http://git-wip-us.apache.org/repos/asf/ignite/blob/d9bd387e/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheSelfTest.java
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diff --git 
a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheSelfTest.java
 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheSelfTest.java
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+++ 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheSelfTest.java
@@ -0,0 +1,1997 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.cache.hibernate;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Callable;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToMany;
+import javax.persistence.OneToOne;
+import javax.persistence.OptimisticLockException;
+import javax.persistence.PersistenceException;
+import javax.persistence.SharedCacheMode;
+import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.apache.ignite.internal.IgniteKernal;
+import org.apache.ignite.internal.processors.cache.IgniteCacheProxy;
+import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
+import org.apache.ignite.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder;
+import org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder;
+import org.apache.ignite.testframework.GridTestUtils;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+import org.hibernate.ObjectNotFoundException;
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.Transaction;
+import org.hibernate.annotations.NaturalId;
+import org.hibernate.annotations.NaturalIdCache;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistry;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.cache.spi.access.AccessType;
+import org.hibernate.exception.ConstraintViolationException;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.mapping.RootClass;
+import org.hibernate.query.Query;
+import org.hibernate.stat.CacheRegionStatistics;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import static org.apache.ignite.cache.CacheAtomicityMode.ATOMIC;
+import static org.apache.ignite.cache.CacheAtomicityMode.TRANSACTIONAL;
+import static org.apache.ignite.cache.CacheMode.PARTITIONED;
+import static org.apache.ignite.cache.CacheWriteSynchronizationMode.FULL_SYNC;
+import static 
org.apache.ignite.cache.hibernate.HibernateAccessStrategyFactory.DFLT_ACCESS_TYPE_PROPERTY;
+import static 
org.apache.ignite.cache.hibernate.HibernateAccessStrategyFactory.IGNITE_INSTANCE_NAME_PROPERTY;
+import static 
org.apache.ignite.cache.hibernate.HibernateAccessStrategyFactory.REGION_CACHE_PROPERTY;
+import static 
org.hibernate.cache.spi.RegionFactory.DEFAULT_QUERY_RESULTS_REGION_UNQUALIFIED_NAME;
+import static 
org.hibernate.cache.spi.RegionFactory.DEFAULT_UPDATE_TIMESTAMPS_REGION_UNQUALIFIED_NAME;
+import static org.hibernate.cfg.AvailableSettings.JPA_SHARED_CACHE_MODE;
+import static org.hibernate.cfg.Environment.CACHE_REGION_FACTORY;
+import static org.hibernate.cfg.Environment.GENERATE_STATISTICS;
+import static org.hibernate.cfg.Environment.HBM2DDL_AUTO;
+import static org.hibernate.cfg.Environment.RELEASE_CONNECTIONS;
+import static org.hibernate.cfg.Environment.USE_QUERY_CACHE;
+import static org.hibernate.cfg.Environment.USE_SECOND_LEVEL_CACHE;
+
+/**
+ *
+ * Tests Hibernate L2 cache.
+ */
+@RunWith(JUnit4.class)
+public class HibernateL2CacheSelfTest extends GridCommonAbstractTest {
+    /** */
+    private static final TcpDiscoveryIpFinder IP_FINDER = new 
TcpDiscoveryVmIpFinder(true);
+
+    /** */
+    public static final String CONNECTION_URL = 
"jdbc:h2:mem:example;DB_CLOSE_DELAY=-1";
+
+    /** */
+    public static final String ENTITY_NAME = Entity.class.getName();
+
+    /** */
+    public static final String ENTITY2_NAME = Entity2.class.getName();
+
+    /** */
+    public static final String VERSIONED_ENTITY_NAME = 
VersionedEntity.class.getName();
+
+    /** */
+    public static final String CHILD_ENTITY_NAME = ChildEntity.class.getName();
+
+    /** */
+    public static final String PARENT_ENTITY_NAME = 
ParentEntity.class.getName();
+
+    /** */
+    public static final String CHILD_COLLECTION_REGION = ENTITY_NAME + 
".children";
+
+    /** */
+    public static final String NATURAL_ID_REGION =
+        
"org.apache.ignite.cache.hibernate.HibernateL2CacheSelfTest$Entity##NaturalId";
+
+    /** */
+    public static final String NATURAL_ID_REGION2 =
+        
"org.apache.ignite.cache.hibernate.HibernateL2CacheSelfTest$Entity2##NaturalId";
+
+    /** */
+    private SessionFactory sesFactory1;
+
+    /** */
+    private SessionFactory sesFactory2;
+
+    /**
+     * First Hibernate test entity.
+     */
+    @javax.persistence.Entity
+    @NaturalIdCache
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    public static class Entity {
+        /** */
+        private int id;
+
+        /** */
+        private String name;
+
+        /** */
+        private Collection<ChildEntity> children;
+
+        /**
+         * Default constructor required by Hibernate.
+         */
+        public Entity() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param name Name.
+         */
+        public Entity(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Name.
+         */
+        @NaturalId(mutable = true)
+        public String getName() {
+            return name;
+        }
+
+        /**
+         * @param name Name.
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+
+        /**
+         * @return Children.
+         */
+        @OneToMany(cascade=javax.persistence.CascadeType.ALL, 
fetch=FetchType.LAZY)
+        @JoinColumn(name="ENTITY_ID")
+        public Collection<ChildEntity> getChildren() {
+            return children;
+        }
+
+        /**
+         * @param children Children.
+         */
+        public void setChildren(Collection<ChildEntity> children) {
+            this.children = children;
+        }
+    }
+
+    /**
+     * Second Hibernate test entity.
+     */
+    @javax.persistence.Entity
+    @NaturalIdCache
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    public static class Entity2 {
+        /** */
+        private int id;
+
+        /** */
+        private String name;
+
+        /** */
+        private Collection<ChildEntity> children;
+
+        /**
+         * Default constructor required by Hibernate.
+         */
+        public Entity2() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param name Name.
+         */
+        public Entity2(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Name.
+         */
+        @NaturalId(mutable = true)
+        public String getName() {
+            return name;
+        }
+
+        /**
+         * @param name Name.
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+    }
+
+    /**
+     * Hibernate child entity referenced by {@link Entity}.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings("PublicInnerClass")
+    public static class ChildEntity {
+        /** */
+        private int id;
+
+        /**
+         * Default constructor required by Hibernate.
+         */
+        public ChildEntity() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         */
+        public ChildEntity(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        @GeneratedValue
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+    }
+
+    /**
+     * Hibernate entity referencing {@link Entity}.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings("PublicInnerClass")
+    public static class ParentEntity {
+        /** */
+        private int id;
+
+        /** */
+        private Entity entity;
+
+        /**
+         * Default constructor required by Hibernate.
+         */
+        public ParentEntity() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param entity Referenced entity.
+         */
+        public ParentEntity(int id, Entity entity) {
+            this.id = id;
+            this.entity = entity;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Referenced entity.
+         */
+        @OneToOne
+        public Entity getEntity() {
+            return entity;
+        }
+
+        /**
+         * @param entity Referenced entity.
+         */
+        public void setEntity(Entity entity) {
+            this.entity = entity;
+        }
+    }
+
+    /**
+     * Hibernate entity.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    public static class VersionedEntity {
+        /** */
+        private int id;
+
+        /** */
+        private long ver;
+
+        /**
+         * Default constructor required by Hibernate.
+         */
+        public VersionedEntity() {
+        }
+
+        /**
+         * @param id ID.
+         */
+        public VersionedEntity(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Version.
+         */
+        @javax.persistence.Version
+        public long getVersion() {
+            return ver;
+        }
+
+        /**
+         * @param ver Version.
