The JBoss EAP Native Components for RHEL 5 ( EAP 5.1.2 ) appear to becontain broken links for JBoss Native to properly work. The instructions here: http://docs.redhat.com/docs/en-US/JBoss_Enterprise_Application_Platform/5.0/html/Installation_Guide/Installation.html indicate to simply extract the Native Components to the eap directory, however, in doing that I still get:

2010-09-28 14:00:31,635 DEBUG [org.apache.catalina.core.AprLifecycleListener] (main) The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /home/jboss/jboss-eap-5.1/native/lib/

The debug of org.apache.catalina.core.AprLifecycleListener shows:

Caused by: java.lang.UnsatisfiedLinkError: (Error on: /home/jboss/jboss-eap-5.1/native/lib/libtcnative-1.so)/home/jboss/jboss-eap-5.1/native/lib/libtcnative-1.so: /home/jboss/jboss-eap-5.1/native/lib/libapr-1.so.0: file too short, no libtcnative-1 in java.library.path (LibraryLoader.load()): Can't find:/home/jboss/jboss-eap-5.1_domain/STAN/STANDsrvweb/bin/native/libapr-1.so (/aplicaciones/netsrv/jboss-eap-5.1/native/lib)
at org.apache.tomcat.jni.Library.<init>(Library.java:78)
at org.apache.tomcat.jni.Library.initialize(Library.java:179)
... 129 more