查看表空间使用情况
--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;
查看表数据文件情况
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;
查看数据库的版本
SELECT version FROM product_component_version WHERE substr(product,6) = 'Oracle';