+         */
+        public void setVersion(long ver) {
+            this.ver = ver;
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override protected IgniteConfiguration getConfiguration(String 
igniteInstanceName) throws Exception {
+        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
+
+        TcpDiscoverySpi discoSpi = new TcpDiscoverySpi();
+
+        discoSpi.setIpFinder(IP_FINDER);
+
+        cfg.setDiscoverySpi(discoSpi);
+
+        
cfg.setCacheConfiguration(generalRegionConfiguration(DEFAULT_UPDATE_TIMESTAMPS_REGION_UNQUALIFIED_NAME),
+            
generalRegionConfiguration(DEFAULT_QUERY_RESULTS_REGION_UNQUALIFIED_NAME),
+            transactionalRegionConfiguration(ENTITY_NAME),
+            transactionalRegionConfiguration(ENTITY2_NAME),
+            transactionalRegionConfiguration(VERSIONED_ENTITY_NAME),
+            transactionalRegionConfiguration(PARENT_ENTITY_NAME),
+            transactionalRegionConfiguration(CHILD_ENTITY_NAME),
+            transactionalRegionConfiguration(CHILD_COLLECTION_REGION),
+            transactionalRegionConfiguration(NATURAL_ID_REGION),
+            transactionalRegionConfiguration(NATURAL_ID_REGION2));
+
+        return cfg;
+    }
+
+    /**
+     * @param regionName Region name.
+     * @return Cache configuration for {@link IgniteGeneralDataRegion}.
+     */
+    private CacheConfiguration generalRegionConfiguration(String regionName) {
+        CacheConfiguration cfg = new CacheConfiguration();
+
+        cfg.setName(regionName);
+
+        cfg.setCacheMode(PARTITIONED);
+
+        cfg.setAtomicityMode(ATOMIC);
+
+        cfg.setWriteSynchronizationMode(FULL_SYNC);
+
+        cfg.setBackups(1);
+
+        cfg.setStatisticsEnabled(true);
+
+        //cfg.setAffinity(new RendezvousAffinityFunction(false, 10));
+
+        return cfg;
+    }
+
+    /**
+     * @param regionName Region name.
+     * @return Transactional Cache configuration
+     */
+    protected CacheConfiguration transactionalRegionConfiguration(String 
regionName) {
+        CacheConfiguration cfg = new CacheConfiguration();
+
+        cfg.setName(regionName);
+
+        cfg.setCacheMode(PARTITIONED);
+
+        cfg.setAtomicityMode(TRANSACTIONAL);
+
+        cfg.setWriteSynchronizationMode(FULL_SYNC);
+
+        cfg.setBackups(1);
+
+        cfg.setStatisticsEnabled(true);
+
+        cfg.setAffinity(new RendezvousAffinityFunction(false, 10));
+
+        return cfg;
+    }
+
+    /**
+     * @return Hibernate registry builder.
+     */
+    protected StandardServiceRegistryBuilder registryBuilder() {
+        StandardServiceRegistryBuilder builder = new 
StandardServiceRegistryBuilder();
+
+        builder.applySetting("hibernate.connection.url", CONNECTION_URL);
+
+        return builder;
+    }
+
+    /** {@inheritDoc} */
+    @BeforeClass
+    @Override protected void beforeTestsStarted() throws Exception {
+        startGrids(2);
+    }
+
+    /** {@inheritDoc} */
+    @AfterClass
+    @Override protected void afterTestsStopped() throws Exception {
+        stopAllGrids();
+    }
+
+    /** {@inheritDoc} */
+    @After
+    @Override protected void afterTest() throws Exception {
+        cleanup();
+    }
+
+    /**
+     * @return Hibernate L2 cache access types to test.
+     */
+    protected AccessType[] accessTypes() {
+        return new AccessType[]{AccessType.READ_ONLY, 
AccessType.NONSTRICT_READ_WRITE, AccessType.READ_WRITE};
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testCollectionCache() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testCollectionCache(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    @SuppressWarnings("unchecked")
+    private void testCollectionCache(AccessType accessType) throws Exception {
+        createSessionFactories(accessType);
+
+        Map<Integer, Integer> idToChildCnt = new HashMap<>();
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < 3; i++) {
+                    Entity e = new Entity(i, "name-" + i);
+
+                    Collection<ChildEntity> children = new ArrayList<>();
+
+                    for (int j = 0; j < 3; j++)
+                        children.add(new ChildEntity());
+
+                    e.setChildren(children);
+
+                    idToChildCnt.put(e.getId(), e.getChildren().size());
+
+                    ses.save(e);
+                }
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            // Load children, this should populate cache.
+
+            ses = sesFactory1.openSession();
+
+            try {
+                List<Entity> list = ses.createCriteria(ENTITY_NAME).list();
+
+                assertEquals(idToChildCnt.size(), list.size());
+
+                for (Entity e : list)
+                    assertEquals((int) idToChildCnt.get(e.getId()), 
e.getChildren().size());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertCollectionCache(sesFactory2, idToChildCnt, 3, 0);
+            assertCollectionCache(sesFactory1, idToChildCnt, 3, 0);
+
+            if (accessType == AccessType.READ_ONLY)
+                return;
+
+            // Update children for one entity.
+
+            ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                e1.getChildren().remove(e1.getChildren().iterator().next());
+
+                ses.update(e1);
+
+                idToChildCnt.put(e1.getId(), e1.getChildren().size());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertCollectionCache(sesFactory2, idToChildCnt, 2, 1); // After 
update collection cache entry is removed.
+            assertCollectionCache(sesFactory1, idToChildCnt, 3, 0); // 
'assertCollectionCache' loads children in cache.
+
+            // Update children for the same entity using another 
SessionFactory.
+
+            ses = sesFactory2.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                e1.getChildren().remove(e1.getChildren().iterator().next());
+
+                ses.update(e1);
+
+                idToChildCnt.put(e1.getId(), e1.getChildren().size());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertCollectionCache(sesFactory2, idToChildCnt, 2, 1); // After 
update collection cache entry is removed.
+            assertCollectionCache(sesFactory1, idToChildCnt, 3, 0); // 
'assertCollectionCache' loads children in cache.
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testEntityCache() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testEntityCache(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testEntityCache(AccessType accessType) throws Exception {
+        createSessionFactories(accessType);
+
+        Map<Integer, String> idToName = new HashMap<>();
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < 2; i++) {
+                    String name = "name-" + i;
+
+                    ses.save(new Entity(i, name));
+
+                    idToName.put(i, name);
+                }
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName, 100);
+
+            if (accessType == AccessType.READ_ONLY)
+                return;
+
+            ses = sesFactory1.openSession();
+
+            try {
+                // Updates and inserts in single transaction.
+
+                Transaction tx = ses.beginTransaction();
+
+                Entity e0 = (Entity)ses.load(Entity.class, 0);
+
+                e0.setName("name-0-changed1");
+
+                ses.update(e0);
+
+                idToName.put(0, e0.getName());
+
+                ses.save(new Entity(2, "name-2"));
+
+                idToName.put(2, "name-2");
+
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                e1.setName("name-1-changed1");
+
+                ses.update(e1);
+
+                idToName.put(1, e1.getName());
+
+                ses.save(new Entity(3, "name-3"));
+
+                idToName.put(3, "name-3");
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName);
+
+            ses = sesFactory1.openSession();
+
+            try {
+                // Updates, inserts and deletes in single transaction.
+
+                Transaction tx = ses.beginTransaction();
+
+                ses.save(new Entity(4, "name-4"));
+
+                idToName.put(4, "name-4");
+
+                Entity e0 = (Entity)ses.load(Entity.class, 0);
+
+                e0.setName("name-0-changed2");
+
+                ses.update(e0);
+
+                idToName.put(e0.getId(), e0.getName());
+
+                ses.delete(ses.load(Entity.class, 1));
+
+                idToName.remove(1);
+
+                Entity e2 = (Entity)ses.load(Entity.class, 2);
+
+                e2.setName("name-2-changed1");
+
+                ses.update(e2);
+
+                idToName.put(e2.getId(), e2.getName());
+
+                ses.delete(ses.load(Entity.class, 3));
+
+                idToName.remove(3);
+
+                ses.save(new Entity(5, "name-5"));
+
+                idToName.put(5, "name-5");
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName, 1, 3);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName, 1, 3);
+
+            // Try to update the same entity using another SessionFactory.
