Oracle管理方面的3个近期汇总整理

1、语句修改oracle用户密码

 alter user edw1010 identified by edw1010;

其实这很简单,但因为不经常用,所以用到的时候会显得有些手忙脚乱的。

2、查看已经删除的代码脚本

参考语句如下:

 --可用于查看闪回查询的对象(PROCEDURE、PACKAGE、PACKAGE BODY、TYPE BODY、TRIGGER、FUNCTION、TYPE) --实际上就是在数据字典表上ORACLE的闪回查询的利用 --以sys作为DBA登录 select * from dba_source as of timestamp to_timestamp('2011-01-23 06:56:00', 'YYYY-MM-DD HH24:MI:SS') where owner = 'EDW' and type = 'PROCEDURE'; select * from dba_source as of timestamp to_timestamp('2011-01-23 07:46:00', 'YYYY-MM-DD HH24:MI:SS') where owner = 'EDW' and type = 'FUNCTION';

表结构的闪回查看

 --下面的语句可以查看表结构建表语句,但对闪回查询不起作用 SELECT DBMS_METADATA.GET_DDL('TABLE', 'TEST', 'EDW') FROM DUAL as of timestamp to_timestamp('2011-01-23 08:13:30', 'YYYY-MM-DD HH24:MI:SS'); --但可以如下语句查看表结构状态 select * from dba_tab_columns as of timestamp to_timestamp('2011-01-23 08:27:00', 'YYYY-MM-DD HH24:MI:SS') where owner = 'EDW' and table_name='GBICC';

3、生成删除用户下对象语句的脚本

 --删除某个用户下的对象 set heading off; set feedback off; spool D:/drop_user_obj.sql; prompt --开始生成删除当前用户下如下对象的脚本(若本脚本列示的不全,可自行添加) prompt --Drop constraint select 'alter table ' || table_name || ' drop constraint ' || constraint_name || ' ;' from user_constraints where constraint_type = 'R'; prompt --Drop tables select 'drop table ' || table_name || ';' from user_tables; prompt --Drop view select 'drop view ' || view_name || ';' from user_views; prompt --Drop procedure select 'drop procedure ' || object_name || ';' from user_procedures where object_type = 'PROCEDURE'; prompt --Drop function select 'drop function ' || object_name || ';' from user_procedures where object_type = 'FUNCTION'; prompt --Drop sequence select 'drop sequence ' || sequence_name || ';' from user_sequences; spool off;

 

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