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uPortal places libraries in CATALINA_BASE/shared/lib The default Tomcat 6.0 download does not enable libraries to be loaded from this directory. To resolve this you must edit CATALINA_BASE/conf/catalina.properties and change the line that begins "shared.loader=" to "the following:
shared.loader=${catalina.base}/shared/classes,${catalina.base}/shared/lib/*.jar
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Don't forget to restart tomcat after applying this change.
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