I corrected the upstream Hibernate jira in the title to HHH-9387, since HHH-9280 was reverted due to a regression.
Pasting comments made by Jan Martiska for 1157597 that apply to this BZ as well: "Partially fixed in Hibernate 4.2.14.SP4-redhat-1 (EAP 6.3.2.CR2). 'Partially' means using Hibernate API directly, not using Entity Manager." "Note that there is configuration.setNamingStrategyDelegator(ImprovedNamingStrategyDelegator.DEFAULT_INSTANCE) needed in order to activate the fix." "BZ for Entity Manager fix https://bugzilla.redhat.com/show_bug.cgi?id=1158502"
verified EAP 6.3.2.CP.CR2