+
+            ses = sesFactory2.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity e0 = (Entity)ses.load(Entity.class, 0);
+
+                e0.setName("name-0-changed3");
+
+                ses.update(e0);
+
+                idToName.put(e0.getId(), e0.getName());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName);
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testTwoEntitiesSameCache() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testTwoEntitiesSameCache(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testTwoEntitiesSameCache(AccessType accessType) throws 
Exception {
+        createSessionFactories(accessType);
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            Map<Integer, String> idToName1 = new HashMap<>();
+            Map<Integer, String> idToName2 = new HashMap<>();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < 2; i++) {
+                    String name = "name-" + i;
+
+                    ses.save(new Entity(i, name));
+                    ses.save(new Entity2(i, name));
+
+                    idToName1.put(i, name);
+                    idToName2.put(i, name);
+                }
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName1, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName1, 100);
+
+            assertEntityCache(ENTITY2_NAME, sesFactory2, idToName2, 100);
+            assertEntityCache(ENTITY2_NAME, sesFactory1, idToName2, 100);
+
+            if (accessType == AccessType.READ_ONLY)
+                return;
+
+            ses = sesFactory1.openSession();
+
+            try {
+                // Updates both entities in single transaction.
+
+                Transaction tx = ses.beginTransaction();
+
+                Entity e = (Entity)ses.load(Entity.class, 0);
+
+                e.setName("name-0-changed1");
+
+                ses.update(e);
+
+                Entity2 e2 = (Entity2)ses.load(Entity2.class, 0);
+
+                e2.setName("name-e2-0-changed1");
+
+                ses.update(e2);
+
+                idToName1.put(0, e.getName());
+                idToName2.put(0, e2.getName());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName1, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName1, 100);
+
+            assertEntityCache(ENTITY2_NAME, sesFactory2, idToName2, 100);
+            assertEntityCache(ENTITY2_NAME, sesFactory1, idToName2, 100);
+
+            ses = sesFactory1.openSession();
+
+            try {
+                // Remove entity1 and insert entity2 in single transaction.
+
+                Transaction tx = ses.beginTransaction();
+
+                Entity e = (Entity)ses.load(Entity.class, 0);
+
+                ses.delete(e);
+
+                Entity2 e2 = new Entity2(2, "name-2");
+
+                ses.save(e2);
+
+                idToName1.remove(0);
+                idToName2.put(2, e2.getName());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName1, 0, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName1, 0, 100);
+
+            assertEntityCache(ENTITY2_NAME, sesFactory2, idToName2, 100);
+            assertEntityCache(ENTITY2_NAME, sesFactory1, idToName2, 100);
+
+            ses = sesFactory1.openSession();
+
+            Transaction tx = ses.beginTransaction();
+
+            try {
+                // Update, remove, insert in single transaction, transaction 
fails.
+
+                Entity e = (Entity)ses.load(Entity.class, 1);
+
+                e.setName("name-1-changed1");
+
+                ses.update(e); // Valid update.
+
+                ses.save(new Entity(2, "name-2")); // Valid insert.
+
+                ses.delete(ses.load(Entity2.class, 0)); // Valid delete.
+
+                Entity2 e2 = (Entity2)ses.load(Entity2.class, 1);
+
+                e2.setName("name-2");  // Invalid update, not-unique name.
+
+                ses.update(e2);
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (PersistenceException e) {
+                assertEquals(ConstraintViolationException.class, 
e.getCause().getClass());
+                log.info("Expected exception: " + e);
+
+                tx.rollback();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName1, 0, 2, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName1, 0, 2, 100);
+
+            assertEntityCache(ENTITY2_NAME, sesFactory2, idToName2, 100);
+            assertEntityCache(ENTITY2_NAME, sesFactory1, idToName2, 100);
+
+            ses = sesFactory2.openSession();
+
+            try {
+                // Update, remove, insert in single transaction.
+
+                tx = ses.beginTransaction();
+
+                Entity e = (Entity)ses.load(Entity.class, 1);
+
+                e.setName("name-1-changed1");
+
+                ses.update(e);
+
+                idToName1.put(1, e.getName());
+
+                ses.save(new Entity(2, "name-2"));
+
+                idToName1.put(2, "name-2");
+
+                ses.delete(ses.load(Entity2.class, 0));
+
+                idToName2.remove(0);
+
+                Entity2 e2 = (Entity2)ses.load(Entity2.class, 1);
+
+                e2.setName("name-e2-2-changed");
+
+                ses.update(e2);
+
+                idToName2.put(1, e2.getName());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName1, 0, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName1, 0, 100);
+
+            assertEntityCache(ENTITY2_NAME, sesFactory2, idToName2, 0, 100);
+            assertEntityCache(ENTITY2_NAME, sesFactory1, idToName2, 0, 100);
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testVersionedEntity() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testVersionedEntity(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testVersionedEntity(AccessType accessType) throws Exception {
+        createSessionFactories(accessType);
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            VersionedEntity e0 = new VersionedEntity(0);
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                ses.save(e0);
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            ses = sesFactory1.openSession();
+
+            long ver;
+
+            try {
+                ver = ((VersionedEntity)ses.load(VersionedEntity.class, 
0)).getVersion();
+            }
+            finally {
+                ses.close();
+            }
+
+            CacheRegionStatistics stats1 =
+                
sesFactory1.getStatistics().getCacheRegionStatistics(VERSIONED_ENTITY_NAME);
+            CacheRegionStatistics stats2 =
+                
sesFactory2.getStatistics().getCacheRegionStatistics(VERSIONED_ENTITY_NAME);
+
+            assertEquals(1, stats1.getElementCountInMemory());
+            assertEquals(1, stats2.getElementCountInMemory());
+
+            ses = sesFactory2.openSession();
+
+            try {
+                assertEquals(ver, 
((VersionedEntity)ses.load(VersionedEntity.class, 0)).getVersion());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(1, stats2.getElementCountInMemory());
+            assertEquals(1, stats2.getHitCount());
+
+            if (accessType == AccessType.READ_ONLY)
+                return;
+
+            e0.setVersion(ver - 1);
+
+            ses = sesFactory1.openSession();
+
+            Transaction tx = ses.beginTransaction();
+
+            try {
+                ses.update(e0);
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (OptimisticLockException e) {
+                log.info("Expected exception: " + e);
+            }
+            finally {
+                tx.rollback();
+
+                ses.close();
+            }
+
+            sesFactory1.getStatistics().clear();
+
+            stats1 = 
sesFactory1.getStatistics().getCacheRegionStatistics(VERSIONED_ENTITY_NAME);
+
+            ses = sesFactory1.openSession();
+
+            try {
+                assertEquals(ver, 
((VersionedEntity)ses.load(VersionedEntity.class, 0)).getVersion());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(1, stats1.getElementCountInMemory());
+            assertEquals(1, stats1.getHitCount());
+            assertEquals(1, stats2.getElementCountInMemory());
+            assertEquals(1, stats2.getHitCount());
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testNaturalIdCache() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testNaturalIdCache(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testNaturalIdCache(AccessType accessType) throws Exception {
+        createSessionFactories(accessType);
+
+        Map<String, Integer> nameToId = new HashMap<>();
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < 3; i++) {
+                    String name = "name-" + i;
+
+                    ses.save(new Entity(i, name));
+
+                    nameToId.put(name, i);
+                }
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            ses = sesFactory1.openSession();
+
+            try {
+                for (Map.Entry<String, Integer> e : nameToId.entrySet())
+                    ((Entity) 
ses.bySimpleNaturalId(Entity.class).load(e.getKey())).getId();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertNaturalIdCache(sesFactory2, nameToId, "name-100");
+            assertNaturalIdCache(sesFactory1, nameToId, "name-100");
+
+            if (accessType == AccessType.READ_ONLY)
+                return;
+
+            // Update naturalId.
+
+            ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                nameToId.remove(e1.getName());
+
+                e1.setName("name-1-changed1");
+
+                nameToId.put(e1.getName(), e1.getId());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertNaturalIdCache(sesFactory2, nameToId, "name-1");
+            assertNaturalIdCache(sesFactory1, nameToId, "name-1");
+
+            // Update entity using another SessionFactory.
+
+            ses = sesFactory2.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                nameToId.remove(e1.getName());
+
+                e1.setName("name-1-changed2");
+
+                nameToId.put(e1.getName(), e1.getId());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertNaturalIdCache(sesFactory2, nameToId, "name-1-changed1");
+            assertNaturalIdCache(sesFactory1, nameToId, "name-1-changed1");
+
+            // Try invalid NaturalId update.
+
+            ses = sesFactory1.openSession();
+
+            Transaction tx = ses.beginTransaction();
+
+            try {
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                e1.setName("name-0"); // Invalid update (duplicated name).
