@Entity
public static class A {
	@Id @GeneratedValue(strategy = GenerationType.AUTO) Long id;
}

@Entity
public static class B {
	@Id @GeneratedValue(strategy = GenerationType.AUTO) Long id;

	@ManyToOne(cascade = {CascadeType.PERSIST})
	@JoinTable(name = "test")
	A a;
}

// Some comments here
public String getFoo()
{
    return foo;
}

B b = new B();
b.a = new A();
em.persist( b );
b = em.find( B.class, b.id );
em.lock( b, LockModeType.PESSIMISTIC_WRITE );
em.flush();
em.refresh( b );

javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not extract ResultSet

	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
	at org.hibernate.internal.SessionImpl.fireRefresh(SessionImpl.java:1337)
	at org.hibernate.internal.SessionImpl.refresh(SessionImpl.java:1278)
	at org.hibernate.jpa.test.lock.PessimisticWriteWithOptionalOuterJoinBreaksRefreshTest.lambda$pessimisticWriteWithOptionalOuterJoinBreaksRefreshTest$1(PessimisticWriteWithOptionalOuterJoinBreaksRefreshTest.java:64)
	at org.hibernate.testing.transaction.TransactionUtil.doInJPA(TransactionUtil.java:205)
	at org.hibernate.testing.transaction.TransactionUtil.doInJPA(TransactionUtil.java:246)
	at org.hibernate.jpa.test.lock.PessimisticWriteWithOptionalOuterJoinBreaksRefreshTest.pessimisticWriteWithOptionalOuterJoinBreaksRefreshTest(PessimisticWriteWithOptionalOuterJoinBreaksRefreshTest.java:60)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.exception.GenericJDBCException: could not extract ResultSet
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:69)
	at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.getResultSet(AbstractLoadPlanBasedLoader.java:419)
	at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeQueryStatement(AbstractLoadPlanBasedLoader.java:191)
	at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:121)
	at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86)
	at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:188)
	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4271)
	at org.hibernate.event.internal.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:205)
	at org.hibernate.event.internal.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:48)
	at org.hibernate.internal.SessionImpl.fireRefresh(SessionImpl.java:1327)
	... 20 more
Caused by: org.h2.jdbc.JdbcSQLException: Feature not supported: "MVCC=TRUE && FOR UPDATE && JOIN"; SQL statement:
select pessimisti0_.id as id1_1_0_, pessimisti0_1_.a_id as a_id1_2_0_ from PessimisticWriteWithOptionalOuterJoinBreaksRefreshTest$B pessimisti0_ left outer join test pessimisti0_1_ on pessimisti0_.id=pessimisti0_1_.id where pessimisti0_.id=? for update [50100-196]
	at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
	at org.h2.message.DbException.get(DbException.java:179)
	at org.h2.message.DbException.get(DbException.java:155)
	at org.h2.message.DbException.getUnsupportedException(DbException.java:216)
	at org.h2.command.dml.Select.queryWithoutCache(Select.java:604)
	at org.h2.command.dml.Query.queryWithoutCacheLazyCheck(Query.java:114)
	at org.h2.command.dml.Query.query(Query.java:371)
	at org.h2.command.dml.Query.query(Query.java:333)
	at org.h2.command.CommandContainer.query(CommandContainer.java:113)
	at org.h2.command.Command.executeQuery(Command.java:201)
	at org.h2.jdbc.JdbcPreparedStatement.executeQuery(JdbcPreparedStatement.java:111)
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:60)
	... 29 more