2 deep cascade saves do not work on Oracle

String name	
static hasMany = [books:Book]	

String name		
static belongsTo = [author:Author]	
static hasMany = [pages:Page]

Integer pageNumber	
static belongsTo = [book:Book]

void test2DeepCascadeLevel1(){
	Author a = new Author(name:"test")
		
	Book b = new Book(name:"test")
	a.addToBooks(b)
		
	Page p = new Page(pageNumber:1)
	b.addToPages(p)
		
	a.save(failOnError:true)
		
	assert Book.list().size() == 1
}

void test2DeepCascadeLevel2(){
	Author a = new Author(name:"test")
		
	Book b = new Book(name:"test")
	a.addToBooks(b)
		
	Page p = new Page(pageNumber:1)
	b.addToPages(p)
		
	a.save(failOnError:true)
		
	assert Page.list().size() == 1
}

 
junit.framework.AssertionFailedError: Assertion failed: 

assert Page.list().size() == 1
            |      |      |
            []     0      false

	at AuthorIntegrationTests.test3DeepCascadeLevel3(AuthorIntegrationTests.groovy:43)

 
Hibernate: select hibernate_sequence.nextval from dual
Hibernate: insert into author (version, name, id) values (?, ?, ?)
Hibernate: select hibernate_sequence.nextval from dual
Hibernate: insert into book (version, author_id, name, id) values (?, ?, ?, ?)
Hibernate: select this_.id as id0_0_, this_.version as version0_0_, this_.book_id as book3_0_0_, this_.page_number as page4_0_0_ from page this_