oracle 的表空间实例详解
查询表空间
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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 4 DESC ;
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添加一个表空间文件:
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ALTER TABLESPACE TESTTBS
ADD DATAFILE 'D:/ora/datafile/users.ora' SIZE 500M
AUTOEXTEND ON
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原文链接:https://my.oschina.net/u/1540190/blog/787008