This chapter gives an overview of the acquisition and the handling of data for troubleshooting.

If a failure occurs in the running system, it is necessary to collect the data for analysis purpose based on the type of the error that has occurred. The application server provides a function that outputs the log that can be used as data for maintaining the system.

The following table describes the organization of this chapter.

Table 2-1 Organization of this chapter (Troubleshooting (overview of data acquisition and handling))

Category	Title	Reference
Explanation	Overview of troubleshooting	2.2
	Acquiring the Data	2.3
	Types of Required Data	2.4
Operation	Troubleshooting and Recovery	2.5
Notes	Precautions Related to Troubleshooting	2.6

For details about the data acquisition and output settings for troubleshooting, methods to output the data individually, the output destination and contents of the data, and the troubleshooting procedure, reference the following respective chapters:

• Settings related to data acquisition and output
  3. Preparing for Troubleshooting
  
• Default output destination of data and methods to output data individually
  4. Output Destinations and Output Methods of Data Required for Troubleshooting
  
• Data Output Contents
  5. Problem Analysis
  
• Troubleshooting Procedure
  6. Troubleshooting Procedure