Classloader howto
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Classloader Howto's
This document provides a quick how-to on managing the application server classloaders to include.
Tomcat
- Copy .class files to <tomcat_install_dir>/shared/classes
- Copy .jar files to <tomcat_install_dir>/shared/lib
A complete reference can be found in the Tomcat Docs.
Note: If loading libraries or classes that are jni wrappers (remedy jars, ambient joarse jars), the libraries the jars reference must be in the path.
- On linux and unix, the LD_LIBRARY_PATH must point to the location of the .so files
- On windows...
JBoss
The JBoss classloader is difficult to use because it uses a flat classloader.
Using Shared Libraries
You will need to do this if using both the mid-tier and SLM Data Collector applications on a single JBoss instance.
Update /path/to/jboss//server/default/deploy/jbossweb-tomcat55.sar/META-INF/jboss-service.xml so that JBoss uses the Tomcat classloader:
<attribute name="Java2ClassLoadingCompliance">false</attribute> <attribute name="UseJBossWebLoader">true</attribute>
You will then need to relocate the jni jar's to the shared lib path:
/path/to/jboss/server/default/lib
The files to relocate include:
- arapi70.jar
- arutil70.jar
References
http://jira.jboss.com/jira/browse/JBAS-1691
