show parameter block_size;

drop cluster emp_cluster# including tables;

create cluster emp_cluster# ( empno number(4) ) pctfree 0 size 2000 index ;

create index emp_cluster_idx on cluster emp_cluster#;

create table emp
cluster emp_cluster# ( empno )
as
select * from scott.emp;

select emp.empno, emp.ename, dbms_rowid.rowid_block_number(rowid) block_no
from   emp ;

drop table emp purge;

create table emp
cluster emp_cluster# ( empno )
as
select empno, ename, lpad('*', 970) data   --  ο찡 1000 Ʈ ǵ
from   scott.emp,(select rownum no from dual connect by level <= 10)
where  empno = 7900;

select empno, ename, dbms_rowid.rowid_block_number(rowid) block_no
from   emp ;

