非归档数据文件offline的恢复
本文主要介绍非归档模式下offline数据文件的恢复，测试过程如下：
SQL> select * from v$version where rownum<3;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bi
PL/SQL Release 10.2.0.5.0 - Production
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination /u01/prod_arch
Oldest online log sequence 17
Current log sequence 19
---控件文件中的SCN
SQL> select file#,status,checkpoint_change# from v$datafile order by 1;
FILE# STATUS CHECKPOINT_CHANGE#
---------- ------- ------------------
1 SYSTEM 554606
2 ONLINE 554606
3 ONLINE 554606
4 ONLINE 554606
5 ONLINE 554606
--数据文件头中的SCN
SQL> select file#,status,checkpoint_change# from v$datafile_header order by 1;
FILE# STATUS CHECKPOINT_CHANGE#
---------- ------- ------------------
1 ONLINE 554606
2 ONLINE 554606
3 ONLINE 554606
4 ONLINE 554606
5 ONLINE 554606
--日志文件的情况
SQL> select * from v$Log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------
1 1 19 52428800 1 NO CURRENT 543593 29-OCT-13
2 1 17 52428800 1 YES INACTIVE 500547 29-OCT-13
3 1 18 52428800 1 YES INACTIVE 521183 29-OCT-13
--offline数据文件5，在为进行日志切换的i情况下直接rcover然后在online就可以恢复。
SQL> alter database datafile 5 offline drop;
Database altered.
SQL> alter database datafile 5 online;
alter database datafile 5 online
*
ERROR at line 1:
ORA-01113: file 5 needs media recovery if it was restored from backup, or END BACKUP if it was not
ORA-01110: data file 5: '/u01/app/oracle/oradata/ptod/zxy01.dbf'
SQL> recover datafile 5;
Media recovery complete.
SQL> alter database datafile 5 online;
Database altered.
二、在日志被覆盖的情况下：
SQL> alter system switch logfile;
System altered.
SQL> select file#,checkpoint_change# from v$datafile;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 554973
2 554973
3 554973
4 554973
5 554973
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------
1 1 22 52428800 1 NO INACTIVE 554969 30-OCT-13
2 1 23 52428800 1 NO INACTIVE 554971 30-OCT-13
3 1 24 52428800 1 NO CURRENT 554973 30-OCT-13
SQL> alter database datafile 5 offline drop;
Database altered.
SQL> alter system switch logfile;
System altered.
SQL> alter system switch logfile;
System altered.
SQL> alter system switch logfile;
System altered.
SQL> alter system switch logfile;
System altered.
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------
1 1 28 52428800 1 NO CURRENT 555067 30-OCT-13
2 1 26 52428800 1 NO INACTIVE 555052 30-OCT-13
3 1 27 52428800 1 NO INACTIVE 555055 30-OCT-13
SQL> alter database datafile 5 online;
alter database datafile 5 online
*
ERROR at line 1:
ORA-01113: file 5 needs media recovery if it was restored from backup, or END BACKUP if it was not
ORA-01110: data file 5: '/u01/app/oracle/oradata/ptod/zxy01.dbf'
SQL> recover datafile 5;
ORA-00279: change 554973 generated at 10/30/2013 23:28:26 needed for thread 1
ORA-00289: suggestion : /u01/prod_arch/1_24_829999096.dbf
ORA-00280: change 554973 for thread 1 is in sequence #24
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
cancel
Media recovery cancelled.
