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;
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