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Forum
1

Mismatch client-server protocol prefix

during commit or flush and should indicate an attempt to persist a new entity object with a primary
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Need help to make this test work and define proper annotations for entities Lists

);             em.getTransaction().commit();             em.flush();              em.close
Issue
1

Negative snapshot user count exception

execution on a flushed transaction, i.e. there are uncommitted changes in the transaction
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1

Newbie : How to return the auto-generated ID

only after commit or flush and not after persist. If you need to have the id available earlier
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1

NullPointerException when using multithreading

of EntityManager.  After 500 persists, the thread calls a flush() on the database.  To my knowledge
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On initialisation of lists: impact on migration from EclipseLink to ObjectDB

HasListOfBlocks();     em.persist(h);     em.flush(h);//optional     Block childBlock = new Block
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OrphanRemoval not working?

. When saving the entity, I'm using merge and flush. The entity object is managed, so I think
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PersistenceException: Failed to locate field

, shouldn't it automatically flush it's caches if the schema evolves? or at least shouldn't
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1

Problem to use find method on an abstract Class: AbstractMethodError is thrown

().begin();         B b = new B();         em.persist(b);         em.flush();         Long id = b.id
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1

Problem with @Basic(fetch = FetchType.LAZY)

(); em.persist(sample); em.getTransaction().commit(); em.flush(); em