Hello,

I'd like to change Hibernate logging level to WARN.

As explained on this page, you have to change the Hibernate Log Category "org.hibernate" to "WARN". It works perfectly with log4j when I add "log4j.logger.org.hibernate=WARN" to log4j.properties file.
But when I change slf4j dependency to use logback instead of log4j and when I use the following logback.xml file, it doesn't work, I have Hibernate debug logs. Could you help me, please ?

<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</Pattern>
        </layout>
    </appender>

    <logger name="org.hibernate">
        <level value="WARN"/>
    </logger>

    <root level="DEBUG">
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>

Thanks.
Olivier