Configuring Log Files and Filtering Log Messages

      

Introduction and Roadmap

Document Scope and Audience

Guide to This Document

Related Documentation

Logging Samples and Tutorials

 

Avitek Medical Records Application (MedRec) and Tutorials

 

Log4j Integration in MedRec

 

Logging Examples in the WebLogic Server Distribution

New and Changed Logging Features in This Release

Understanding WebLogic Logging Services

What You Can Do With WebLogic Logging Services

How WebLogic Logging Services Work

 

Components and Environment

 

Terminology

 

Overview of the Logging Process

 

Best Practices: Integrating Java Logging or Log4j with WebLogic Logging Services

 

Server Log Files and Domain Log Files

 

How a Server Instance Forwards Messages to the Domain Log

Server and Subsystem Logs

 

Server Log

 

Subsystem Logs

Log Message Format

 

Format of Output to Standard Out and Standard Error

Message Attributes

Message Severity

Viewing WebLogic Server Logs

Configuring WebLogic Logging Services

Configuration Scenarios

Overview of Logging Services Configuration

 

Using Log Severity Levels

 

Using Log Filters

Logging Configuration Tasks: Main Steps

Log4j and the Commons Logging API

 

About Log4j

Loggers

Appenders

Layouts

How to Use Log4j with WebLogic Logging Services

 

Enabling Log4j Logging

How to Use the Commons API with WebLogic Logging Services

 

Specifying Severity Level for Loggers

Specifying Severity Level for WebLogic Server Subsystem Loggers

Specifying the Severity Level for Commons Logging API Loggers

Rotating Log Files

 

Specifying the Location of Archived Log Files

 

Notification of Rotation

Redirecting JVM Output

Filtering WebLogic Server Log Messages

The Role of Logger and Handler Objects

Filtering Messages by Severity Level or Other Criteria

Setting the Severity Level for Loggers and Handlers

 

Setting the Level for Loggers

 

Setting the Level for Handlers

Setting a Filter for Loggers and Handlers

 

Filtering Domain Log Messages

Setting a Severity Level and Filter on a Log4j Appender

Subscribing to Messages

Overview of Message Handlers

Creating and Subscribing a Handler: Main Steps

Example: Subscribing to Messages in a Server JVM

 

Example: Implementing a Handler Class

 

Example: Subscribing to a Logger Class

Example: Implementing a Log4j Appender Class

Comparison of Java Logging Handlers with JMX Listeners


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