You can ignore almost all those warnings (a couple of them, i haven't seen before).
#1 can be ignored
#2 Tells you that the database server level isolation setting is REPEATABLE_READ, which you can override in the -ds.xml file
#3 Haven't seen before (or maybe never paid attention to that, i guess)
#4 Can be ignored
#5 That WARN message should never have been a WARN. All it is trying to say is that you have not configured the bean with a security-domain. The EJB spec doesn't mandate the security-domain, so i don't see a reason why it's a WARN message. In short, you can ignore it (or configure security-domain for the beans).