IBM BS029ML Self Help Guide - Page 122
Administration, Portal, Analysis, Enable Tracing
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The traces can be enabled statically through the WebSphere Application Server's Administrative Console (under the Configuration tab), or by directly editing the file server.xml for that application server. Alternatively, the traces can also be enabled dynamically through the Runtime tab of the Admin console of the WebSphere Application Server, or the Enable Tracing portlet within WebSphere Portal administration (select Administration → Portal Analysis → Enable Tracing), as shown in Figure 4-6. Figure 4-6 Enable Tracing portlet The static approach requires a system restart, which is not always desirable. The dynamic option is preferred under some circumstances, for example, the server cannot be brought down and restarted. The customers have to be aware of the impact on performance, however. The runtime option uses the memory buffer from the Java Virtual Machine (JVM) heap. Depending on the settings on the memory buffer, a certain amount of memory on the heap will be used for the logging. We recommend setting the traces when you want to recreate the scenario and disable them when the recreation of the scenario is completed. 108 IBM WebSphere Portal V6 Self Help Guide
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