle9iAS component Home Pages vary from one component to another since each component has different monitoring and configuration requirements.

However, each of the component Home Pages has the following common elements:

• A general information section that provides the name and location of the component data and configuration files. In most cases, this section includes an icon that indicates the current state of the application and provides buttons for starting and stopping the component.

• Status information, including CPU and memory usage charts so you can get a snapshot of how the component is performing.

• Component-specific information, such as a list of Virtual Hosts on the HTTP Server Home Page or a list of deployed applications on the OC4J Home Page.

• Links to administrative functions where appropriate, so you can modify the configuration of selected components. In many cases, this means you can use an easy-to-use graphic user interface to modify complex configuration files.