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (PersistenceException e) {
+                assertEquals(ConstraintViolationException.class, 
e.getCause().getClass());
+                log.info("Expected exception: " + e);
+
+                tx.rollback();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertNaturalIdCache(sesFactory2, nameToId);
+            assertNaturalIdCache(sesFactory1, nameToId);
+
+            // Delete entity.
+
+            ses = sesFactory2.openSession();
+
+            try {
+                tx = ses.beginTransaction();
+
+                Entity e2 = (Entity)ses.load(Entity.class, 2);
+
+                ses.delete(e2);
+
+                nameToId.remove(e2.getName());
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertNaturalIdCache(sesFactory2, nameToId, "name-2");
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testEntityCacheTransactionFails() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testEntityCacheTransactionFails(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testEntityCacheTransactionFails(AccessType accessType) throws 
Exception {
+        createSessionFactories(accessType);
+
+        Map<Integer, String> idToName = new HashMap<>();
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < 3; i++) {
+                    String name = "name-" + i;
+
+                    ses.save(new Entity(i, name));
+
+                    idToName.put(i, name);
+                }
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName, 100);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName, 100);
+
+            ses = sesFactory1.openSession();
+
+            Transaction tx = ses.beginTransaction();
+
+            try {
+                ses.save(new Entity(3, "name-3")); // Valid insert.
+
+                ses.save(new Entity(0, "name-0")); // Invalid insert 
(duplicated ID).
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (PersistenceException e) {
+                assertEquals(ConstraintViolationException.class, 
e.getCause().getClass());
+                log.info("Expected exception: " + e);
+
+                tx.rollback();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName, 3);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName, 3);
+
+            if (accessType == AccessType.READ_ONLY)
+                return;
+
+            ses = sesFactory1.openSession();
+
+            tx = ses.beginTransaction();
+
+            try {
+                Entity e0 = (Entity)ses.load(Entity.class, 0);
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                e0.setName("name-10"); // Valid update.
+                e1.setName("name-2"); // Invalid update (violates unique 
constraint).
+
+                ses.update(e0);
+                ses.update(e1);
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (PersistenceException e) {
+                assertEquals(ConstraintViolationException.class, 
e.getCause().getClass());
+                log.info("Expected exception: " + e);
+
+                tx.rollback();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName);
+
+            ses = sesFactory1.openSession();
+
+            try {
+                // Create parent entity referencing Entity with ID = 0.
+
+                tx = ses.beginTransaction();
+
+                ses.save(new ParentEntity(0, (Entity) ses.load(Entity.class, 
0)));
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            ses = sesFactory1.openSession();
+
+            tx = ses.beginTransaction();
+
+            try {
+                ses.save(new Entity(3, "name-3")); // Valid insert.
+
+                Entity e1 = (Entity)ses.load(Entity.class, 1);
+
+                e1.setName("name-10"); // Valid update.
+
+                ses.delete(ses.load(Entity.class, 0)); // Invalid delete 
(there is a parent entity referencing it).
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (PersistenceException e) {
+                assertEquals(ConstraintViolationException.class, 
e.getCause().getClass());
+                log.info("Expected exception: " + e);
+
+                tx.rollback();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName, 3);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName, 3);
+
+            ses = sesFactory1.openSession();
+
+            tx = ses.beginTransaction();
+
+            try {
+                ses.delete(ses.load(Entity.class, 1)); // Valid delete.
+
+                idToName.remove(1);
+
+                ses.delete(ses.load(Entity.class, 0)); // Invalid delete 
(there is a parent entity referencing it).
+
+                tx.commit();
+
+                fail("Commit must fail.");
+            }
+            catch (PersistenceException e) {
+                assertEquals(ConstraintViolationException.class, 
e.getCause().getClass());
+                log.info("Expected exception: " + e);
+
+                tx.rollback();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEntityCache(ENTITY_NAME, sesFactory2, idToName);
+            assertEntityCache(ENTITY_NAME, sesFactory1, idToName);
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testQueryCache() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testQueryCache(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testQueryCache(AccessType accessType) throws Exception {
+        createSessionFactories(accessType);
+
+        try {
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < 5; i++)
+                    ses.save(new Entity(i, "name-" + i));
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            // This sleep is needed in the case that the transaction above 
completes and the next transaction
+            // starts in less than 1 ms, meaning the transaction timestamps 
are the same.
+            // In this scenario the entity update time == query cache update 
time since the times are stored
+            // using the transaction start time.  If those values are equal 
then the query cache will not be
+            // used in the third transaction and the failure will manifest 
itself in this assertion
+            // 'assertEquals(2, 
sesFactory2.getStatistics().getQueryCacheHitCount());'
+            // This behavior is in TimestampsCacheEnabledImpl.isUpToDate() 
line: if ( lastUpdate >= timestamp ) {...}
+            // It is not a hibernate bug, ms just doesn't have the best time 
resolution.
+            // The way to fix it may be to update the 
HibernateRegionFactory.nextTimestamp()
+            // to return a microsecond timestamp.  This may be doable in java 
9.
+            Thread.sleep(1);
+
+            // Run some queries.
+
+            ses = sesFactory1.openSession();
+
+            try {
+                Query qry1 = ses.createQuery("from " + ENTITY_NAME + " where 
id > 2");
+
+                qry1.setCacheable(true);
+
+                assertEquals(2, qry1.list().size());
+
+                Query qry2 = ses.createQuery("from " + ENTITY_NAME + " where 
name = 'name-0'");
+
+                qry2.setCacheable(true);
+
+                assertEquals(1, qry2.list().size());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(0, 
sesFactory1.getStatistics().getQueryCacheHitCount());
+            assertEquals(2, 
sesFactory1.getStatistics().getQueryCacheMissCount());
+            assertEquals(2, 
sesFactory1.getStatistics().getQueryCachePutCount());
+
+            // Run queries using another SessionFactory.  The first two 
queries should now be cached
+
+            ses = sesFactory2.openSession();
+
+            try {
+                Query qry1 = ses.createQuery("from " + ENTITY_NAME + " where 
id > 2");
+
+                qry1.setCacheable(true);
+
+                assertEquals(2, qry1.list().size());
+
+                Query qry2 = ses.createQuery("from " + ENTITY_NAME + " where 
name = 'name-0'");
+
+                qry2.setCacheable(true);
+
+                assertEquals(1, qry2.list().size());
+
+                Query qry3 = ses.createQuery("from " + ENTITY_NAME + " where 
id > 1");
+
+                qry3.setCacheable(true);
+
+                assertEquals(3, qry3.list().size());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(2, 
sesFactory2.getStatistics().getQueryCacheHitCount());
+            assertEquals(1, 
sesFactory2.getStatistics().getQueryCacheMissCount());
+            assertEquals(1, 
sesFactory2.getStatistics().getQueryCachePutCount());
+
+            // Update entity, it should invalidate query cache.
+
+            ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                ses.save(new Entity(5, "name-5"));
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            // Run queries.
+
+            ses = sesFactory1.openSession();
+
+            sesFactory1.getStatistics().clear();
+
+            try {
+                Query qry1 = ses.createQuery("from " + ENTITY_NAME + " where 
id > 2");
+
+                qry1.setCacheable(true);
+
+                assertEquals(3, qry1.list().size());
+
+                Query qry2 = ses.createQuery("from " + ENTITY_NAME + " where 
name = 'name-0'");
+
+                qry2.setCacheable(true);
+
+                assertEquals(1, qry2.list().size());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(0, 
sesFactory1.getStatistics().getQueryCacheHitCount());
+            assertEquals(2, 
sesFactory1.getStatistics().getQueryCacheMissCount());
+            assertEquals(2, 
sesFactory1.getStatistics().getQueryCachePutCount());
+
+            // Clear query cache using another SessionFactory.
+
+            sesFactory2.getCache().evictDefaultQueryRegion();
+
+            ses = sesFactory1.openSession();
+
+            // Run queries again.
