oracle_常用sql语句_不断更新中

------------------------------------------------------------------------
-----------------------------------查询数据库表空间---------------
-----------------------------------------------------------------------
select 
     upper(F.TABLESPACE_NAME) "表空间名"，
     D.TOT_GROOTTE_MB "表空间大小(M)",
     ROUND(D.TOT_GROOTTE_MB - F.TOTAL_BYTES,1) "以实用表空间（M）",
     ROUND(F.TOTAL_BYTES,1) "空闲表空间",
     TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,3),'990.99') "使用比"
FROM 
     (select TABLESPACE_NAME,ROUND(SUM(BYTES) / (1024 *1024),2) TOTAL_BYTES,ROUND(MAX(BYTES) / (1024 * 1024),2) MAX_BYTES FROM sys.dba_free_space  group by TABLESPACE_NAME) F
,
(select  DD.TABLESPACE_NAME,ROUND(SUM(DD.BYTES) / (1024 * 1024 ),2)  TOT_GROOTTE_MB   FROM SYS.DBA_DATA_FILES  DD group by DD.TABLESPACE_NAME ) D 
where  D.TABLESPACE_NAME = F.TABLESPACE_NAME   order by 5;