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Oracle WebLogic Server 12c Advanced Administration Cookbook by Dalton Iwazaki

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Chapter 6. Troubleshooting WebLogic Server 12c

In this chapter, we will cover the following recipes:

  • Changing log levels to debug
  • Including the time taken field in access.log
  • Enabling verbose garbage collection logging
  • Taking thread dumps
  • Enabling the JRockit Mission Control Flight Recorder
  • Analyzing a heap dump
  • Recovering the WebLogic admin password
  • Recovering the data source password

Introduction

Problems in the WebLogic environment can be exemplified as application errors, a JVM crash, when the application hangs and stops responding or when the client starts to feel the application is responding slower than usual.

All these examples are common problems in a production environment and they are usually solved by simply bouncing/restarting the affected Managed ...

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