Thank you for your help "bstansberry(a)jboss.com" wrote : | | Can you tell me what all those special characters say? | I think this is broken Korean Message. I don't know how to config JBoss write to the log file in Korean correctly. please tell me if you know. "bstansberry(a)jboss.com" wrote : | Looks like it's a failure to close the server.log file for one day so it can roll over to the next day's version. But the other exceptions seem unrelated other than that they are IO related and occur around the same time. Do those non-log4j exceptions only occur at this time? yes, all those exceptions don't appear until the log4j exception occurs. After a failure to close the server.log, I get many EOF exceptions View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4203496#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...