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h1. Application log

Logging of LOGalyze Engine can be configured in _$\{LOGALYZE_HOME}/conf/log4j.conf_.

You can find the application log of LOGalyze Engine in _$\{LOGALYZE_HOME}/logs/engine.log_ file and in _$\{LOGALYZE_HOME}/logs/logalyze.out_ file.

Logging of web application can be configure in _$\{LOGALYZE_HOME}/conf/admin/webapps/ROOT/WEB-INF/classes/logging.properties_.

You can find the web application log in _$\{LOGALYZE_HOME}/conf/admin/logs_.

h1. Common error messages

*Log message:*

java.sql.SQLException: Another instance of Derby may have already booted the database

Embedded Apache Derby database is open or locked. Check if another instance of the Engine is running, or the database instance was not properly unlocked during shutdown.