create cluster c_deptno# ( deptno number(2) ) index ;

create index i_deptno# on cluster c_deptno#;

create table emp
cluster c_deptno# (deptno)
as
select * from scott.emp;

create table dept
cluster c_deptno# (deptno)
as
select * from scott.dept;

select owner, table_name from dba_tables where cluster_name = 'C_DEPTNO#';

break on deptno skip 1;
select d.deptno, e.empno, e.ename
     , dbms_rowid.rowid_block_number(d.rowid) dept_block_no
     , dbms_rowid.rowid_block_number(e.rowid) emp_block_no
from   dept d, emp e
where  e.deptno = d.deptno
order by d.deptno;




