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            課程大綱
             


            Introduction to Diagnostic Patterns
            Overview of Patterns
            What is a Pattern
            Identifying Support Pattern Methodology
            Why Use Support Patterns
            Identifying Support Pattern Resources
            Common Diagnostic Tools
            JVM Management: Java SE 6.0 Monitoring and Management Architecture
            Identifying Processes and Threads
            Obtaining a Thread Dump Using WLS
            Memory: Define Java Heap
            Garbage Collection Review
            Configuring JRockit Heap
            Server Core Dump Pattern
            Identifying Server Core Dump Pattern
            Symptoms and Causes of a Server Core Dump
            Identifying Why Core File is Not Produced
            Investigating Causes of Server Core Dump
            Overview of Investigation
            Overview of Core File Tools
            Overview of Standard Investigation Tools
            Creating Troubleshooting Checklist
            Generic Server Hang Pattern
            Symptoms and Causes of a Server Hang
            Investigation of Server Hang
            Basic Investigation Steps
            View the Execute Threads
            Thread Dump on a Running Server
            Analysis and Troubleshooting Investigation Results
            Setting Server Thread Counts
            Troubleshooting Strategy
            Identifying High CPU Usage Pattern and Describing Resolution Steps
            Identifying High CPU Usage Pattern
            Review: Processes and Threads
            Investigating High CPU Usage: On Solaris, Linux, and Windows OS
            Analyzing the Server Instance to Determine What Threads are Causing the Issue
            Using the Analyzed Information to Identify Areas Where Performance Tuning is Required
            Analyzing and Diagnosing Out of Memory/Memory Leak Patterns
            Review of General Memory Concepts: Java Heap, Native Memory, and Memory Leaks
            Investigating Java Heap Out of Memory Errors
            Review Garbage Collection and Object References
            Symptoms, Causes, and Troubleshooting of Out of Memory in Java Heap
            Investigating Out of Native Memory Conditions
            Review: Process Size, Virtual vs. Physical Memory
            Symptoms, Causes, and Troubleshooting of Native Out of Memory Conditions
            Generic JDBC Pattern
            Understanding Generic JDBC Pattern
            Review: JDBC Database, Datasources, Connection Pool, and Statement Cache
            Investigating JDBC Problems
            Server Startup: Failed Pool Creation
            Causes of Resource Exceptions
            Overview of Insufficient Connections
            Troubleshooting WebLogic Server Crashes
            Troubleshooting WebLogic Server or Application Hangs and Memory Leaks
            Troubleshooting Too Many Open Files Pattern
            Symptoms, Causes, and Troubleshooting of Too Many Open Files Problem
            Identifying a WebLogic System That Has Too Many Files Open
            Using Available Tools to Determine Which Component Has Too Many Files Open and What the Files Are
            Describing and Diagnosing Class Exception Patterns
            Describing Class Cast Exception Pattern
            Investigating Class Exceptions and Errors
            Adding Application Code Diagnostics
            Identifying Different Class Loaders
            Describing Known WLS Issues
            Understanding and Troubleshooting Class Casting Issues
            Understanding and Troubleshooting Basic Class Loader Issues
            Understanding Symptoms, Causes, and Tools to Troubleshoot Multicast Patterns
            Reviewing a WebLogic Server Cluster and Clustered Server Communication
            Describing Multicast Problems and Investigation
            Configuration Errors and Physical Network Problems
            Multicast Timeouts
            Clustering Heartbeat Problems and Multicast Storms
            Testing and Debugging Multicast Patterns
            Discussing Some of the Potential Multicast Issues that Can Occur in a WebLogic Server Cluster
            Understanding the Processes Involved in Identifying and Resolving the Issues
            General Diagnostics for Proxy Plug-ins Pattern
            Diagnosing and Troubleshooting Proxy Plug-ins Pattern
            Gathering Plug-in Diagnostics
            Switching on Debugging for the WebLogic Server Proxy
            Knowing Where to Look in the WebLogic Server Console and Proxy Logs for Issues
            Identifying, Investigating, and Diagnosing HTTP Session Replication Failures Pattern
            Reviewing HTTP Session Replication Failures Pattern
            Causes, Symptoms, and Examples of HTTP Session Replication Failure
            Investigating HTTP Session Replication Failures
            Gathering Diagnostics: Enable Debug
            Understanding How the WebLogic Server Proxy Server Works with Respect to HTTP Session Replication and Failover
            Discussing Various Aspects of HTTP Session Replication Configuration and Operation

             
             
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