+
+            sesFactory1.getStatistics().clear();
+
+            try {
+                Query qry1 = ses.createQuery("from " + ENTITY_NAME + " where 
id > 2");
+
+                qry1.setCacheable(true);
+
+                assertEquals(3, qry1.list().size());
+
+                Query qry2 = ses.createQuery("from " + ENTITY_NAME + " where 
name = 'name-0'");
+
+                qry2.setCacheable(true);
+
+                assertEquals(1, qry2.list().size());
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(0, 
sesFactory1.getStatistics().getQueryCacheHitCount());
+            assertEquals(2, 
sesFactory1.getStatistics().getQueryCacheMissCount());
+            assertEquals(2, 
sesFactory1.getStatistics().getQueryCachePutCount());
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testRegionClear() throws Exception {
+        for (AccessType accessType : accessTypes())
+            testRegionClear(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testRegionClear(AccessType accessType) throws Exception {
+        createSessionFactories(accessType);
+
+        try {
+            final int ENTITY_CNT = 100;
+
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                for (int i = 0; i < ENTITY_CNT; i++) {
+                    Entity e = new Entity(i, "name-" + i);
+
+                    Collection<ChildEntity> children = new ArrayList<>();
+
+                    for (int j = 0; j < 3; j++)
+                        children.add(new ChildEntity());
+
+                    e.setChildren(children);
+
+                    ses.save(e);
+                }
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            loadEntities(sesFactory2, ENTITY_CNT);
+
+            CacheRegionStatistics stats1 = 
sesFactory1.getStatistics().getCacheRegionStatistics(ENTITY_NAME);
+            CacheRegionStatistics stats2 = 
sesFactory2.getStatistics().getCacheRegionStatistics(ENTITY_NAME);
+
+            CacheRegionStatistics idStats1 =
+                
sesFactory1.getStatistics().getCacheRegionStatistics(NATURAL_ID_REGION);
+            CacheRegionStatistics idStats2 =
+                
sesFactory2.getStatistics().getCacheRegionStatistics(NATURAL_ID_REGION);
+
+            CacheRegionStatistics colStats1 =
+                
sesFactory1.getStatistics().getDomainDataRegionStatistics(CHILD_COLLECTION_REGION);
+            CacheRegionStatistics colStats2 =
+                
sesFactory2.getStatistics().getDomainDataRegionStatistics(CHILD_COLLECTION_REGION);
+
+            assertEquals(ENTITY_CNT, stats1.getElementCountInMemory());
+            assertEquals(ENTITY_CNT, stats2.getElementCountInMemory());
+
+            assertEquals(ENTITY_CNT, idStats1.getElementCountInMemory());
+            assertEquals(ENTITY_CNT, idStats2.getElementCountInMemory());
+
+            assertEquals(ENTITY_CNT, colStats1.getElementCountInMemory());
+            assertEquals(ENTITY_CNT, colStats2.getElementCountInMemory());
+
+            // Test cache is cleared after update query.
+
+            ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                ses.createQuery("delete from " + ENTITY_NAME + " where 
name='no such name'").executeUpdate();
+
+                ses.createQuery("delete from " + ChildEntity.class.getName() + 
" where id=-1").executeUpdate();
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            assertEquals(0, stats1.getElementCountInMemory());
+            assertEquals(0, stats2.getElementCountInMemory());
+
+            assertEquals(0, idStats1.getElementCountInMemory());
+            assertEquals(0, idStats2.getElementCountInMemory());
+
+            assertEquals(0, colStats1.getElementCountInMemory());
+            assertEquals(0, colStats2.getElementCountInMemory());
+
+            // Load some data in cache.
+
+            loadEntities(sesFactory1, 10);
+
+            assertEquals(10, stats1.getElementCountInMemory());
+            assertEquals(10, stats2.getElementCountInMemory());
+            assertEquals(10, idStats1.getElementCountInMemory());
+            assertEquals(10, idStats2.getElementCountInMemory());
+
+            // Test evictAll method.
+
+            sesFactory2.getCache().evictEntityRegion(ENTITY_NAME);
+
+            assertEquals(0, stats1.getElementCountInMemory());
+            assertEquals(0, stats2.getElementCountInMemory());
+
+            sesFactory2.getCache().evictNaturalIdRegion(ENTITY_NAME);
+
+            assertEquals(0, idStats1.getElementCountInMemory());
+            assertEquals(0, idStats2.getElementCountInMemory());
+
+            
sesFactory2.getCache().evictCollectionRegion(CHILD_COLLECTION_REGION);
+
+            assertEquals(0, colStats1.getElementCountInMemory());
+            assertEquals(0, colStats2.getElementCountInMemory());
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @param sesFactory Session factory.
+     * @param nameToId Name-ID mapping.
+     * @param absentNames Absent entities' names.
+     */
+    private void assertNaturalIdCache(SessionFactory sesFactory, Map<String, 
Integer> nameToId, String... absentNames) {
+        sesFactory.getStatistics().clear();
+
+        CacheRegionStatistics stats = 
sesFactory.getStatistics().getCacheRegionStatistics(NATURAL_ID_REGION);
+
+        long hitBefore = stats.getHitCount();
+
+        long missBefore = stats.getMissCount();
+
+        final Session ses = sesFactory.openSession();
+
+        try {
+            for (Map.Entry<String, Integer> e : nameToId.entrySet())
+                assertEquals((int) e.getValue(), ((Entity) 
ses.bySimpleNaturalId(Entity.class).load(e.getKey())).getId());
+
+            for (String name : absentNames)
+                assertNull((ses.bySimpleNaturalId(Entity.class).load(name)));
+
+            assertEquals(nameToId.size() + hitBefore, stats.getHitCount());
+
+            assertEquals(absentNames.length + missBefore, 
stats.getMissCount());
+        }
+        finally {
+            ses.close();
+        }
+    }
+
+    /**
+     * @param sesFactory Session factory.
+     * @param idToChildCnt Number of children per entity.
+     * @param expHit Expected cache hits.
+     * @param expMiss Expected cache misses.
+     */
+    @SuppressWarnings("unchecked")
+    private void assertCollectionCache(SessionFactory sesFactory, Map<Integer, 
Integer> idToChildCnt, int expHit,
+        int expMiss) {
+        sesFactory.getStatistics().clear();
+
+        Session ses = sesFactory.openSession();
+
+        try {
+            for(Map.Entry<Integer, Integer> e : idToChildCnt.entrySet()) {
+                Entity entity = (Entity)ses.load(Entity.class, e.getKey());
+
+                assertEquals((int)e.getValue(), entity.getChildren().size());
+            }
+        }
+        finally {
+            ses.close();
+        }
+
+        CacheRegionStatistics stats = 
sesFactory.getStatistics().getCacheRegionStatistics(CHILD_COLLECTION_REGION);
+
+        assertEquals(expHit, stats.getHitCount());
+
+        assertEquals(expMiss, stats.getMissCount());
+    }
+
+    /**
+     * @param sesFactory Session factory.
+     * @param cnt Number of entities to load.
+     */
+    private void loadEntities(SessionFactory sesFactory, int cnt) {
+        Session ses = sesFactory.openSession();
+
+        try {
+            for (int i = 0; i < cnt; i++) {
+                Entity e = (Entity)ses.load(Entity.class, i);
+
+                assertEquals("name-" + i, e.getName());
+
+                assertFalse(e.getChildren().isEmpty());
+
+                ses.bySimpleNaturalId(Entity.class).load(e.getName());
+            }
+        }
+        finally {
+            ses.close();
+        }
+    }
+
+    /**
+     * @param entityName Entity name.
+     * @param sesFactory Session factory.
+     * @param idToName ID to name mapping.
+     * @param absentIds Absent entities' IDs.
+     */
+    private void assertEntityCache(String entityName, SessionFactory 
sesFactory, Map<Integer, String> idToName,
+                                   Integer... absentIds) {
+        assert entityName.equals(ENTITY_NAME) || 
entityName.equals(ENTITY2_NAME) : entityName;
+
+        sesFactory.getStatistics().clear();
+
+        final Session ses = sesFactory.openSession();
+
+        final boolean entity1 = entityName.equals(ENTITY_NAME);
+
+        try {
+            if (entity1) {
+                for (Map.Entry<Integer, String> e : idToName.entrySet())
+                    assertEquals(e.getValue(), ((Entity) 
ses.load(Entity.class, e.getKey())).getName());
+                }
+            else {
+                for (Map.Entry<Integer, String> e : idToName.entrySet())
+                    assertEquals(e.getValue(), ((Entity2) 
ses.load(Entity2.class, e.getKey())).getName());
+            }
+
+            for (final int id : absentIds) {
+                GridTestUtils.assertThrows(log, new Callable<Void>() {
+                    @Override public Void call() throws Exception {
+                        if (entity1)
+                            ((Entity) ses.load(Entity.class, id)).getName();
+                        else
+                            ((Entity2) ses.load(Entity2.class, id)).getName();
+
+                        return null;
+                    }
+                }, ObjectNotFoundException.class, null);
+            }
+
+            CacheRegionStatistics stats = 
sesFactory.getStatistics().getCacheRegionStatistics(entityName);
+            assertEquals(idToName.size(), stats.getHitCount());
+
+            assertEquals(absentIds.length, stats.getMissCount());
+        }
+        finally {
+            ses.close();
+        }
+    }
+
+    /**
+     * Creates session factories.
