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PersistenceException: Failed to locate field

> <enhancement agent = "false" reflection = "warning"/> <cache ref = "weak" level2 = "20m ... = "true" reflection = "warning"/>     <cache ref = "weak" level2 = "20m"/>     <fetch hollow = "true ... using reflection at com.objectdb.o._PersistenceException.b(_PersistenceException.java:45) at com

OEM Enhancer causing Jenkins job to freeze

.ensureClassInitialized(Native Method) at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:25)     Local Variable: class java.net.InetSocketAddress at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:122)     Local Variable: sun.reflect

Spring LTW Problem

(Class.java:264) at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114) at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125) at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) at sun.reflect

Database is erased after deploying a new web application version

.EventResource.(EventResource.java:28) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java

Upgrade to Java 8 won't run

) ObjectDB.em = em Exception in thread "main" java.lang.ExceptionInInitializerError at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke

InternalException using 2.3.7_12

.objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:716) at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.orm.jpa

References to objects of missing obsolete entity classes

.formalnotation.bl.internal.dmos.PhaseImpl is not enhanced (enhance the type or enable reflection ... or enable reflection) at com.objectdb.o.MSG.a(MSG.java:64) at com.objectdb.o.TYM.E ... workaround that you can try is to change the configuration file and allow reflection, or include


by the enhancer so that changes to persistent fields will be reflected in the data store


to persistent fields will be reflected in the data store. The context in which this call is made allows


Method javax.jdo.spi.PersistenceCapable PersistenceCapable jdoNewInstance( StateManager sm ) Return a new instance of this class, with the jdoStateManager set to the parameter, and jdoFlags set to LOAD_REQUIRED. This method is used as a performance optimization as an alternative to using reflection

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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