JPA / Toplink Essentials / How to set Table Qualifier?

Hello!
How can i set a table qualifier for toplink essentials (JPA)?
Using toplink I can use setTableQualifier("...");
regards
Harald.

If I add orm.xml along to persistence.xml in the META-INF directly, TopLink JPA obviously finds it regarding to its log output:
Searching for default mapping file in file:/C:/<path_to_webapp>/WEB-INF/classes/
Found a default mapping file at file:/C:/<path_to_webapp>/WEB-INF/classes/META-INF/orm.xml for root URL file:/C:/<path_to_webapp>/WEB-INF/classes/
But it seems as the "schema" property I set under persistence-unit-defaults is ignored. The orm.xml file looks like this:
<persistence-unit-metadata>
     <persistence-unit-defaults>
          <schema>schema_name</schema>     
     </persistence-unit-defaults>
</persistence-unit-metadata>
The queries logged by TopLink JPA to not add qualifiy table names with the schema_name configured above!!!
Any idea?
Hans

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