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Logging

Logging in Nuclos with log4j2 – SQL, exception and JMS logging at a glance.

KONZEPT ADMINISTRATOR UPDATED: JUL 2026 APPLIES TO NUCLOS 4.2026.X

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Nuclos logs via log4j2 (file conf/log4j2.xml, older versions conf/log4j.properties). Here is an overview of the logging topics.

Installer-safe configuration

Changes to conf/log4j2.xml are overwritten by the installer. Also place the file under extensions/conf so your configuration is preserved.

Topics

SQL.

Exceptions.