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CHAPTER 11 Monitoring and Diagnosing Fus... > Understanding Fusion Middleware Logg...

Understanding Fusion Middleware Logging

The simplest, and sometimes most effective, way of analyzing a Fusion Middleware environment’s health and failure conditions consists of examining the environment’s log files. To do so, however, requires a good understanding of the Fusion Middleware logging infrastructure—that is, the way log files are generated—as well as the format of the content of the log files. There are two categories of log files within a Fusion Middleware environment: log files generated by WebLogic Server, and log files generated directly by Fusion Middleware layered components. The former is managed by the WebLogic Server logging infrastructure, whereas the latter is managed through the Oracle Diagnostics Logging (ODL) framework, which we reviewed in Chapter 3. The analysis of both types of log files is important because issues may arise from WebLogic Server resources used by Fusion Middleware layered components (in which case the WebLogic Server logs would be the main source of information for diagnosing the problem) or they may be caused directly by malfunction at the layered component level (in which case the analysis of the ODL log files becomes necessary). In this section we review both of these logging infrastructures and their relationship to each other.


  

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