I am trying to configure hibernate orm mapping tool to my java class and using PostgreSQL as my database and configured the password as "password". When I tried to
You don't need hibernate-entitymanager-xxx.jar, because of you use a Hibernate session approach (not JPA). You need to close the SessionFactory too and rollback a transaction on errors. But, the problem, of course, is not with those.
This is returned by a database
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org.postgresql.util.PSQLException: FATAL: password authentication failed for user "sa"
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Looks like you've provided an incorrect username or (and) password.