I installed a newly purchased Windows 7 Professional 64-bit OEM disc onto one. Windows IP Configuration. The top left LED is the activity indicator. 5 Database Management. The Top Activity page. Oracle Enterprise Manager incorporates many features that help you to manage your database configuration. Managing Data Guard 11g R2 with OEM 11g. Managing Data Guard 11g R2 with OEM 11g. In this article we will look at what OEM offers to manage Data Guard. 80 Percent Design + 20 Percent Hardware. I use Average Active Session load in Top Activity Screen in OEM or a tool. A6 Configuration performance. OEM Configurator is a portable application by AskVG that allows you to personalize the information in the Windows System Properties section. Oracle Enterprise Manager - top activity. I'm looking at the Top Activity view in OEM. The left axis is labeled 'Active Sessions'. Overview of Oracle Enterprise Manager Cloud Control 1. This chapter provides an overview of Enterprise Manager Cloud Control 1. It contains the following sections: 1. About Enterprise Manager Cloud Control 1. Oracle Enterprise Manager is Oracle's integrated enterprise information technology (IT) management product line, which provides the industry's only complete, integrated, and business- driven enterprise cloud management solution. Oracle Enterprise Manager creates business value for IT by leveraging the built- in management capabilities of the Oracle stack for traditional and cloud environments, enabling customers to achieve unprecedented efficiency gains while dramatically increasing service levels. The key capabilities of Enterprise Manager include: A complete cloud lifecycle management solution enabling you to quickly set up, manage, and support enterprise clouds and traditional Oracle IT environments from applications to disk. Maximum return on IT management investment through the best solutions for intelligent management of the Oracle stack and engineered systems with real- time integration of Oracle's knowledge base with each customer environment. Best service levels for traditional and cloud applications through business- driven application management. Figure 1- 1 illustrates how Enterprise Manager Cloud Control offers a solution that enables you to monitor and manage the complete Oracle IT infrastructure from a single console. Figure 1- 1 Enterprise Manager Cloud Control. For more information about Enterprise Manager Cloud Control, access the following URL: http: //www. Enterprise Manager Cloud Control 1. Architecture. Although Enterprise Manager Cloud Control is viewed as a single entity, it is built with the following components: Oracle Management Agent. Oracle Management Service. Oracle Management Repository. Oracle Management Plug- ins. Enterprise Manager Cloud Control Console. Figure 1- 2 shows a sample Enterprise Manager Cloud Control architecture and illustrates how these core components fit into the architecture. Note. In Figure 1- 2, the load balancer and the multiple Oracle Management Services are depicted only to indicate how a sample Enterprise Manager Cloud Control architecture would look in a large organization. They are not a prerequisite or a requirement for an Enterprise Manager system installation. If you do not have a load balancer, then the Management Agents communicate directly with the Oracle Management Services. The following sections describe the core components of Enterprise Manager Cloud Control. Oracle Management Agent. Oracle Management Agent (Management Agent) is an integral software component that is deployed on each monitored host. It is responsible for monitoring all of the targets running on those hosts, communicating that information to the middle- tier Oracle Management Service, and managing and maintaining the hosts and its targets. Oracle Management Service. Oracle Management Service is a Web- based application that orchestrates with the Management Agents and the Management Plug- ins to discover targets, monitor and manage those targets, and store the collected information in a repository for future reference and analysis. Oracle Management Service also renders the user interface for Enterprise Manager Cloud Control. ![]() Oracle Management Services is deployed to the Oracle middleware home (middleware home), which is the parent directory that contains the Oracle Web. Logic Server home, the Oracle Management Service home, the Management Agent home, the plug- in home, the Java Development Kit (JDK), the Oracle Management Service instance base directory, the Oracle Web tier directory, the Oracle common directory, and other relevant configuration files and directories. While deploying the Oracle Management Service, the Enterprise Manager Cloud Control Installation Wizard installs Oracle Web. Logic Server if it does not already exist in your environment. As a result, an Oracle Web. Logic Server administration console is also installed. Oracle Management Repository. The latest information and perspectives on Oracle Enterprise Manager and Oracle. The subsequent configuration screen allows you to define. The Oracle Management Repository (Management Repository) is a storage location where all of the information collected by the Management Agent is stored. It consists of objects such as database jobs, packages, procedures, views, and tablespaces. Technically, the Oracle Management Service uploads the monitoring data it receives from the Management Agents to the Management Repository. The Management Repository then organizes the data so that it can be retrieved by the Oracle