标签:des style blog http color io 使用 ar for
Flashback Query 函数,存储过程,包,触发器等对象
Flashback Drop 可以闪回与表相关联的对象, 如果是其他的对象,比如function,procedure,trigger等。 这时候,就需要使用到ALL_SOURCE 表来进行Flashback Query。
ALL_SOURCE describes the text source of the stored objects accessible to the current user.
Related Views
DBA_SOURCE describes the text source of all stored objects in the database.
USER_SOURCE describes the text source of the stored objects owned by the current user. This view does not display the OWNER column.
基于timestamp恢复的语句
SQL>SELECT text
FROM dba_source
AS OF TIMESTAMP TO_TIMESTAMP (‘XXXXX‘, ‘YYYY-MM-DD HH24:MI:SS‘)
WHERE owner = ‘XXXX‘ AND name = ‘你删除的对象名‘
ORDER BY line;
==========函数=================
未例:
SQL> CREATE OR REPLACE function getdate return date 2 as 3 v_date date; 4 begin 5 select sysdate into v_date from dual; 6 return v_date; 7 end; 8 / 函数已创建。
---------------查询函数---------------------------------------
SQL> ALTER SESSION SET NLS_DATE_FORMAT=‘YYYY-MM-DD HH24:MI:SS‘; 会话已更改。 SQL> select getdate() from dual; GETDATE() ------------------- 2014-10-16 21:52:11
------------查询dba_source表-----------------------------------
SQL> select text from dba_source where name=‘GETDATE‘ order by line; TEXT -------------------------------------------------------------------------------- function getdate return date as v_date date; begin select sysdate into v_date from dual; return v_date; end; 已选择7行。
-----------------------------drop 函数,在查询,记录不存在----------------------
SQL> drop function getdate; 函数已删除。 SQL> select text from dba_source where name=‘GETDATE‘; 未选定行
--------------------使用flashback query 查询-------------------------------------
SQL> select text from dba_source as of timestamp to_timestamp(‘2014-10-16 21:52:11‘,‘yyyy-mm-dd hh24:mi:ss‘) where name=‘GETDATE‘ order by line; TEXT -------------------------------------------------------------------------------- function getdate return date as v_date date; begin select sysdate into v_date from dual; return v_date; end; 已选择7行。
重新执行该函数的代码即可恢复getdate函数
《FROM:http://blog.csdn.net/tianlesoftware/article/details/4677378》
标签:des style blog http color io 使用 ar for
原文地址:http://www.cnblogs.com/rusking/p/4029826.html