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;