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Rollout log causes 'No output stream or file named'



Error found in server logs after configuring PegaRULES log files daily rolling in the prlogging.xml file.

Error Messages

log4j:ERROR No output stream or file set for the appender named [ALERT].

Steps to Reproduce

There are no specific use case to reproduce this issue.

Root Cause

In prlogging.xml file, the required File parameter is missing in the ALERT File Appender definition of class com.pega.apache.log4j.DailyRollingFileAppender.


This issue is resolved through the following local-change:

Edit the prlogging.xml file to provide the required parameters for the File Appender definition.

The usual structure of a DailyRollingFileAppender is as follow:

    <appender name="YOUR_APPENDER_NAME" class="com.pega.apache.log4j.DailyRollingFileAppender">
        <param name="DatePattern" value="'.'yyyy-MMM-dd"/>
        <param name="File" value="YOUR_LOG_PATH/YOUR_LOG_FILE_NAME"/>
        <layout class="com.pega.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="YOUR_CONVERSION_PATTERN" />

Please see the following PDN article for reference on the procedure to customize logs with the prlogging.xml file:

Published August 28, 2015 - Updated October 8, 2020

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