SQL> alter database datafile 5 online;
alter database datafile 5 online
*
ERROR at line 1:
ORA-01113: file 5 needs media recovery if it was restored from backup, or END BACKUP if it was not
ORA-01110: data file 5: '/u01/app/oracle/oradata/ptod/zxy01.dbf'
---下面用bbed来检查点信息：
BBED> info
File# Name Size(blks)
----- ---- ----------
1 /u01/app/oracle/oradata/ptod/system01.dbf 0
2 /u01/app/oracle/oradata/ptod/undotbs03.dbf 0
3 /u01/app/oracle/oradata/ptod/sysaux01.dbf 0
4 /u01/app/oracle/oradata/ptod/users01.dbf 0
5 /u01/app/oracle/oradata/ptod/zxy01.dbf 0
BBED> set file 5 block 1
FILE# 5
BLOCK# 1
BBED> p kcvfhckp
struct kcvfhckp, 36 bytes @484
struct kcvcpscn, 8 bytes @484
ub4 kscnbas @484 0x000877dd---数据文件头的SCN低4字节值
ub2 kscnwrp @488 0x0000
ub4 kcvcptim @492 0x317c161a
ub2 kcvcpthr @496 0x0001
union u, 12 bytes @500
struct kcvcprba, 12 bytes @500
ub4 kcrbaseq @500 0x00000018---数据文件当前写的redolog sequence。
ub4 kcrbabno @504 0x00000002---数据文件当前写的redolog的block号
ub2 kcrbabof @508 0x0010
ub1 kcvcpetb[0] @512 0x02
ub1 kcvcpetb[1] @513 0x00
ub1 kcvcpetb[2] @514 0x00
ub1 kcvcpetb[3] @515 0x00
ub1 kcvcpetb[4] @516 0x00
ub1 kcvcpetb[5] @517 0x00
ub1 kcvcpetb[6] @518 0x00
ub1 kcvcpetb[7] @519 0x00
因此我只需要把红色部分的信息改成与正常的数据文件的值一样，骗过oracle的检测。
BBED> set file 4 blcok 1
FILE# 4
BBED-00202: invalid parameter (blcok)
BBED> set file 4 block 1
FILE# 4
BLOCK# 1
BBED> p kcvfhckp
struct kcvfhckp, 36 bytes @484
struct kcvcpscn, 8 bytes @484
ub4 kscnbas @484 0x0008783b
ub2 kscnwrp @488 0x0000
ub4 kcvcptim @492 0x317c1711
ub2 kcvcpthr @496 0x0001
union u, 12 bytes @500
struct kcvcprba, 12 bytes @500
ub4 kcrbaseq @500 0x0000001c
ub4 kcrbabno @504 0x00000002
ub2 kcrbabof @508 0x0010
ub1 kcvcpetb[0] @512 0x02
ub1 kcvcpetb[1] @513 0x00
ub1 kcvcpetb[2] @514 0x00
ub1 kcvcpetb[3] @515 0x00
ub1 kcvcpetb[4] @516 0x00
ub1 kcvcpetb[5] @517 0x00
ub1 kcvcpetb[6] @518 0x00
ub1 kcvcpetb[7] @519 0x00
BBED> d /v offset 484 count 16
File: /u01/app/oracle/oradata/ptod/users01.dbf (4)
Block: 1 Offsets: 484 to 499 Dba:0x01000001
-------------------------------------------------------
3b780800 0000af76 11177c31 01008e00 l ;x....|1....
<16 bytes per line>
BBED> set file 5 block 1
FILE# 5
BLOCK# 1
BBED> modify /x 3b7808 offset 484
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
File: /u01/app/oracle/oradata/ptod/zxy01.dbf (5)
Block: 1 Offsets: 484 to 499 Dba:0x01400001
------------------------------------------------------------------------
3b780800 0000af76 1a167c31 01008e00
<32 bytes per line>
BBED> d /v offset 484 count 16
File: /u01/app/oracle/oradata/ptod/zxy01.dbf (5)
Block: 1 Offsets: 484 to 499 Dba:0x01400001
-------------------------------------------------------
3b780800 0000af76 1a167c31 01008e00 l ;x....|1....
<16 bytes per line>
BBED> modify /x 18 offset 500
File: /u01/app/oracle/oradata/ptod/zxy01.dbf (5)
Block: 1 Offsets: 500 to 515 Dba:0x01400001
------------------------------------------------------------------------
18000000 02000000 10000000 02000000
<32 bytes per line>
BBED> sum apply
Check value for File 5, Block 1:
current = 0x9989, required = 0x9989
BBED> exit
----在查看SCN的情况，试着recover
SQL> select file#,checkpoint_change# from v$datafile;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 555687
2 555687
3 555687
4 555687
5 554973
SQL> select file#,checkpoint_change# from v$datafile_header;
FILE# CHECKPOINT_CHANGE#
---------- ------------------
1 555687
2 555687
3 555687
4 555687
5 555067
SQL> alter database datafile 5 online;
alter database datafile 5 online
*
ERROR at line 1:
ORA-01113: file 5 needs media recovery if it was restored from backup, or END BACKUP if it was not
ORA-01110: data file 5: '/u01/app/oracle/oradata/ptod/zxy01.dbf'
SQL> recover datafile 5;
Media recovery complete.
SQL> alter database datafile 5 online;
Database altered.
成功online数据文件5！
非归档数据文件offline的恢复的更多相关文章
- 表空间与数据文件Offline,online的区别
首先明确,表空间与数据文件的关系:Oracle数据库表空间有两种,一种smallfile小文件表空间(默认),另一种bigfile大文件表空间: 默认表空间与数据文件的关系:允许一对多的处理方式,一个 ...
