THANK YOU! Changing the hibernate release version worked.
1) I ran into an issue with a Hibernate-generated Oracle SQL query in which the table alias in the FROM clause was being prefixed, incorrectly, with AS.
2) This was reverified by running the SQL query on SQL+ both with (didn't work) and without (worked) the keyword AS.
3) The problem seems to be with version 6.0.0.Alpha4. Changing that dependency to <version>5.4.12.Final</version> worked.