+     *
+     * @param accessType Cache access type.
+     */
+    private void createSessionFactories(AccessType accessType) {
+        sesFactory1 = startHibernate(accessType, getTestIgniteInstanceName(0));
+
+        sesFactory2 = startHibernate(accessType, getTestIgniteInstanceName(1));
+    }
+
+    /**
+     * Starts Hibernate.
+     *
+     * @param accessType Cache access type.
+     * @param igniteInstanceName Ignite instance name.
+     * @return Session factory.
+     */
+    private SessionFactory 
startHibernate(org.hibernate.cache.spi.access.AccessType accessType, String 
igniteInstanceName) {
+        StandardServiceRegistryBuilder builder = registryBuilder();
+
+        for (Map.Entry<String, String> e : 
hibernateProperties(igniteInstanceName, accessType.name()).entrySet())
+            builder.applySetting(e.getKey(), e.getValue());
+
+        // Use the same cache for Entity and Entity2.
+        builder.applySetting(REGION_CACHE_PROPERTY + ENTITY2_NAME, 
ENTITY_NAME);
+
+        StandardServiceRegistry srvcRegistry = builder.build();
+
+        MetadataSources metadataSources = new MetadataSources(srvcRegistry);
+
+        for (Class entityClass : getAnnotatedClasses())
+            metadataSources.addAnnotatedClass(entityClass);
+
+        Metadata metadata = metadataSources.buildMetadata();
+
+        for (PersistentClass entityBinding : metadata.getEntityBindings()) {
+            if (!entityBinding.isInherited())
+                ((RootClass) 
entityBinding).setCacheConcurrencyStrategy(accessType.getExternalName());
+        }
+
+        for (org.hibernate.mapping.Collection collectionBinding : 
metadata.getCollectionBindings())
+            
collectionBinding.setCacheConcurrencyStrategy(accessType.getExternalName());
+
+        return metadata.buildSessionFactory();
+    }
+
+    /**
+     * @return Entities classes.
+     */
+    private Class[] getAnnotatedClasses() {
+        return new Class[]{Entity.class, Entity2.class, VersionedEntity.class, 
ChildEntity.class, ParentEntity.class};
+    }
+
+    /**
+     * Closes session factories and clears data from caches.
+     *
+     * @throws Exception If failed.
+     */
+    private void cleanup() throws Exception {
+        if (sesFactory1 != null)
+            sesFactory1.close();
+
+        sesFactory1 = null;
+
+        if (sesFactory2 != null)
+            sesFactory2.close();
+
+        sesFactory2 = null;
+
+        for (IgniteCacheProxy<?, ?> cache : ((IgniteKernal)grid(0)).caches())
+            cache.clear();
+    }
+
+    /**
+     * @param igniteInstanceName Node name.
+     * @param dfltAccessType Default cache access type.
+     * @return Properties map.
+     */
+    static Map<String, String> hibernateProperties(String igniteInstanceName, 
String dfltAccessType) {
+        Map<String, String> map = new HashMap<>();
+
+        map.put(HBM2DDL_AUTO, "create");
+        map.put(JPA_SHARED_CACHE_MODE, SharedCacheMode.ALL.name());
+        map.put(GENERATE_STATISTICS, "true");
+        map.put(USE_SECOND_LEVEL_CACHE, "true");
+        map.put(USE_QUERY_CACHE, "true");
+        map.put(CACHE_REGION_FACTORY, HibernateRegionFactory.class.getName());
+        map.put(RELEASE_CONNECTIONS, "on_close");
+        map.put(IGNITE_INSTANCE_NAME_PROPERTY, igniteInstanceName);
+        map.put(DFLT_ACCESS_TYPE_PROPERTY, dfltAccessType);
+
+        return map;
+    }
+}

http://git-wip-us.apache.org/repos/asf/ignite/blob/d9bd387e/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheStrategySelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheStrategySelfTest.java
 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheStrategySelfTest.java
new file mode 100644
index 0000000..e653658
--- /dev/null
+++ 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheStrategySelfTest.java
@@ -0,0 +1,576 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.cache.hibernate;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.cache.Cache;
+import javax.persistence.Cacheable;
+import javax.persistence.Id;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.apache.ignite.internal.IgniteKernal;
+import org.apache.ignite.internal.processors.cache.IgniteCacheProxy;
+import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
+import org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+import org.hamcrest.core.Is;
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.Transaction;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.cache.spi.access.AccessType;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.mapping.RootClass;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import static org.apache.ignite.cache.CacheAtomicityMode.TRANSACTIONAL;
+import static org.apache.ignite.cache.CacheMode.PARTITIONED;
+import static 
org.apache.ignite.cache.hibernate.HibernateAccessStrategyFactory.REGION_CACHE_PROPERTY;
+import static 
org.hibernate.cache.spi.RegionFactory.DEFAULT_QUERY_RESULTS_REGION_UNQUALIFIED_NAME;
+import static 
org.hibernate.cache.spi.RegionFactory.DEFAULT_UPDATE_TIMESTAMPS_REGION_UNQUALIFIED_NAME;
+import static org.hibernate.cfg.AvailableSettings.USE_STRUCTURED_CACHE;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests Hibernate L2 cache configuration.
+ */
+@SuppressWarnings("unchecked")
+@RunWith(JUnit4.class)
+public class HibernateL2CacheStrategySelfTest extends GridCommonAbstractTest {
+    /** */
+    private static final String ENTITY1_NAME = Entity1.class.getName();
+
+    /** */
+    private static final String ENTITY2_NAME = Entity2.class.getName();
+
+    /** */
+    private static final String ENTITY3_NAME = Entity3.class.getName();
+
+    /** */
+    private static final String ENTITY4_NAME = Entity4.class.getName();
+
+    /** */
+    private static final String CONNECTION_URL = 
"jdbc:h2:mem:example;DB_CLOSE_DELAY=-1";
+
+    /** */
+    private SessionFactory sesFactory1;
+
+    /** {@inheritDoc} */
+    @BeforeClass
+    @Override protected void beforeTestsStarted() throws Exception {
+        startGrid(0);
+    }
+
+    /** {@inheritDoc} */
+    @AfterClass
+    @Override protected void afterTestsStopped() throws Exception {
+        stopAllGrids();
+    }
+
+    /** {@inheritDoc} */
+    @After
+    @Override protected void afterTest() throws Exception {
+        for (IgniteCacheProxy<?, ?> cache : ((IgniteKernal)grid(0)).caches())
+            cache.clear();
+    }
+
+    /** {@inheritDoc} */
+    @Override protected IgniteConfiguration getConfiguration(String 
igniteInstanceName) throws Exception {
+        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
+
+        ((TcpDiscoverySpi)cfg.getDiscoverySpi()).setIpFinder(new 
TcpDiscoveryVmIpFinder(true));
+
+        cfg.setCacheConfiguration(cacheConfiguration(ENTITY3_NAME),
+            cacheConfiguration(ENTITY4_NAME),
+            cacheConfiguration("cache1"),
+            cacheConfiguration("cache2"),
+            
cacheConfiguration(DEFAULT_UPDATE_TIMESTAMPS_REGION_UNQUALIFIED_NAME),
+            cacheConfiguration(DEFAULT_QUERY_RESULTS_REGION_UNQUALIFIED_NAME));
+
+        return cfg;
+    }
+
+    /**
+     * @param cacheName Cache name.
+     * @return Cache configuration.
