Log file formatting options

You can customize your log4j formatted log files including file location, size, and number of back up files.

Use the log formatting options to modify and manage your log4j log files. To configure you log files you must edit the log.xml file located in the $TOP/etc/default directory.

Rolling File Appender parameters

Location of the log file

To change the location of a generated log file, change the File parameter of the specified log configuration file.

In this example, the file directory of the webserver_db.log is $TOP/logs.

<param name="File" value="$TOP/logs/webserver_db.log" />

Maximum size of the log file

The size of the log file can be set to a specified storage size before it starts to rotate and purge the files. To control when the file begins to truncate, change the maxFileSize parameter value.

In this example, the maximum file size is 10MB.

<param name="maxFileSize" value="10MB" />

Maximum number of log files to keep

The logger can be defined to keep a specified number of back ups for a log file. Once the maximum number is reached, the oldest file is deleted. To control the number of files you store, change the maxBackupIndex parameter value.

In this example, the maximum number of back up log files is 2.

<param name="maxBackupIndex" value="2" />