Sorry Leon but you are wrong. What Thomas looks for is common/lib, not server/lib according to http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html it's common/lib that is loaded in common classloader. server/lib is loaded in catalina classloader which is not visible for webapps.
To answer Thomas, yes, classes in common/lib get loaded only once in permgen. The problem of loading classes in common/lib is that they get shared. If some webapp call some static setter in JAF or JavaMail (to set a resolver of any kind) this one will be used by all running webapps. This can lead to curious bugs you might take a lot of time to solve. En l'instant précis du 24/04/07 10:42, Leon Rosenberg s'exprimait en ces termes: > i thinks its server/lib you are looking for (or common/endorsed) but > i'm not sure whether java mail has some static fields which will be > screwed by sharing them among all apps. > > leon > > > On 4/24/07, Thomas Papke <[EMAIL PROTECTED]> wrote: >> I need some help to the classloader concept of tomcat... (version 5.5.) >> >> Our Tomcat has about 60 webapps running - right now every webapps have >> in their Web/lib directory the libs for activation and java mail (among >> other libs). As I understand, right now this libs are 60times loaded >> into Permgen - if i will but them into the common/lib of tomcat - they >> are loaded only once info permgen? Any problem to share activation.jar >> and mail.jar inside common/lib for all webapps? >> >> Thanks a lot, >> >> Thomas >> >> --------------------------------------------------------------------- >> To start a new topic, e-mail: users@tomcat.apache.org >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
