Migrar geonetwork 2.6.4 a geonetwork 3.2.1

[Salomón]

Hola a todos,

Estoy intentado realizar la migración de GeoNetwork 2.6.4 a GeoNetwor 3.2.1, sin embargo, durante la actualización del esquema de base de datos, el cual, se encuentra en Oracle, se produce el siguiente error para cada uno de los metadatos existentes:

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2017-07-18 10:20:09,785 ERROR [geonetwork.datamanager] - The metadata document index with id=1938 is corrupt/invalid - ignoring it. Error: Could not read entity state from ResultSet : EntityKey[org.fao.geonet.domain.User#25]; nested exception is org.hibernate.exception.GenericJDBCException: Could not read entity state from ResultSet : EntityKey[org.fao.geonet.domain.User#25]
org.springframework.orm.jpa.JpaSystemException: Could not read entity state from ResultSet : EntityKey[org.fao.geonet.domain.User#25]; nested exception is org.hibernate.exception.GenericJDBCException: Could not read entity state from ResultSet : EntityKey[org.fao.geonet.domain.User#25]
        at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:314)
        at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:225)
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:417)
        at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
        at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
        at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.data.jpa.repository.support.LockModeRepositoryPostProcessor$LockModePopulatingMethodIntercceptor.invoke(LockModeRepositoryPostProcessor.java:92)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
        at com.sun.proxy.$Proxy198.findOne(Unknown Source)
        at org.fao.geonet.kernel.DataManager.indexMetadata(DataManager.java:663)
        at org.fao.geonet.kernel.IndexMetadataTask.run(IndexMetadataTask.java:114)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.exception.GenericJDBCException: Could not read entity state from ResultSet : EntityKey[org.fao.geonet.domain.User#25]
        at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
        at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.loadFromResultSet(EntityReferenceInitializerImpl.java:339)
        at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.hydrateEntityState(EntityReferenceInitializerImpl.java:251)
        at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:107)
        at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:255)
        at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:129)
        at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:138)
        at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:102)
        at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:186)
        at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4126)
        at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:503)
        at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:468)
        at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:213)
        at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:275)
        at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:151)
        at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1070)
        at org.hibernate.internal.SessionImpl.access$2000(SessionImpl.java:176)
        at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2551)
        at org.hibernate.internal.SessionImpl.get(SessionImpl.java:955)
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:1110)
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:1068)
        at sun.reflect.GeneratedMethodAccessor188.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:293)
        at com.sun.proxy.$Proxy122.find(Unknown Source)
        at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findOne(SimpleJpaRepository.java:212)
        at sun.reflect.GeneratedMethodAccessor187.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:344)
        at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:329)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
        ... 12 more
Caused by: java.sql.SQLException: Fallo al convertir a representación interna
        at oracle.jdbc.driver.CharCommonAccessor.getInt(CharCommonAccessor.java:123)
        at oracle.jdbc.driver.T4CVarcharAccessor.getInt(T4CVarcharAccessor.java:507)
        at oracle.jdbc.driver.GeneratedStatement.getInt(GeneratedStatement.java:217)
        at oracle.jdbc.driver.GeneratedScrollableResultSet.getInt(GeneratedScrollableResultSet.java:522)
        at oracle.jdbc.driver.GeneratedResultSet.getInt(GeneratedResultSet.java:1350)
        at org.apache.commons.dbcp.DelegatingResultSet.getInt(DelegatingResultSet.java:275)
        at org.apache.commons.dbcp.DelegatingResultSet.getInt(DelegatingResultSet.java:275)
        at org.apache.commons.dbcp.DelegatingResultSet.getInt(DelegatingResultSet.java:275)
        at org.hibernate.type.EnumType$OrdinalEnumValueMapper.getValue(EnumType.java:372)
        at org.hibernate.type.EnumType.nullSafeGet(EnumType.java:107)
        at org.hibernate.type.CustomType.nullSafeGet(CustomType.java:127)
        at org.hibernate.type.AbstractType.hydrate(AbstractType.java:106)
        at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2969)
        at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.loadFromResultSet(EntityReferenceInitializerImpl.java:324)
        ... 48 more
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Agradezco cualquier orientación que me puedan brindar para resolver este error.

Saludos.