標籤:之一:Oracle資料庫操作中,我們有時會用到鎖表查詢以及解鎖和kill進程等操作(1)鎖表查詢的代碼有以下的形式:select count(*) from v$locked_object;select * from v$locked_object;(2)查看哪個表被鎖select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id =
標籤:來源於:Defining a Database Service with a Stand Alone Database (文檔 ID 1260134.1)APPLIES TO:Oracle Database - Enterprise Edition - Version 10.2.0.5 to 11.2.0.3 [Release 10.2 to 11.2]Information in this document applies to any platform.GOALThe
標籤: select column_name,data_type,DATA_LENGTH From all_tab_columns where table_name=upper(‘表名‘) AND owner=upper(‘資料庫登入使用者名稱‘)select column_name,data_type,DATA_LENGTH From all_tab_columns where table_name=upper(‘Mid_Payinfo‘) AND owner=upper(‘cgtest‘)
標籤:分區表有非常多優點,以大化小,一小化了,加上並行的使用,在loap中能往往能提高几十倍甚至幾百倍的效果。當然表設計得不好也會適得其反。效果比普通表跟糟糕。為了更好的使用分區表,這裡看一下分區表的運行計劃。PARTITION RANGE ALL:掃描全部分區PARTITION RANGE ITERATOR:掃描多個分區,小於全部個分區數量PARTITION RANGE
標籤: drop user xxx cascade;drop tablespace xxx including contents and datafiles;create tablespace xxx datafile ‘E:\oracle\product\10.2.0\oradata\ts\xxx.dbf‘ size 100M autoextend on next 10m maxsize unlimited;create user xxx identified by "ppp"