+     */
+    private CacheConfiguration cacheConfiguration(String cacheName) {
+        CacheConfiguration cfg = new CacheConfiguration();
+
+        cfg.setName(cacheName);
+        cfg.setCacheMode(PARTITIONED);
+        cfg.setAtomicityMode(TRANSACTIONAL);
+
+        return cfg;
+    }
+
+    /**
+     * @throws Exception If failed.
+     */
+    @Test
+    public void testEntityCacheReadWrite() throws Exception {
+        for (AccessType accessType : new AccessType[]{AccessType.READ_WRITE, 
AccessType.NONSTRICT_READ_WRITE})
+            testEntityCacheReadWrite(accessType);
+    }
+
+    /**
+     * @param accessType Cache access type.
+     * @throws Exception If failed.
+     */
+    private void testEntityCacheReadWrite(AccessType accessType) throws 
Exception {
+        log.info("Test access type: " + accessType);
+
+        sesFactory1 = startHibernate(accessType, getTestIgniteInstanceName(0));
+
+        try {
+            // 1 Adding.
+            Session ses = sesFactory1.openSession();
+
+            try {
+                Transaction tr = ses.beginTransaction();
+
+                ses.save(new Entity1(1, "entity-1#name-1"));
+                ses.save(new Entity2(1, "entity-2#name-1"));
+
+                tr.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            loadEntities(sesFactory1);
+
+            assertEquals(1, grid(0).cache("cache1").size());
+            assertEquals(1, grid(0).cache("cache2").size());
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache1", 1), 
Is.is("entity-1#name-1"));
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache2", 1), 
Is.is("entity-2#name-1"));
+
+            // 2. Updating and adding.
+            ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity1 e1 = (Entity1)ses.load(Entity1.class, 1);
+
+                e1.setName("entity-1#name-1#UPDATED-1");
+
+                ses.update(e1);
+
+                ses.save(new Entity2(2, "entity-2#name-2#ADDED"));
+
+                tx.commit();
+            }
+            finally {
+                ses.close();
+            }
+
+            loadEntities(sesFactory1);
+
+            assertEquals(1, grid(0).cache("cache1").size());
+            assertEquals(2, grid(0).cache("cache2").size());
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache1", 1), 
Is.is("entity-1#name-1#UPDATED-1"));
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache2", 1), 
Is.is("entity-2#name-1"));
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache2", 2), 
Is.is("entity-2#name-2#ADDED"));
+
+            // 3. Updating, adding, updating.
+            ses = sesFactory1.openSession();
+
+            try {
+                Transaction tx = ses.beginTransaction();
+
+                Entity2 e2_1 = (Entity2)ses.load(Entity2.class, 1);
+
+                e2_1.setName("entity-2#name-1#UPDATED-1");
+
+                ses.update(e2_1);
+
+                ses.save(new Entity1(2, "entity-1#name-2#ADDED"));
+
+                Entity1 e1_1 = (Entity1)ses.load(Entity1.class, 1);
+
+                e1_1.setName("entity-1#name-1#UPDATED-2");
+
+                ses.update(e1_1);
+
+                tx.commit();
+
+            }
+            finally {
+                ses.close();
+            }
+
+            loadEntities(sesFactory1);
+
+            assertEquals(2, grid(0).cache("cache1").size());
+            assertEquals(2, grid(0).cache("cache2").size());
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache2", 1), 
Is.is("entity-2#name-1#UPDATED-1"));
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache1", 2), 
Is.is("entity-1#name-2#ADDED"));
+            assertThat(getEntityNameFromRegion(sesFactory1, "cache1", 1), 
Is.is("entity-1#name-1#UPDATED-2"));
+
+            ses = sesFactory1.openSession();
+
+            sesFactory1.getStatistics().logSummary();
+
+            ses.close();
+        }
+        finally {
+            cleanup();
+        }
+    }
+
+    /**
+     * @param sesFactory Session factory.
+     */
+    private void loadEntities(SessionFactory sesFactory) {
+        Session ses = sesFactory.openSession();
+
+        try {
+            List<Entity1> list1 = ses.createCriteria(ENTITY1_NAME).list();
+
+            for (Entity1 e1 : list1)
+                assertNotNull(e1.getName());
+
+            List<Entity2> list2 = ses.createCriteria(ENTITY2_NAME).list();
+
+            for (Entity2 e2 : list2)
+                assertNotNull(e2.getName());
+        }
+        finally {
+            ses.close();
+        }
+    }
+
+    /**
+     * @param sesFactory Session Factory.
+     * @param regionName Region Name.
+     * @param id Id.
+     * @return Entity Name.
+     */
+    private String getEntityNameFromRegion(SessionFactory sesFactory, String 
regionName, int id) {
+        Session ses = sesFactory.openSession();
+
+        try {
+            for (Cache.Entry<Object, Object> entry : 
grid(0).cache(regionName)) {
+                if (((HibernateKeyWrapper)entry.getKey()).id().equals(id))
+                    return (String) ((HashMap) entry.getValue()).get("name");
+            }
+
+            return null;
+        }
+        finally {
+            ses.close();
+        }
+    }
+
+    /**
+     * @param accessType Cache access typr.
+     * @param igniteInstanceName Name of the grid providing caches.
+     * @return Session factory.
+     */
+    private SessionFactory startHibernate(AccessType accessType, String 
igniteInstanceName) {
+        StandardServiceRegistryBuilder builder = new 
StandardServiceRegistryBuilder();
+
+        builder.applySetting("hibernate.connection.url", CONNECTION_URL);
+
+        for (Map.Entry<String, String> e : 
HibernateL2CacheSelfTest.hibernateProperties(igniteInstanceName, 
accessType.name()).entrySet())
+            builder.applySetting(e.getKey(), e.getValue());
+
+        builder.applySetting(USE_STRUCTURED_CACHE, "true");
+        builder.applySetting(REGION_CACHE_PROPERTY + ENTITY1_NAME, "cache1");
+        builder.applySetting(REGION_CACHE_PROPERTY + ENTITY2_NAME, "cache2");
+        builder.applySetting(REGION_CACHE_PROPERTY + 
DEFAULT_UPDATE_TIMESTAMPS_REGION_UNQUALIFIED_NAME, 
DEFAULT_UPDATE_TIMESTAMPS_REGION_UNQUALIFIED_NAME);
+        builder.applySetting(REGION_CACHE_PROPERTY + 
DEFAULT_QUERY_RESULTS_REGION_UNQUALIFIED_NAME, 
DEFAULT_QUERY_RESULTS_REGION_UNQUALIFIED_NAME);
+
+        MetadataSources metadataSources = new MetadataSources(builder.build());
+
+        metadataSources.addAnnotatedClass(Entity1.class);
+        metadataSources.addAnnotatedClass(Entity2.class);
+        metadataSources.addAnnotatedClass(Entity3.class);
+        metadataSources.addAnnotatedClass(Entity4.class);
+
+        Metadata metadata = metadataSources.buildMetadata();
+
+        for (PersistentClass entityBinding : metadata.getEntityBindings()) {
+            if (!entityBinding.isInherited())
+                
((RootClass)entityBinding).setCacheConcurrencyStrategy(accessType.getExternalName());
+        }
+
+        return metadata.buildSessionFactory();
+    }
+
+    /**
+     * Test Hibernate entity1.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    @Cacheable
+    public static class Entity1 {
+        /** */
+        private int id;
+
+        /** */
+        private String name;
+
+        /**
+         *
+         */
+        public Entity1() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param name Name.
+         */
+        Entity1(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Name.
+         */
+        public String getName() {
+            return name;
+        }
+
+        /**
+         * @param name Name.
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+    }
+
+    /**
+     * Test Hibernate entity2.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    @Cacheable
+    public static class Entity2 {
+        /** */
+        private int id;
+
+        /** */
+        private String name;
+
+        /**
+         *
+         */
+        public Entity2() {
+           // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param name Name.
+         */
+        Entity2(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Name.
+         */
+        public String getName() {
+            return name;
+        }
+
+        /**
+         * @param name Name.
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+    }
+
+    /**
+     * Test Hibernate entity3.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    @Cacheable
+    public static class Entity3 {
+        /** */
+        private int id;
+
+        /** */
+        private String name;
+
+        /**
+         *
+         */
+        public Entity3() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param name Name.
+         */
+        public Entity3(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Name.
+         */
+        public String getName() {
+            return name;
+        }
+
+        /**
+         * @param name Name.
