As I understand, writting to file is the task of Appenders, which is synchronized. However, when crossing JVM, there still might be problems. Is this correct ? Jin >> Hi guys, we are creating category object with the static method getInstance(). I have a question for you guys. Is Category object is singleton. If so how can I use for logging across mulitiple processes if it is singleton. If use across multiple processes or JVMs it may try to write in to log file same time and there is no synchronization available. Am I correct . Please clarify me guys. Thankyou kanagavisu >> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]