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Oracle数据库查看表空间sql语句
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1、oracle查看表空间当前用户
select username,default_tablespace from user_users;
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2、oracle 查看表所属表空间
SELECT TABLE_NAME,TABLESPACE_NAME FROM USER_TABLES where TABLE_NAME = 'test_table'
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3、oracle查看表空间大小(单位不是GB)
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", 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
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4、oracle查看表空间大小 -单位GB
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;
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