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oracle Oracle 查看錶空間、資料檔案的大小及使用方式sql語句
--資料表空間--1G=1024MB--1M=1024KB--1K=1024Bytes--1M=11048576Bytes--1G=1024*11048576Bytes=11313741824BytesSELECT 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;--資料檔案select b.file_name 物理檔案名稱, b.tablespace_name 資料表空間, 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; --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;
zbb20170816 oracle Oracle 查看錶空間、資料檔案的大小及使用方式sql語句