The war installer for using openejb in Tomcat installs the java agent into CATALINA_HOME/lib.
Then it patches catalina.sh and catalina.bat to add a -javaagent parameter during startup. That code erroneously assumes the agent was installed into CATALINA_BASE (instead of CATALINA_HOME). If both are the same that's fine, if not, it breaks.
I attach the simple patch.
Note: Installing into CATALINA_BASE might actually be nicer, but CATALINA_BASE/lib is not on the default search path of the Tomcat loaders, so one would also have to patch common.loader in CATALINA_BASE/conf/catalina.properties.