This section describes the output contents of the data for troubleshooting, from among the description related to the troubleshooting.

Determine the cause for a trouble on the basis of contents output to the acquired data. Note that among the data acquired in 2.3 Acquiring the Data, for the OS statistical information, see the manuals provided with the OS being used. Moreover, the memory dump is not explained here as it is checked by maintenance personnel.

Note

• In Windows, if you open a large log file (3 megabytes or more) with a text editor, the computer is burdened and this might affect the system. When you want to reference a log file, take proper precautions.
• Note the following points if you are using Windows Server 2012, Windows Server 2008, Windows 8, Windows 7, or Windows Vista.
  When there is a Unicode supplementary character in the contents output to a log or a PRF trace that supplementary character cannot be output correctly. Other than this, there will not be any problem in other output contents or the application operations. The Unicode supplementary character is sometimes included in the requests from the clients, such as Internet Explorer.
  

The following table describes the organization of this chapter.

Table 5-1 Organization of this chapter (Data Output Contents used for troubleshooting)

Category	Title	Reference
Explanation	Application Server Log	5.2
	Contents of the EJB Client Application Log	5.3
	Contents of the Trace based performance analysis	5.4
	Contents of the JavaVM Thread Dump	5.5
	Contents of the JavaVM Garbage Collection Log	5.6
	Contents of the JavaVM log (JavaVM log file)	5.7
	Contents of the Message Log Output by JavaVM (Standard Output and Error Report File)	5.8
	OS Status Information and Contents of the OS Log	5.9
	Contents of the JavaVM Stack Trace Information	5.10
	Contents of event log of Explicit Heap Memory Management functionality	5.11

For an overview of troubleshooting, output destinations and output methods of data, and settings related to the data acquisition and output, see the respective sections:

• Overview of troubleshooting and methods for automatic output of data
  2. Troubleshooting
  
• Settings related to data acquisition and output
  3. Preparing for Troubleshooting
  
• Default output destination of data and methods to output data separately
  4. Output Destinations and Output Methods of Data Required for Troubleshooting