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唐老师:
看到HR用户下有一个IOT的 表,这个表有25行数据,但是在dba_segment中却看不到表大小的信息。
详情如下:
SQL> select owner,table_name,status,iot_type from dba_tables where table_name='COUNTRIES';
OWNER TABLE_NAME STATUS IOT_TYPE
------------------------------ ------------------------------ -------- ------------
SH COUNTRIES VALID
HR COUNTRIES VALID IOT
SQL> SELECT owner, segment_name,BYTES from dba_segments where segment_name='COUNTRIES';
OWNER SEGMENT_NAME BYTES
------------------------------ --------------------------------------------------------------------------------- ----------
SH COUNTRIES 65536
SQL> select count(*) from hr.COUNTRIES;
COUNT(*)
----------
25
请教唐老师,这种表的大小怎么查看?
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