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• Through the log files that are stored in the <PRODUCT_HOME>/repository/logs folder. This folder contains current logs in a log file with a date stamp. Older logs are archived in the wso2carbon.log file.
• Through the command prompt/shell terminal that opens when you run the "wso2server.bat"/"wso2server.sh" files to start the Carbon server.   
• Through the advanced monitoring capabilities in WSO2 BAM. 
• Through the management console of your product.

Limiting the size of the wso2carbon.log file

You can limit the size of the <PRODUCT_HOME>/repository/logs/wso2carbon.log file by following the steps given below. This is useful if you want to archive the logs and get backups periodically.

1. Add org.apache.log4j.RollingFileAppender as the value of the log4j.appender.CARBON_LOGFILE property in the <PRODUCT_HOME>/repository/conf/log4j.properties file as follows.
   log4j.appender.CARBON_LOGFILE=org.apache.log4j.RollingFileAppender

2. Add the following two properties under RollingFileAppender.

   log4j.appender.CARBON_LOGFILE.MaxFileSize=10MB 
log4j.appender.CARBON_LOGFILE.MaxBackupIndex=20

   Info
   If the size of the log file is exceeding the value defined in the MaxFileSize property, then the content is copied to a backup file and the logs are continued to be added to a new empty log file. The MaxBackupIndex property makes the Log4j keep a given maximum number of backup files for the logs.