想查询表空间应该怎么操作？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？
SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
D.TOT_GROOTTE_MB "表空间大小(M)",
D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,
2),
'990.99') "使用比",
F.TOTAL_BYTES "空闲空间(M)",
F.MAX_BYTES "最大块(M)"
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 1;
系统数据字典 DBA_TABLESPACES 中记录了关于表空间的详细信息：
select * from sys.dba_tablespaces;
数据字典 DBA_TABLESPACES 中的字段和含义:
TABLESPACE_NAME
Tablespace name
BLOCK_SIZE
Tablespace block size
INITIAL_EXTENT
Default initial extent size
NEXT_EXTENT
Default incremental extent size
MIN_EXTENTS
Default minimum number of extents
MAX_EXTENTS
Default maximum number of extents
PCT_INCREASE
Default percent increase for extent size
MIN_EXTLEN
Minimum extent size for the tablespace
STATUS
"Tablespace status: "ONLINE","OFFLINE" or "READ
CONTENTS
Tablespace contents: "PERMANENT" or "TEMPORARY" or "UNDO"
LOGGING
Default logging attribute
FORCE_LOGGING
Tablespace force logging mode
EXTENT_MANAGEMENT
Extent management tracking: "DICTIONARY" or "LOCAL"
ALLOCATION_TYPE
Type of extent allocation in effect for this tablespace
PLUGGED_IN
--
SEGMENT_SPACE_MANAGEMENT
Segment space management tracking: "AUTO" or "MANUAL"
不想通过sql查 可以用管理软件，直接看