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10.2.0.5
sys@emrep> create table t1 as select * from dba_objects where 1=0;
Table created.
sys@emrep> analyze table t1 compute statistics;
Table analyzed.
sys@emrep> select table_name,empty_blocks from dba_tables where table_name=’T1′;
TABLE_NAME EMPTY_BLOCKS
———————————————————— ————
T1 7
sys@emrep> insert into t1 select * from dba_objects ;
16872 rows created.
sys@emrep> commit;
Commit complete.
sys@emrep> analyze table t1 compute statistics;
Table analyzed.
sys@emrep> select table_name,empty_blocks from dba_tables where table_name=’T1′;
TABLE_NAME EMPTY_BLOCKS
———————————————————— ————
T1 28
sys@emrep> delete from t1;
16872 rows deleted.
sys@emrep> commit;
Commit complete.
sys@emrep> analyze table t1 compute statistics;
Table analyzed.
sys@emrep>
sys@emrep> select table_name,empty_blocks from dba_tables where table_name=’T1′;
TABLE_NAME EMPTY_BLOCKS
———————————————————— ————
T1 28
sys@emrep>
sys@emrep>
sys@emrep> truncate table t1;
Table truncated.
sys@emrep> analyze table t1 compute statistics;
Table analyzed.
sys@emrep> select table_name,empty_blocks from dba_tables where table_name=’T1′;
TABLE_NAME EMPTY_BLOCKS
———————————————————— ————
T1 7
sys@emrep>
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