Oracle Database 11 g - Online Public Access Catalog

158 CHAPTER 3 ■ DATABASE ADMINISTRATIONAdvisor, and Optimizer Statistics Gathering. The Optimizer Statistics Gathering job, of course,collects optimizer statistics on various database objects during the daily maintenance window.The Segment Advisor, as in the older release, shows the amount of unused space you can reclaimfrom various segments. By having key maintenance tasks as part of a framework, you can exertcontrol over their scheduling and resource usage.The new automatic maintenance task introduced in this release is the Automatic SQLTuning Advisor task, which identifies ways to improve the execution plans for high-load SQLstatements.New Related LinksIn Oracle Enterprise Manager 11g, you have a set of new links in the Related Links section onthe home page. Here’s a summary of the important new links.Policy Groups LinkThe Policy Groups link lets you manage all policy groups defined in your database. You’ll havepredefined policy groups such as Secure Configuration for Oracle Database and Secure Configurationfor Oracle Listener. The Secure Configuration for Oracle policy group ensures that yourdatabase is following best-practice security configuration settings in order to make the databasesecure. The Policy Groups page has three tabs leading to the following pages:• Policy Group Evaluation Results page: Summarizes how the targets are adhering to thestandards of the policy group.• Policy Group Library page: Shows all the policy groups available in your organization.Figure 3-2 shows the Secure Configuration for Oracle Database page.Figure 3-2. The Secure Configuration for Oracle Database page• Policy Group Evaluation Errors page: Shows any errors that occurred during the evaluationof the targets.