查询Oracle数据库表空间和数据文件方法

--查看Oracle数据库中表空间信息的命令方法：

SELECT A.A1 "表空间名称",

C.C2 "类型",

C.C3 "区管理",

(B.B2 / 1024 / 1024) "表空间大小M",

(B.B2 - A.A2) / 1024 / 1024 "已使用M",

SUBSTR((B.B2 - A.A2) / B.B2 * 100, 1, 5) "利用率"

FROM (SELECT TABLESPACE_NAME A1, SUM(NVL(BYTES, 0)) A2

FROM DBA_FREE_SPACE

GROUP BY TABLESPACE_NAME) A,

(SELECT TABLESPACE_NAME B1, SUM(BYTES) B2

FROM DBA_DATA_FILES

GROUP BY TABLESPACE_NAME) B,

(SELECT TABLESPACE_NAME C1, CONTENTS C2, EXTENT_MANAGEMENT C3

FROM DBA_TABLESPACES) C

WHERE A.A1 = B.B1

AND C.C1 = B.B1;

--查看Oracle数据库中数据文件信息的命令方法

SELECT B.FILE_NAME "物理文件名",

B.TABLESPACE_NAME "表空间",

B.BYTES / 1024 / 1024 "大小M",

(B.BYTES - SUM(NVL(A.BYTES, 0))) / 1024 / 1024 "已使用M",

SUBSTR((B.BYTES - SUM(NVL(A.BYTES, 0))) / (B.BYTES) * 100, 1, 5) "利用率"

FROM DBA_FREE_SPACE A, DBA_DATA_FILES B

WHERE A.FILE_ID = B.FILE_ID

GROUP BY B.TABLESPACE_NAME, B.FILE_NAME, B.BYTES

ORDER BY B.TABLESPACE_NAME;

-- 查看数据文件

SET linesize 1000;

select file#,status,name from v$datafile;

SELECT group#,sequence#,status,archived FROM v$log;

SELECT * FROM v$logfile;

SELECT * FROM v$controlfile;