How about logging to a database... I believe someone had already written a JDBCAppender? Of course it will influence the performance of your system but I think there will always be a performance penalty to if you want to sychronize logging.. Geert -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Yes Jin, I hope so. That's what my question. You know if it is across different JVMs in distributed applications like EJBs, Servlets and two EJB instances of same type from different process try to log to a same file, what will happen. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]