07 ACE Oracle 2 Tier

07 ACE Oracle 2 Tier - Lab 7: Troubleshooting and...

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OPNET IT Guru Lab 7, Page 1 Lab 7: Troubleshooting and Predicting the Performance of an Oracle Application Objective Earlier labs focused on networks and internet (the physical layer through the transport layer). However, application layer performance is what users really care about. This lab uses OPNET’s Application Characterization Environment (ACE) module to visualize, troubleshoot, and predict application response times for a specific Oracle application. Overview OPNET’s Application Characterization Environment (ACE) provides powerful visualization and diagnosis capabilities that aid in application analysis. Network managers and application developers can use ACE to Pinpoint network and application bottlenecks. Diagnose application problems. Explore proposed fixes to existing applications. Predict application performance under varying configurations and network conditions. In this lab, we’ll analyze the performance of a 2-Tier (client/server) Oracle Application. We’ll investigate the probable bottlenecks, which lead to unacceptable response times. The subject application runs on the following topology. Clients access the Oracle Server in the data center through a high-bandwidth, low-latency Metropolitan Area Network (MAN). The client application response time is measured to be 12 seconds. Capture Traffic When solving application performance problems with ACE, it is important to follow the correct capture method. ACE is designed to diagnose a single application transaction. You must provide valid data: a trace file that
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OPNET IT Guru Lab 7, Page 2 includes only the application traffic. You must filter out extraneous packets because ACE considers them to be part of the subject application. Ideally, you would capture a trace that represents only one transaction. In reality, you will probably need to filter out extraneous messages. You can filter messages at three different times: When you capture the trace file from the network. Filtering by address or by port creates smaller capture files that require less post-processing. This is the recommended time to filter. During import. Within the ACE editors, as shown in this lab. For this lab’s capture file, trace captures have been taken simultaneously at both the client and the server. These captures are then merged to obtain the best analysis of delays at each computer and the network. Lab Instructions Step 1: Open the Oracle Application in ACE 1. Start IT Guru. 2. Select File Open… 3. Select Application Characterization from the pull-down menu. 4. Scroll down to the project named Oracle_2_Tier_Application , select it and click OK . If you get a message about not being able to open the file, then select Oracle_2_Tier_Application_B and click OK .
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OPNET IT Guru Lab 7, Page 3 Step 2: Visualize the Application The Data Exchange Chart appears. It is shown in the following figure. Analyze the application in detail using this Chart.
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07 ACE Oracle 2 Tier - Lab 7: Troubleshooting and...

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