Order inserts not working with Hibernate JOINED inheritence strategy

Question

When using JOINED inheritence strategy hibernate is not ordering inserts and as a result batch inserts are not working. This is causing a performance hit. Is there any way to keep using the strategy and configure hibernate to order the inserts? I have used id generation strategy as sequence so that is not the issue.

As an example say we have abstraction Animal. Dog, Cat etc.. are the concrete entities. Following are the operations.

Animal a = new Dog();
Animal b = new Cat();
save(a);
save(b);

SQL statements in console that are logged.

insert into animal...;
insert into dog...;
insert into animal...;
insert into cat...;

What I expect hibernate to do..

insert into animal...;
insert into animal...;
executing batch of size 2;
insert into dog..;
insert into cat..;