Check Unused Space

SQL> set serveroutput on

SQL> set pages 1000

SQL> set lines 160

SQL> DECLARE

2 alc_bks NUMBER;

3 alc_bts NUMBER;

4 unsd_bks NUMBER;

5 unsd_bts NUMBER;

6 luefi NUMBER;

7 luebi NUMBER;

8 lub NUMBER;

9 BEGIN

10 DBMS_SPACE.UNUSED_SPACE (

11 segment_owner => 'RNCRY'

12 , segment_name => 'COMS'

13 , segment_type => 'TABLE'

14 , total_blocks => alc_bks

15 , total_bytes => alc_bts

16 , unused_blocks => unsd_bks

17 , unused_bytes => unsd_bts

18 , last_used_extent_file_id => luefi

19 , last_used_extent_block_id => luebi

20 , last_used_block => lub

21 );

22

23 DBMS_OUTPUT.PUT_LINE('Allocated space = '|| alc_bts );

24 DBMS_OUTPUT.PUT_LINE('Actual used space = '|| unsd_bts );

25 EXCEPTION

26 WHEN OTHERS THEN

27 DBMS_OUTPUT.PUT_LINE(SUBSTR(SQLERRM,1,250));

28 END;

29 /

Allocated space = 8534360064

Actual used space = 46874624



PL/SQL procedure successfully completed.