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Editorial Team
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Asked: 2026-06-10T05:45:41+00:00

What is the required configuration in log4j.properties file in order to backup log file

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What is the required configuration in log4j.properties file in order to backup log file in the end of each month (monthly rolling) and continue to have the same name for active log file?

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  1. Editorial Team

    So I found that DatePattern does the trick:

    log4j.appender.applog=org.apache.log4j.DailyRollingFileAppender
log4j.appender.applog.encoding=UTF-8
log4j.appender.applog.layout=org.apache.log4j.PatternLayout
log4j.appender.applog.layout.ConversionPattern=%d{yyyyMMdd HH:mm:ss} %m%n
log4j.appender.applog.File=log/process.log
log4j.appender.applog.DatePattern='.'yyyy-MM

    Here, name of the active log file is always “process.log” and at the beginning of each month the file is saved with the name “process.log.yyyy-MM” when the first log of that month is pushed to log4j and the active log file is reset.

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