dataguard 下主备 online redo 与 standby redo log resize 重建

环境说明：本实验环境是一个节点的rac + 单节点 asm dg database 与 grid 版本是 11.2.0.4 。
提别提醒如果是多节点集群，操作时需要特别注意 thread 。

一. 主库操作

1.1 查看redo 信息
SQL> col member for a60
SQL> select group#,type, member from v$logfile;

GROUP# TYPE MEMBER
---------- ------- --------------------------------------------------------
3 ONLINE +DATA/devdb/onlinelog/group_3.263.936769395
3 ONLINE +FLASH/devdb/onlinelog/group_3.259.936769401
2 ONLINE +DATA/devdb/onlinelog/group_2.262.936769383
2 ONLINE +FLASH/devdb/onlinelog/group_2.258.936769389
1 ONLINE +DATA/devdb/onlinelog/group_1.261.936769373
1 ONLINE +FLASH/devdb/onlinelog/group_1.257.936769379
4 STANDBY +DATA/devdb/onlinelog/group_4.267.938494955
4 STANDBY +FLASH/devdb/onlinelog/group_4.278.938494963
5 STANDBY +DATA/devdb/onlinelog/group_5.268.938494969
5 STANDBY +FLASH/devdb/onlinelog/group_5.279.938494975
6 STANDBY +DATA/devdb/onlinelog/group_6.269.938494981
6 STANDBY +FLASH/devdb/onlinelog/group_6.280.938494985
7 STANDBY +DATA/devdb/onlinelog/group_7.270.938495005
7 STANDBY +FLASH/devdb/onlinelog/group_7.281.938495013

14 rows selected.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES INACTIVE 50
2 1 YES INACTIVE 50
3 1 NO CURRENT 50

1.2 修改standby redo

SQL> alter database drop logfile group 4;

Database altered.

SQL> alter database drop logfile group 5;

Database altered.

SQL> alter database drop logfile group 6;

Database altered.

SQL> alter database drop logfile group 7;

Database altered.

SQL> select group#,type, member from v$logfile;

GROUP# TYPE MEMBER
---------- ------- ------------------------------------------------
3 ONLINE +DATA/devdb/onlinelog/group_3.263.936769395
3 ONLINE +FLASH/devdb/onlinelog/group_3.259.936769401
2 ONLINE +DATA/devdb/onlinelog/group_2.262.936769383
2 ONLINE +FLASH/devdb/onlinelog/group_2.258.936769389
1 ONLINE +DATA/devdb/onlinelog/group_1.261.936769373
1 ONLINE +FLASH/devdb/onlinelog/group_1.257.936769379

6 rows selected.

添加standby redo

SQL> alter database add standby logfile thread 1 group 4 size 60m,group 5 size 60m,group 6 size 60m,group 7 size 60m;

Database altered.

SQL> select group#,type, member from v$logfile;

GROUP# TYPE MEMBER
---------- ------- --------------------------------------------------
3 ONLINE +DATA/devdb/onlinelog/group_3.263.936769395
3 ONLINE +FLASH/devdb/onlinelog/group_3.259.936769401
2 ONLINE +DATA/devdb/onlinelog/group_2.262.936769383
2 ONLINE +FLASH/devdb/onlinelog/group_2.258.936769389
1 ONLINE +DATA/devdb/onlinelog/group_1.261.936769373
1 ONLINE +FLASH/devdb/onlinelog/group_1.257.936769379
4 STANDBY +DATA/devdb/onlinelog/group_4.267.938747301
4 STANDBY +FLASH/devdb/onlinelog/group_4.278.938747305
5 STANDBY +DATA/devdb/onlinelog/group_5.268.938747309
5 STANDBY +FLASH/devdb/onlinelog/group_5.279.938747313
6 STANDBY +DATA/devdb/onlinelog/group_6.269.938747317
6 STANDBY +FLASH/devdb/onlinelog/group_6.280.938747321
7 STANDBY +DATA/devdb/onlinelog/group_7.270.938747325
7 STANDBY +FLASH/devdb/onlinelog/group_7.281.938747327

14 rows selected.

