Well, that makes sense and I have had no problems using the shared class loader. I guess I did something wrong when I tried to use the common class loader for my jni classes. I guess I am light years away from really knowing tomcat :)
--Luis R. On 4/24/07, David Smith <[EMAIL PROTECTED]> wrote:
My experience has been the reverse -- shared/lib is usually disabled and not working, common/lib is used most of the time. The difference between the two is common/lib is visible to both tomcat internals and the webapps. That's why we put the db drivers in there for container managed connection pooling. Shared/lib is only visible to the webapps -- tomcat internals can't see or access it. --David Luis Rivera wrote: > Hi, > > Just as a comment. I use the shared classloader by using the shared > folder > to avoid loading multiple times my shared libraries (for jni use). I > am not > sure what is the difference with the common/lib classloader, but it > did not > work when I used that one. > > --Luis R. > > On 4/24/07, David Delbecq <[EMAIL PROTECTED]> wrote: > >> >> 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] >> >> > --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
