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ORACLE 表空间查询sql oracle查看表空间大小 sql

ins518 2024-11-13 12:04:56 技术文章 10 ℃ 0 评论

SELECT created, log_mode, log_mode FROM v$database;

--1G=1024MB

--1M=1024KB

--1K=1024Bytes

--1M=11048576Bytes

--1G=1024*11048576Bytes=11313741824Bytes

SELECT a.tablespace_name "表空间名",

total "表空间大小",

free "表空间剩余大小",

(total - free) "表空间使用大小",

total / (1024 * 1024 * 1024) "表空间大小(G)",

free / (1024 * 1024 * 1024) "表空间剩余大小(G)",

(total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)",

round((total - free) / total, 4) * 100 "使用率 %"

FROM (SELECT tablespace_name, SUM(bytes) free

FROM dba_free_space

GROUP BY tablespace_name) a,

(SELECT tablespace_name, SUM(bytes) total

FROM dba_data_files

GROUP BY tablespace_name) b

WHERE a.tablespace_name = b.tablespace_name