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+    }
+
+    /**
+     * Test Hibernate entity4.
+     */
+    @javax.persistence.Entity
+    @SuppressWarnings({"PublicInnerClass", "UnnecessaryFullyQualifiedName"})
+    @Cacheable
+    public static class Entity4 {
+        /** */
+        private int id;
+
+        /** */
+        private String name;
+
+        /**
+         *
+         */
+        public Entity4() {
+            // No-op.
+        }
+
+        /**
+         * @param id ID.
+         * @param name Name.
+         */
+        public Entity4(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        /**
+         * @return ID.
+         */
+        @Id
+        public int getId() {
+            return id;
+        }
+
+        /**
+         * @param id ID.
+         */
+        public void setId(int id) {
+            this.id = id;
+        }
+
+        /**
+         * @return Name.
+         */
+        public String getName() {
+            return name;
+        }
+
+        /**
+         * @param name Name.
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+    }
+
+    /**
+     * Closes session factories and clears data from caches.
+     *
+     * @throws Exception If failed.
+     */
+    private void cleanup() throws Exception {
+        if (sesFactory1 != null)
+            sesFactory1.close();
+
+        sesFactory1 = null;
+
+        for (IgniteCacheProxy<?, ?> cache : ((IgniteKernal)grid(0)).caches())
+            cache.clear();
+    }
+}

http://git-wip-us.apache.org/repos/asf/ignite/blob/d9bd387e/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalSelfTest.java
 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalSelfTest.java
new file mode 100644
index 0000000..5175292
--- /dev/null
+++ 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalSelfTest.java
@@ -0,0 +1,154 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.cache.hibernate;
+
+import java.util.Collections;
+import javax.cache.configuration.Factory;
+import javax.transaction.Synchronization;
+import javax.transaction.TransactionManager;
+import javax.transaction.UserTransaction;
+import org.apache.commons.dbcp.managed.BasicManagedDataSource;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.h2.jdbcx.JdbcDataSource;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.cache.spi.access.AccessType;
+import org.hibernate.cfg.Environment;
+import 
org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl;
+import org.hibernate.engine.jdbc.connections.spi.ConnectionProvider;
+import 
org.hibernate.engine.transaction.jta.platform.internal.AbstractJtaPlatform;
+import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatform;
+import 
org.hibernate.resource.transaction.backend.jta.internal.JtaTransactionCoordinatorBuilderImpl;
+import org.jetbrains.annotations.Nullable;
+import org.objectweb.jotm.Jotm;
+
+/**
+ *
+ * Tests Hibernate L2 cache with TRANSACTIONAL access mode (Hibernate and 
Cache are configured
+ * to used the same TransactionManager).
+ */
+public class HibernateL2CacheTransactionalSelfTest extends 
HibernateL2CacheSelfTest {
+    /** */
+    private static Jotm jotm;
+
+    /**
+     */
+    private static class TestJtaPlatform extends AbstractJtaPlatform {
+        /** {@inheritDoc} */
+        @Override protected TransactionManager locateTransactionManager() {
+            return jotm.getTransactionManager();
+        }
+
+        /** {@inheritDoc} */
+        @Override protected UserTransaction locateUserTransaction() {
+            return jotm.getUserTransaction();
+        }
+    }
+
+    /**
+     */
+    @SuppressWarnings("PublicInnerClass")
+    public static class TestTmFactory implements Factory<TransactionManager> {
+        /** */
+        private static final long serialVersionUID = 0;
+
+        /** {@inheritDoc} */
+        @Override public TransactionManager create() {
+            return jotm.getTransactionManager();
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override protected void beforeTestsStarted() throws Exception {
+        jotm = new Jotm(true, false);
+
+        super.beforeTestsStarted();
+    }
+
+    /** {@inheritDoc} */
+    @Override protected void afterTestsStopped() throws Exception {
+        super.afterTestsStopped();
+
+        if (jotm != null)
+            jotm.stop();
+
+        jotm = null;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected IgniteConfiguration getConfiguration(String 
igniteInstanceName) throws Exception {
+        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
+
+        cfg.getTransactionConfiguration().setTxManagerFactory(new 
TestTmFactory());
+        
cfg.getTransactionConfiguration().setUseJtaSynchronization(useJtaSynchronization());
+
+        return cfg;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected CacheConfiguration 
transactionalRegionConfiguration(String regionName) {
+        CacheConfiguration cfg = 
super.transactionalRegionConfiguration(regionName);
+
+        cfg.setNearConfiguration(null);
+
+        return cfg;
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override protected StandardServiceRegistryBuilder 
registryBuilder() {
+        StandardServiceRegistryBuilder builder = new 
StandardServiceRegistryBuilder();
+
+        DatasourceConnectionProviderImpl connProvider = new 
DatasourceConnectionProviderImpl();
+
+        BasicManagedDataSource dataSrc = new BasicManagedDataSource(); // 
JTA-aware data source.
+
+        dataSrc.setTransactionManager(jotm.getTransactionManager());
+
+        dataSrc.setDefaultAutoCommit(false);
+
+        JdbcDataSource h2DataSrc = new JdbcDataSource();
+
+        h2DataSrc.setURL(CONNECTION_URL);
+
+        dataSrc.setXaDataSourceInstance(h2DataSrc);
+
+        connProvider.setDataSource(dataSrc);
+
+        connProvider.configure(Collections.emptyMap());
+
+        builder.addService(ConnectionProvider.class, connProvider);
+
+        builder.addService(JtaPlatform.class, new TestJtaPlatform());
+
+        builder.applySetting(Environment.TRANSACTION_COORDINATOR_STRATEGY, 
JtaTransactionCoordinatorBuilderImpl.class.getName());
+
+        return builder;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected AccessType[] accessTypes() {
+        return new AccessType[]{AccessType.TRANSACTIONAL};
+    }
+
+    /**
+     * @return Whether to use {@link Synchronization}.
+     */
+    protected boolean useJtaSynchronization() {
+        return false;
+    }
+}

http://git-wip-us.apache.org/repos/asf/ignite/blob/d9bd387e/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalUseSyncSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalUseSyncSelfTest.java
 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalUseSyncSelfTest.java
new file mode 100644
index 0000000..44899f9
--- /dev/null
+++ 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheTransactionalUseSyncSelfTest.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.cache.hibernate;
+
+import javax.transaction.Synchronization;
+
+/**
+ * Tests Hibernate L2 cache with TRANSACTIONAL access mode and {@link 
Synchronization}
+ * instead of XA resource.
+ */
+public class HibernateL2CacheTransactionalUseSyncSelfTest extends 
HibernateL2CacheTransactionalSelfTest {
+    /** {@inheritDoc} */
+    @Override protected boolean useJtaSynchronization() {
+        return true;
+    }
+}

http://git-wip-us.apache.org/repos/asf/ignite/blob/d9bd387e/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/store/hibernate/CacheHibernateBlobStoreNodeRestartTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/store/hibernate/CacheHibernateBlobStoreNodeRestartTest.java
 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/store/hibernate/CacheHibernateBlobStoreNodeRestartTest.java
new file mode 100644
index 0000000..d5496af
--- /dev/null
+++ 
b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/store/hibernate/CacheHibernateBlobStoreNodeRestartTest.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.cache.store.hibernate;
+
+import org.apache.ignite.cache.CacheAtomicityMode;
+import org.apache.ignite.cache.CacheMode;
+import org.apache.ignite.cache.store.CacheStore;
+import org.apache.ignite.configuration.NearCacheConfiguration;
+import 
org.apache.ignite.internal.processors.cache.integration.IgniteCacheStoreNodeRestartAbstractTest;
+
+public class CacheHibernateBlobStoreNodeRestartTest extends 
IgniteCacheStoreNodeRestartAbstractTest {
+    /** {@inheritDoc} */
+    @Override protected CacheStore getStore() {
+        return new CacheHibernateBlobStore();
+    }
+
+    /** {@inheritDoc} */
+    @Override protected CacheMode cacheMode() {
+        return CacheMode.PARTITIONED;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected CacheAtomicityMode atomicityMode() {
+        return CacheAtomicityMode.ATOMIC;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected NearCacheConfiguration nearConfiguration() {
+        return null;
+    }
+}
\ No newline at end of file

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