oracle 的表空间实例详解
查询表空间
sql;">
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;
sql;">
ALTER TABLESPACE TESTTBS
ADD DATAFILE 'D:/ora/datafile/users.ora' SIZE 500M
AUTOEXTEND ON
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