Multiple logs are output by Application Server. You reference the logs to identify the cause of a problem, and then take action.

This section describes the logs that are mainly used for troubleshooting and the processes that output the logs. The following figure shows the logs that are mainly used for troubleshooting and the processes that output the logs.

Figure 6-1 Processes that output logs

Four types of logs are mainly used for troubleshooting with Application Server. The following table describes each of the logs.

Table 6-8 Log types and output contents

Number in the figure	Log type	Output contents
1	Manager logs	Logs output by Management Server or Administration Agent. This type of log is output during the setup, operations, and maintenance by using the Cosminexus Manager functionality.
2	Server management command logs	This type of log is output during the server management command operations.
3	Web server logs	This type of log is output by Cosminexus HTTP Server.
4	J2EE server logs	This type of log is output by the J2EE server.

During troubleshooting, you check these logs and then take action. The following sections describe specific troubleshooting procedure for each tool used.