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I am using Hibernate and getting Exception in thread "main" org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [#271] What is pretty weird about this error is, that the object with the given id exists in the database. I inserted the problematic record in another run of the application. If I access it in the same run (i.e. same hibernate session) there seem to be no problems retrieving the data. Just because it could be a fault of the mapping: public class ProblemClass implements Persistent { @ManyToOne(optional = false) private MyDbObject myDbObject; } public class MyDbObject implements Persistent { @OneToMany(mappedBy = "myDbObject") private List<ProblemClass> problemClasses; @ManyToOne(optional = false) private ThirdClass thirdClass; } I have absolutely no clue even where to look at. Any hints highly appreciated! Just to clarify: The data was inserted in another RUN of the application. It is definitely in the database, as I can see it via an SQL-Query after the application terminated. And after THAT, i.e. when starting the application again, I get the error in the FIRST query of the database -- no deletion, no rollback involved. Addition: Because it was asked, here is the code to fetch the data: public List<ProblemClass> getProblemClasses() { Query query = session.createQuery("from ProblemClass"); return query.list(); } And just to make it complete, here is the generic code to insert it (before fetching in another RUN of the application): public void save(Persistent persistent) { session.saveOrUpdate(persistent); }

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