Databases Reference
In-Depth Information
6
Troubleshooting
WebLogic Server 12c
In this chapter, we will cover the following recipes:
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Changing log levels to debug
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Including the time taken field in access.log
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Enabling verbose garbage collection logging
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Taking thread dumps
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Enabling the JRockit Mission Control Flight Recorder
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Analyzing a heap dump
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Recovering the WebLogic admin password
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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 Server.
If the same problem becomes more and more frequent, a troubleshooting process must be
started. Troubleshooting is the analysis process to solve a specific problem.
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