Oracle 查询某个表所占空间

SQL>

SQL> SELECT segment_name AS TABLENAME,

2 BYTES B,

3 BYTES / 1024 KB,

4 BYTES / 1024 / 1024 MB

5 FROM user_segments

6 where segment_name in ('DIM_CUSTOMER', 'FACT_SALES_INVC', 'FACT_SALES_ITEM',

7 'DIM_STORE', 'DIM_INVN_ITEM')

8 order by bytes desc;

TABLENAME B KB MB

-------------------------------------------------------------------------------- ---------- ---------- ----------

FACT_SALES_ITEM 184549376 180224 176

FACT_SALES_INVC 146800640 143360 140

DIM_CUSTOMER 75497472 73728 72

DIM_INVN_ITEM 49283072 48128 47

DIM_STORE 65536 64 0.0625

SQL>