Oracle® Enterprise Manager Concepts
10g Release 2 (10.2)
Businesses today place increasing demands on their IT systems and staff. Part of this demand is on administrators to be available at any time to meet unforeseen crises. Enterprise Manager helps to meet this demand by providing EM2Go, an Internet-enabled architecture that allows you to manage from anywhere and at any time.
This chapter contains the following sections:
EM2Go is the mobile management application designed for the Oracle Environment. Not only can you monitor Enterprise Manager from your desktop, you can monitor while you are on the go. Because EM2Go is installed as part of Enterprise Manager, no additional configuration is necessary. You simply direct your personal digital assistant (PDA) that supports Microsoft Pocket PC IE to the Enterprise Manager UI and you access the EM2Go interface.
EM2Go offers a highly secure solution as it leverages the Enterprise Manager security features. EM2Go utilizes HTTPS communications and the security model of administrator privileges and roles. When you connect your browser to the EM2Go URL, a login prompt is issued for you to enter your Enterprise Manager preferred credentials (Figure 10-1). You will then only see the targets to which you have been granted privileges.
A lost or stolen device is no longer a security risk because no enterprise data is stored on the device itself.
Note:If you are using EM2Go in a firewall environment, refer to "Configuring Enterprise Manager for Firewalls" in Oracle Enterprise Manager Advanced Configuration for information about accessing Oracle Enterprise Manager 10g Grid Control through a firewall.
EM2Go provides an intuitive interface, similar to the Grid Control console. Because the layout is easy to use, you can quickly assess the availability and health of the Oracle Environment. Figure 10-2 displays a consolidated and personal Grid Control Console Home page.
The EM2Go Home page provides high-level data to isolate and repair availability and performance problems.
On the EM2Go home page:
From the Alert and Availability section, you can drill down to investigate the problem that generated the alert.
From the Targets section, you can click the type of target in which you are interested. The associated target home page displays only the most important metrics, thus helping you to quickly isolate and diagnose the root cause of the problem.
In addition to monitoring targets, EM2Go supports the administration of Host and Oracle Database targets.
The EM2Go subset of Enterprise Manager functionality is specific to the needs of the mobile administrator. EM2Go enables the following services available in Enterprise Manager.
You can schedule notifications to be sent by way of email to your PDA.
If a target becomes unavailable or experiences performance problems, an alert is generated to both the Grid Control console and EM2Go.
For example, you receive an email notification that the Tablespace Full metric has triggered. You log into EM2Go to view the alert details. To help solve the problem, you can use the host information to check the file system space available. You can then use EM2Go to increase the size of the tablespace by enabling automatic extension of one of the tablespace datafiles, manually resizing one of the datafiles, or adding another datafile.
EM2Go provides a tool that allows you to enter and execute SQL/OS commands dynamically. For example, you receive an alert from the CPU Utilization for Top Processes % metric through mobile email. Use the Execute OS Commands tool to check the load on the system using the following UNIX commands: uptime, top, or ps -ef.
Using EM2Go, you can monitor the performance of your environment by:
Displaying all metric warnings and alerts together with a metric history graph.
Accessing the database home page, which provides information about the status of the database and the administration and configuration of the database environment.
Studying key performance metrics to quickly assess the health of the host.
Viewing storage information about tablespaces and datafiles.
Observing transaction alerts, beacons, and availability of your Web applications.
Studying availability and performance metrics of your Oracle Application Server.