Logging Into the Grid Control
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When you install the Grid Control, a super-administrator account, SYSMAN, is automatically installed, and you provide the password for it at that time. You use this SYSMAN account to log into OEM for the first time. You can t rename or delete this account, but you can later set up administrator accounts for various users who need to use the Grid Control to manage databases. You can limit the privileges of each administrator to control which databases they can access, and you can set up customized notification rules for them.
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You must log into the Grid Control using the SYSMAN account, not your database accounts like sys or system.
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Once you successfully log into the Grid Control, you ll be in its home page. From the home page, you can manage databases either by choosing Databases from the drop-down list of targets or by clicking the Targets tab and clicking the Databases link.
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Features of the Grid Control
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The Grid Control is an enormously powerful monitoring and management tool. I devote the following sections to explaining the important features, but I make no attempt to cover the various database management features, which are identical to those in the Database Control.
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Enterprise Configuration Management
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You can perform the following two enterprise-wide configuration-related tasks through the Grid Control: Obtaining host and database configuration information Changing the configuration
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Obtaining Host and Database Configuration Information
Management Agents, which run on the database hosts, collect configuration information about their hosts and send it back to the OEM s Management Repository every 24 hours. Here s what they send: Memory, CPU, and I/O configuration on the host Details about the operating system, such as vendor, version, installed software components, patches, and database patch information Properties associated with the database and its instances Information about tablespaces and datafiles Information about control files and redo logs
Monitoring and Managing Enterprise Configuration
You can use the Grid Control to monitor and manage the configuration once it has the relevant details. Here s what the Grid Control allows you to do with respect to managing your configuration: Look at and contrast the hardware and software configurations of different hosts and databases. Monitor any changes to host configurations. Summarize your configuration. Search for configurations. Carry out cloning operations on Oracle homes and database instances. Look at violations of host and database policies. Patch Oracle and manage warnings about critical patches.
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To facilitate the management of a large number of targets, the Grid Control lets you organize large numbers of systems into groups. For example, you can grant a Grid Control user access only to certain groups. You can group targets into homogeneous groups (databases only, for example) or heterogeneous groups (such as a database, listener, application server, and host server).
Using the Grid Control Home Page
The Grid Control home page provides an overall view of the entire enterprise. Use this as your starting point when you re evaluating the health of your database, since it provides information about the entire Oracle environment, not just the database. The home page shows you the following things: Status: Provides the status of the monitored Oracle targets, including the availability and open alerts for each target. Targets include hosts, databases, web servers, and listeners. Critical Patch Advisories: Displays a visual summary of any patch advisories and the affected Oracle homes. Deployments Summary: Provides a summary of your entire system configuration, including hardware and software. Resource Center: Provides links to Oracle documentation, release notes, support, and the Oracle Technology Network (OTN). The Grid Control home page contains tabs that offer links to the following entities: Targets: Targets include the host servers, databases, application servers, web applications, and groups. Deployments: The Deployments home page has sections for critical patch advisories, deployments, configuration, patching, cloning, and policies (managing policy violations). Alerts: This page will tell you if any of your targets are down. Jobs: The Job Activity page contains information on all scheduled, running, and finished jobs in your database. Management System: This page contains information about the Management Service and the Management Repository. It provides details about the general health of OEM, availability, backlogs, and alerts about the OEM itself and all the targets. At the top (and the bottom) of the Grid Control home page, you ll find additional links to the following pages: Setup: The Setup page is similar to the Setup page in the Database Control. Preferences: The Preferences page is where you can change preferred credentials, including the password of the SYSMAN account. Help: This page provides details about each of the pages in the Grid Control. Logout: This link will log you out of the Grid Control.