- 非系统数据文件损坏，rman备份恢复
实验前提:已经做好备份. SQL> col file_name for a50select file_id,file_name from dba_data_files; FILE_ID FILE ...
- linux删除数据文件无备份恢复
参考 : http://www.lunar2013.com/2013/06/linux-%E8%AF%AF%E5%88%A0%E9%99%A4%E6%96%87%E4%BB%B6%E6%81%A2%E ...
- 数据文件offline 时oracle 干了那些事？
SQL> oradebug setmypid Statement processed. SQL> oradebug unlimit Statement processed. SQL> ...
- 1、通过CP数据文件的方式恢复MySQL 从库 启动后报错：Last_IO_Errno: 1236：A slave with the same server_uuid/server_id as this slave has connected to the master;
1.问题: MySQL从库中查看主从状态: show slave status\G,发现出现IO的报错: Last_IO_Errno: Last_IO_Error: Got fatal error f ...
- rman数据库恢复；关键/非重要文件、影像副本、控制文件、还原点、非归档、增量、新数据库、灾难性回复
运行全然恢复:在 ARCHIVELOG 模式下 丢失了系统重要数据文件: 假设某个数据文件丢失或损坏.且该文件属于 SYSTEM 或 UNDO 表空间,请运行下面步骤: 1. 实例可能会也可能不会自己 ...
- 测试Oracle 11gr2 RAC 非归档模式下，offline drop数据文件后的数据库的停止与启动测试全过程
测试Oracle 11gr2 RAC 非归档模式下,offline drop数据文件后的数据库的停止与启动测试全过程 最近系统出现问题,由于数据库产生的日志量太大无法开启归档模式,导致offline的 ...
- 【Oracle】非RMAN恢复数据文件、控制文件
实验环境:OEL 5.6 oracle 11g(11.2.0.4.0) 注意: system表空间数据文件不能在线recover,需要启动到mount状态再recover: undo表空间数据文件可以 ...
- 05 使用bbed跳过归档恢复数据文件
5 使用BBED跳过归档 在归档模式下,缺失了一部分的归档日志文件,对数据文件进行恢复 1 开启归档 --shutdown immediate --startup mount --alter data ...
随机推荐
- bzoj 1856 卡特兰数
复习了一下卡特兰数.. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #d ...
- Maven下载安装步骤
Maven下载安装步骤 1.下载maven 进入Maven官网的下载页面:http://maven.apache.org/download.cgi,如下图所示: 选择当前最新版本:"apac ...
- Https 请求工具(put,post,get)
package com.util; /** * @Description: 类描述 * @author 作者 ll E-mail:80002132@sf-express.com * @version ...
- 2017 计蒜之道 初赛 第五场 B. UCloud 的安全秘钥（简单）
暴力. 暴力枚举$S$串的每一个长度为$m$的子串,排序判断即可. #include <iostream> #include <cstdio> #include <cst ...
- Django+Nginx+uwsgi搭建自己的博客（三）
(本来打算在这篇博文中介绍Users App的前端部分的,但写着写着就发现还需要铺垫很多东西才能把整个项目串的比较流畅些,因此这篇就继续介绍了后端的一些东西,前端的部分只好跳票到下一篇了-) 在上一篇 ...
- String 字符串补0
method1: 前提是你的长度已经确定!比如规定现实10位! - 优点: 不需要都是数字类型 String str_m = "123X"; String str =&q ...
- 请画出Servlet 2.2以上Web Application的基本目录结构
Java web工程下的webapp或WebContent就是工程的发布文件夹,发布时会把该文件夹发布到tomcat的webapps里. 一个web应用必须要有的目录文件如下: webapp/WebC ...
- Selenium快速入门（下）
Frame相关 import time from selenium import webdriver from selenium.common.exceptions import NoSuchElem ...
- [SDOI2015]约数个数和 --- 简单反演
求\(\sum\limits_{i=1}^{n}\sum\limits_{j=1}^{m}d(ij)\) 不知道怎么讲..... 首先考虑\(d(ij)\)究竟是什么 首先,很自然地想到,既然是求\( ...
- 1 Spring4 之环境搭建和HelloWorld
1 Spring 是什么? 具体描述 Spring: 轻量级:Spring 是非侵入性的- 基于 Spring 开发的应用中的对象可以不依赖于 Spring 的 API 依赖注入(DI --- dep ...