Sun Application Server 8 and Log4j
In ...\sun\ApplicationServer\domains\domain1\lib\ext, you will find log4j.jar . This, being the extension directory will place log4j.jar high up in the classloader hierarchy.
Suppose I have a 2 EARs to be deployed, each containing a WAR and a EJB JAR. All use log4j and naturally, each will have either log4j.properties or log4j.xml . Say only file logging is configured and all log to different file each.
Now the problem: since lib/ext/log4j.jar is always the one to be used, the first log4j.properties or log4j.xml to be used will rule over the rest and all logging across WARs and EJBJARs will be to the SAME file!
In sun-web.xml, can configure <class-loader> element to not to delegate to parent classloaders (havent tried it). But this does not solve the problem because there seems to be no way to configure likewise for EJBJAR! So even if can place log4j.jar in WEB-INF/lib for WAR and able to log to WAR-specified destinaton file, all the EJBJARs across all EARs will still be using lib/ext/log4j.jar and log to SAME file!
So I have removed lib/ext/log4j.jar . Am I missing out something here? Any insights?
Thanks.
