I receive an error (ORA-01008: not all variables bound) from DB when I try to execute the method getTabelaB().

private static List getTabelaB() {
try {
Session session = getSession();

Criteria crit = session.createCriteria(TabelaB.class);
crit.add(Expression.in("tabelaA", getTabelaA(new Long(1))));

return crit.list();

} catch (HibernateException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}

private static List getTabelaA(Long cod) {
try {
Session session = getSession();

Criteria crit = session.createCriteria(TabelaA.class);
crit.add(Expression.eq("cod", cod));
return crit.list();

} catch (HibernateException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}



create table crm.table_a
(
cod number(10) PRIMARY KEY,
nome varchar2(100)
);

create table prohost.table_b
(
cod number(10) PRIMARY KEY,
nome varchar2(100)
);

alter table prohost.tabela_b add (constraint my_constraint foreign key(cod) references crm.tabela_a(cod))

public class TabelaA {
private Long cod;
private String nome;
private iquest.model.entitybean.TabelaB tabelaB;
}

public class TabelaB implements Serializable {
private Long cod;
private String nome;
private iquest.model.entitybean.TabelaA tabelaA;
}


<class name="iquest.model.entitybean.TabelaA" table="TABELA_A" schema="CRM">
<id name="cod" type="java.lang.Long" column="COD">
<generator class="assigned" />
</id>
<property name="nome" type="java.lang.String" column="NOME" length="100"/>
<one-to-one name="tabelaB" class="iquest.model.entitybean.TabelaB" outer-join="auto"/>
</class>

<class name="iquest.model.entitybean.TabelaB" table="TABELA_B" schema="PROHOST" >
<id name="cod" type="java.lang.Long" column="COD">
<generator class="assigned" />
</id>
<property name="nome" type="java.lang.String" column="NOME" length="100"/>
<one-to-one name="tabelaA" class="iquest.model.entitybean.TabelaA" outer-join="auto" constrained="true"/>
</class>


Can anybody help me ?

Thanks
Rogerio