ContextNotActiveException on StartupEvent listener

[markeastman]

I have an application with the JPA enabled and I want to pre-populate the database prior to the web pages becoming active. I added an event listener and within the StartupEvent listener onStart(@observes StartupEvent event) I invoked EntityManager functions. The EntityManager has been Injected. At runtime the startup method is invoked but I get the following exception:
Caused by: javax.enterprise.context.ContextNotActiveException
at org.jboss.protean.arc.RequestContext.get(RequestContext.java:50)
at org.jboss.shamrock.jpa.runtime.TransactionEntityManagers_ClientProxy.delegate(Unknown Source)
at org.jboss.shamrock.jpa.runtime.TransactionEntityManagers_ClientProxy.getEntityManager(Unknown Source)
at org.jboss.shamrock.jpa.runtime.JPAResourceReferenceProvider$1.delegate(JPAResourceReferenceProvider.java:54)
at org.jboss.shamrock.jpa.runtime.entitymanager.ForwardingEntityManager.persist(ForwardingEntityManager.java:43)

I need a way to know that the application is ready, is a startup event that is involved after all the other framework mechanics have completed