Hi, Recently we have upgraded our application from log4j to logback. we were successful to retain the existing functionality and added the unique features of logback. But... As our application is deployed in weblogic. it has thread-pool concept .. Due to this, we see that, when existing threads are being used for some operation, malicious data has been logged. we were tried to unset the MDC values explicitly by identifying the end point of application, still for some invocation, it became difficult to clear the MDC values.. Is there any way to clear the MDC values once the operation is completed? we have seen the below link,but not sure, whether it solves our issue or not.. http://jira.qos.ch/browse/LOGBACK-422 Any help is much appreciated. Regards, Govardhana Reddy -- View this message in context: http://logback.10977.n7.nabble.com/How-to-clear-MDC-values-for-specific-thre... Sent from the Users mailing list archive at Nabble.com.