DBA_TABLES 의 BLOCKS AND EMPTYBLOCKS

SQL> select owner,table_name,blocks,EMPTY_BLOCKS from dba_tables where EMPTY_BLOCKS <>0;

OWNER                          TABLE_NAME                         BLOCKS EMPTY_BLOCKS
------------------------------ ------------------------------ ---------- ------------
SCOTT                          TEST_1                             245550         1106

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Total Blocks  ..........................246656
Total Bytes   ..........................2020605952
Total MBytes  ..........................1927
Unused Blocks ..........................1106
Unused Bytes  ..........................9060352
Unused KBytes ..........................8848
Used Blocks   ..........................245550
Used Bytes    ..........................2011545600
Used KBytes   ..........................1964400
Last Used Ext FileId....................4
Last Used Ext BlockId...................376704
Last Used Block.........................7086


BLOCKS*	NUMBER	
Number of used data blocks in the table
EMPTY_BLOCKS*	NUMBER	
Number of empty (never used) data blocks in the table



BLOCKS                    ,   。
EMPTY_BLOCKS        ,            ,           

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