title: Logging from multiple apps/processes to a single log file
body: <p>Our app servers (weblogic) all use log4j to log to the same file on a network share.  On top of this we have all web apps in a managed server logging errors to a common error.log.  I can't imagine this is a good idea but wanted to hear from some pros.  I know that each web app has its own classloader, so any thread synchronization only occurs within the app.  So what happens when multiple processes start converging on a single log file?  Can we expect interspersed log statements?  Performance problems? What about multiple web apps logging to a common log file?  The environment is Solaris.</p>