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I've analyzed the debug output and that seems to indicate that the commit introducing additional quoting for reserved names is the core difference between the executions (one of the commits here). Any chance that the quoting doesn't get applied during the checks whether a schema upgrade is actually necessary? Ejb3ColumnName still has one instance of toDatabaseIdentifierText(…) which in another location has been replaced by applyGlobalQuoting(…) in different places. Could that be it?
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Possibly. Annotation binding (where Ejb3Column fits in) is an utter catastrophe. But given that the other report I looked at exhibited the same behavior and then did not when I used the proper Hibernate APIs for schema update, I don't really see how. That's what I am looking to ascertain here.