Oracle 查看錶空間的大小及使用方式sql語句

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--1、查看錶空間的名稱及大小 SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size FROM dba_tablespaces t, dba_data_files d WHERE t.tablespace_name = d.tablespace_name GROUP BY t.tablespace_name; --2、查看錶空間物理檔案的名稱及大小 SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name; --3、查看復原段名稱及大小 SELECT segment_name, tablespace_name, r.status, (initial_extent / 1024) initialextent, (next_extent / 1024) nextextent, max_extents, v.curext curextent FROM dba_rollback_segs r, v$rollstat v WHERE r.segment_id = v.usn(+) ORDER BY segment_name; --4、查看控制檔案 SELECT NAME FROM v$controlfile; --5、查看記錄檔 SELECT MEMBER FROM v$logfile; --6、查看錶空間的使用方式 SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name FROM dba_free_space GROUP BY tablespace_name; SELECT a.tablespace_name, a.bytes total, b.bytes used, c.bytes free, (b.bytes * 100) / a.bytes "% USED ", (c.bytes * 100) / a.bytes "% FREE " FROM sys.sm$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; --7、查看資料庫庫對象 SELECT owner, object_type, status, COUNT(*) count# FROM all_objects GROUP BY owner, object_type, status; --8、查看資料庫的版本　 SELECT version FROM product_component_version WHERE substr(product, 1, 6) = ‘Oracle‘; --9、查看資料庫的建立日期和歸檔方式 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 "資料表空間名", total "資料表空間大小", free "資料表空間剩餘大小", (total - free) "資料表空間使用大小", total / (1024 * 1024 * 1024) "資料表空間大小(G)", free / (1024 * 1024 * 1024) "資料表空間剩餘大小(G)", (total - free) / (1024 * 1024 * 1024) "資料表空間使用大小(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 

 

Oracle 查看錶空間的大小及使用方式sql語句