ORACLE EBS操作某一个FORM界面，或者后台数据库操作某一个表时发现一直出于"假死"状态，可能是该表被某一用户锁定，导致其他用户无法继续操作 代码如下:
1 --锁表查询SQL： SELECT object_name, machine, s.sid, s.serial# 2 FROM gv$locked_object l, dba_objects o, gv$session s 3 WHERE l.object_id = o.object_id 4 AND l.session_id = s.sid;
找到被锁定的表，解锁代码如下:
--释放SESSION SQL: --alter system kill session 'sid, serial#'; ALTER system kill session '23, 1647';
--1、查看表空间的名称及大小 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、查看表空间物理文件的名称及大小 SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name; --3、查看回滚段名称及大小 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$rollstat v WHERE r.segment_id = v.usn(+) ORDER BY segment_name; --4、查看控制文件 SELECT NAME FROM v$controlfile; --5、查看日志文件 SELECT MEMBER FROM v$logfile; --6、查看表空间的使用情况 SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name FROM dba_free_space GROUP BY tablespace_name; SELECT a.tablespace_name, a.bytes total, b.bytes used, c.bytes free, (b.bytes * 100) / a.bytes "% USED ", (c.bytes * 100) / a.bytes "% FREE " FROM sys.sm$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、查看数据库库对象 SELECT owner, object_type, status, COUNT(*) count# FROM all_objects GROUP BY owner, object_type, status; --8、查看数据库的版本 SELECT version FROM product_component_version WHERE substr(product, 1, 6) = 'Oracle'; --9、查看数据库的创建日期和归档方式 SELECT created, log_mode, log_mode FROM v$database;
1 --1G=1024MB 2 --1M=1024KB 3 --1K=1024Bytes 4 --1M=11048576Bytes 5 --1G=1024*11048576Bytes=11313741824Bytes 6 SELECT a.tablespace_name "表空间名", 7 total "表空间大小", 8 free "表空间剩余大小", 9 (total - free) "表空间使用大小", 10 total / (1024 * 1024 * 1024) "表空间大小(G)", 11 free / (1024 * 1024 * 1024) "表空间剩余大小(G)", 12 (total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)", 13 round((total - free) / total, 4) * 100 "使用率 %" 14 FROM (SELECT tablespace_name, SUM(bytes) free 15 FROM dba_free_space 16 GROUP BY tablespace_name) a, 17 (SELECT tablespace_name, SUM(bytes) total 18 FROM dba_data_files 19 GROUP BY tablespace_name) b 20 WHERE a.tablespace_name = b.tablespace_name