Unit Test raises : HsqlException user lacks privilege or object not found: ROWNUM

Question

I\'ve got an issue with Hibernate when executing my unit tests, here is the issue I get :

org.springframework.dao.InvalidDataAccessResourceUsageException: 
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Answer 1

You are using HSQLDB for unit tests and Oracle in production.

To run HSQLDB with the Oracle dialect you must first enable Oracle syntax compatibility mode on HSQLDB:

SET DATABASE SQL SYNTAX ORA TRUE;

The runtime error was most likely produced by a limit imposed on the result size of query. In Oracle this is implemented by using the pseudocolumn ROWNUM. HSQLDB understands ROWNUM only in compatibility mode.