-- create tablespace assm -- extent management local uniform size 1m -- segment space management auto -- datafile -- '/abc/db01/oracle/ABC1P/oradata/assm_01.dbf' size 1000m; create table test_assm ( n1 number, v1 varchar2(50), v2 varchar2(50), v3 varchar2(50), v4 varchar2(50), v5 varchar2(50), v6 varchar2(50), v7 varchar2(50), v8 varchar2(50), v9 varchar2(50), v10 varchar2(50) ) tablespace USERS; begin for i in 1..1000000 loop insert into test_assm values (i, '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567'); end loop; end; / COMMIT; ALTER SESSION SET plsql_optimize_level = 0; begin for i in 1..1000 loop insert into test_assm values (i, '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567', '123456789*123456789*123456789*123456789*1234567'); end loop; end; / PROMPT Deleting all rows from the table, do not commit... DELETE test_assm; PROMPT Re-execute script that inserts 1000 rows from a different session - this should be very slow