In my project we use:-
@PersistenceContext(unitName="api-persistence-unit")
private EntityManager em;
but I am not aware about it's use.
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Nicolas Filotto
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Pankaj
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Does this answer your question? [What is Persistence Context?](https://stackoverflow.com/questions/19930152/what-is-persistence-context) – Nicolas Filotto Apr 05 '22 at 10:07