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Cannot initialize db after inserting a java.util.List

cannot be cast to com.objectdb.spi.TrackableSysType This happens during EntityManagerFactory
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Cascading merge() leading to "Attempt to persist a reference to a non managed instance" error

go() {     EntityManagerFactory emf = Persistence.createEntityManagerFactory("objectdb:test.tmp;drop
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ClassCastException on SELECT NEW ... after UPDATE over Java RMI

)  {         EntityManagerFactory emf = Persistence.createEntityManagerFactory(                 "C:\\trvr-bad.odb
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ClassCastException: cannot be cast to com.objectdb.spi.TrackableUserType

the PersistenceManagerFactory (or EntityManagerFactory), otherwise the database remains open (e.g. for maintaining
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com.objectdb.o.InternalException: Unexpected internal exception

the EntityManagerFactory. Please try build 2.6.8_02 that should fix this issue. junior
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Conflicting modifiers .... (javax.persistence.Id, javax.persistence.ManyToOne)

.EntityManagerFactory emf = javax.persistence.Persistence.createEntityManagerFactory("TestObjPU
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connect with server

.odb", properties);   em = emf.createEntityManager();" where emf is my EntityManagerFactory & em
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Connecting to a remote objectdb server

{             EntityManagerFactory emf =             Persistence.createEntityManagerFactory
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Connections pool

Hi! Does ObjectDB keeps and reuses a pool of connections as MySQL JDBC driver does? I mean when it's used in a container like Tomcat, Glassfish, JBoss etc. Thank you. Yes. Every EntityManagerFactory instance manages a pool of connections and reuses them when it creates new EntityManager instances
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coonection pooling

, EntityManagerFactory would be responsible for this operation. Thanks. This is something that should be managed