Oracle SQL語句記錄

1、oracel 查看表空間使用情況。

SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name FROM dba_free_space GROUP BY tablespace_name;

SELECT a.tablespace_name, a.bytes total, b.bytes used, c.bytes free, (b.bytes * 100) / a.bytes "% USED ", (c.bytes * 100) / a.bytes "% FREE " FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c WHERE a.tablespace_name = b.tablespace_name AND a.tablespace_name = c.tablespace_name;