On many UNIX operating systems (including Linux and AIX) and on Windows, it is recommended that you configure HugePages for databases with a large SGA (such as greater than 2GB), and accompanying ASM instances. HugePages is also known as “Large Pages” for AIX and Windows. We will confine the HugePages discussion—and the steps to enable it—to Linux, […]
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The architecture and installation of Oracle Enterprise Manager GC 10g, GC 11g, and CC 12c differ for all components, and particularly for the OMS and Management Repository: OMS Architecture and Installation Both the architecture and installation of the OMS diverge between GC 10g, GC 11g, and CC 12c. The 11g and 12c Oracle Management Service […]
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The database link syntax for remote updates is the same as that for remote queries. Append the name of the database link to the name of the table being updated. For example, to change the RATING values for books in a remote BOOKSHELF table, you would execute the UPDATE command shown in the following listing: […]
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Java EE applications, service-oriented architecture (SOA), and composite applications are being increasingly employed by organizations to perform various functions. While these applications provide great flexibility, the other side of the coin is that they are harder to manage efficiently. Monitoring numerous WebLogic Server domains and enterprise applications deployed across multiple tiers has become an increasingly […]
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Privilege delegation allows OS users on a host target to run as a user with higher privileges via either Sudo or PowerBroker. These privileges are used during the Agent configuration process based on how the Agent installation is specified; however, in order to use privilege delegation after the installation has completed, it is necessary to […]
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In order to better understand the CC architectural model, let’s look at how CC components interact. The diagram in Figure 1 shows how data flows between components for both Console communications and Agent uploads of metric data and alerts. FIGURE 1. Data flow for each type of interaction between Cloud Control components Let’s follow the numbers and […]
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Cloud Control monitors a vast array of performance metrics automatically and compares them with predefined metric thresholds. You can have Cloud Control issue alerts whenever performance metric values exceed a specific threshold value, which serve as the triggers for the sending of alerts. You can specify both critical and warning alerts following the crossing of […]
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Real-time troubleshooting of slow-performing applications is not an easy task using traditional measures, as you need to spend critical time reviewing logs and other indicators of performance issues. OEM Cloud Control 12c offers powerful instrumentation that lets you search transactions based on their message content and time of arrival, thus helping quickly identify and fix […]
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The basic Cloud Control topology consists of four core components, as depicted in Figure 1: the Cloud Control Console, the Oracle Management Agent, the Oracle Management Service, and the Oracle Management Repository. Each component can be separated by a firewall. FIGURE 1. Topology of Cloud Control core components Following is a brief description of each […]
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Let’s talk about how to maintain the physical elements in your Cloud Control environment. Cloud Control can scale for hundreds of users and thousands of targets, but only if you’re diligent about maintenance for the life of the deployment. Such maintenance is necessary regardless of the workload or size of your site. The cornerstone of […]
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Once a middleware target such as an Oracle WebLogic domain is added to Cloud Control’s list of targets, you can view the status of that target. You can view alerts generated for each managed middleware target. For both individual deployed applications, WebLogic servers and WebLogic domains, you can view the following pages by selecting Monitoring […]
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Credentials are the heart of OEM Cloud Control security. When an administrator logs into OEM Cloud Control, they are only allowed to view basic monitoring information that is collected by the Agent. Additional information that is obtained by connecting to the Oracle database instance is done through individual credentials for each user. This allows database […]
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