Management Service and displayed in the Enterprise Manager Cloud Control console. Because data is stored in the Management Repository, it can be shared between any number of administrators accessing the Enterprise Manager Cloud Control. At the time of installation, the Enterprise Manager Cloud Control Installation Wizard configures the Management Repository in your existing, certified database. The wizard, however, does not install a new database. Oracle Management Plug- ins. Monitoring Performance and Troubleshooting. Both Oracle Enterprise Manager Database Control and Oracle Enterprise Manager Grid Control are cluster- aware and provide a central console to manage your cluster database. Automatic Database Diagnostic Monitor and Oracle RAC Performance. The Automatic Database Diagnostic Monitor (ADDM) is a self- diagnostic engine built into the Oracle Database. ADDM examines and analyzes data captured in the Automatic Workload Repository (AWR) to determine possible performance problems in Oracle Database. ADDM then locates the root causes of the performance problems, provides recommendations for correcting them, and quantifies the expected benefits. ADDM analyzes the AWR data for performance problems at both the database and the instance level. An ADDM analysis is performed as each AWR snapshot is generated, which is every hour by default. The results are saved in the database and can be viewed by using Enterprise Manager. Any time you have a performance problem, you should first review the results of the ADDM analysis. An ADDM analysis is performed from the top down, first identifying symptoms, then refining the analysis to reach the root causes, and finally providing remedies for the problems. For the cluster- wide analysis, Enterprise Manager reports two types of findings: Database findings: An issue that concerns a resource that is shared by all instances in the cluster database, or an issue that affects multiple instances. An example of a database finding is I/O contention on the disk system used for shared storage. Instance findings: An issue that concerns the hardware or software that is available for only one instance, or an issue that typically affects just a single instance. Examples of instance findings are high CPU load or sub- optimal memory allocation. Description of the illustration addm. Instance time is the amount of time spent using a resource due to a performance issue for a single instance and database time is the sum of time spent using a resource due to a performance issue for all instances of the database, excluding any Automatic Storage Management (ASM) instances. An instance finding can be reported as a database finding if it relates to a significant amount of database time. For example, if one instance spends 9. CPU, and the sum of all time spent using the CPU for the cluster database is 1. A problem finding can be associated with a list of recommendations for reducing the impact of the performance problem. Each recommendation has a benefit that is an estimate of the portion of database time that can be saved if the recommendation is implemented. A list of recommendations can contain various alternatives for solving the same problem; you do not have to apply the recommendations. Recommendations are composed of actions and rationales. You must apply all the actions of a recommendation to gain the estimated benefit of that recommendation. The rationales explain why the actions were recommended, and provide additional information to implement the suggested recommendation. Viewing ADDM for Oracle RAC Findings. By default, ADDM runs every hour to analyze snapshots taken by the AWR during that period. If the database finds performance problems, then it displays the results of the analysis under Diagnostic Summary on the Cluster Database Home page. The ADDM Findings link shows how many ADDM findings were found in the most recent ADDM analysis. ADDM for Oracle RAC can be accessed in Enterprise Manager by the following methods: On the Cluster Database Home Page, under Diagnostic Summary, click the ADDM Findings Link. On the Cluster Database Performance, click the camera icons at the bottom of the Active Sessions Graph. In the Related Links section on the Cluster Database Home page or the Performance, click Advisor Central. On the Advisor Central page, select ADDM. Choose the option Run ADDM to analyze past performance and specify an appropriate time period, then click OK. To view ADDM findings from the Cluster Database Home page: On the Cluster Database Home page, under Diagnostic Summary, if a nonzero number is displayed next to ADDM Findings, then click this link. Description of the illustration addm. Database activity types are defined in the legend based on its corresponding color in the chart. Each icon below the chart represents a different ADDM task, which in turn corresponds to a pair of individual Oracle Database snapshots saved in the Workload Repository. In the ADDM Performance Analysis section, the ADDM findings are listed in descending order, from highest impact to least impact. The Informational Findings section lists the areas that do not have a performance impact and are for informational purpose only. The Affected Instances chart shows how much each instance is impacted by these findings.(Optional) Click the Zoom icons to shorten or lengthen the analysis period displayed on the chart.(Optional) To view the ADDM findings in a report, click View Report. The View Report page appears.
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