openJPA enhancement error

<openjpa-2.1.1-r422266:1148538 nonfatal user error> org.apache.openjpa.persistence.ArgumentException: This configuration disallows runtime optimization, but the following listed types were not enhanced at build time or at class load time with a javaagent: "

com.wiloon.openjpa.entity.Animal”.

add line :

in persistence.xml