1.3 修改Online redo

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES INACTIVE 50
2 1 YES INACTIVE 50
3 1 NO CURRENT 50

先处理inactive，它表示已经完成规定的，可以删除。

SQL> alter database drop logfile group 1;

Database altered.

注意：至少要2个redo组

SQL> alter database add logfile thread 1 group 1 size 60m;

Database altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES UNUSED 60
2 1 YES INACTIVE 50
3 1 NO CURRENT 50

SQL> alter database drop logfile group 2;

Database altered.

SQL> alter database add logfile thread 1 group 2 size 60m;

Database altered.

SQL> alter system switch logfile;

System altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 NO CURRENT 60
2 1 YES UNUSED 60
3 1 YES ACTIVE 50

说明：ACTIVE 表示正在归档

等一会后

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 NO CURRENT 60
2 1 YES UNUSED 60
3 1 YES INACTIVE 50

SQL> alter database drop logfile group 3;

Database altered.

SQL> alter database add logfile thread 1 group 3 size 60m;

Database altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 NO CURRENT 60
2 1 YES UNUSED 60
3 1 YES UNUSED 60
OK,至此，主库完成。

二. 备库操作

2.1 查看信息
SQL> col member for a60
SQL> select group#,type, member from v$logfile;

GROUP# TYPE MEMBER
---------- ------- --------------------------------------------------
3 ONLINE +DATA/phydb/onlinelog/group_3.268.938177101
3 ONLINE +FLASH/phydb/onlinelog/group_3.262.938177103
2 ONLINE +DATA/phydb/onlinelog/group_2.267.938177097
2 ONLINE +FLASH/phydb/onlinelog/group_2.261.938177099
1 ONLINE +DATA/phydb/onlinelog/group_1.266.938177093
1 ONLINE +FLASH/phydb/onlinelog/group_1.260.938177095
4 STANDBY +DATA/phydb/onlinelog/group_4.262.938176937
4 STANDBY +FLASH/phydb/onlinelog/group_4.256.938176939
5 STANDBY +DATA/phydb/onlinelog/group_5.263.938176941
5 STANDBY +FLASH/phydb/onlinelog/group_5.257.938176943
6 STANDBY +DATA/phydb/onlinelog/group_6.264.938176945
6 STANDBY +FLASH/phydb/onlinelog/group_6.258.938176945
7 STANDBY +DATA/phydb/onlinelog/group_7.265.938176947
7 STANDBY +FLASH/phydb/onlinelog/group_7.259.938176949

14 rows selected.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES CURRENT 50
2 1 YES CLEARING 50
3 1 YES CLEARING 50

2.2 处理standby redo

对于standby 上redo的处理之前，我们要先停掉redo 的apply：否则报错 ORA-01156

SQL> alter database recover managed standby database cancel;

SQL> alter database drop logfile group 4;

Database altered.

SQL> alter database drop logfile group 5;

Database altered.

SQL> alter database drop logfile group 6;

Database altered.

SQL> alter database drop logfile group 7;

Database altered.

SQL> alter database add standby logfile thread 1 group 4 size 60m,group 5 size 60m,group 6 size 60m,group 7 size 60m;

Database altered.

SQL> select group#,type, member from v$logfile;

GROUP# TYPE MEMBER
---------- ------- -------------------------------------------------
3 ONLINE +DATA/phydb/onlinelog/group_3.268.938177101
3 ONLINE +FLASH/phydb/onlinelog/group_3.262.938177103
2 ONLINE +DATA/phydb/onlinelog/group_2.267.938177097
2 ONLINE +FLASH/phydb/onlinelog/group_2.261.938177099
1 ONLINE +DATA/phydb/onlinelog/group_1.266.938177093
1 ONLINE +FLASH/phydb/onlinelog/group_1.260.938177095
4 STANDBY +DATA/phydb/onlinelog/group_4.265.938720451
4 STANDBY +FLASH/phydb/onlinelog/group_4.259.938720453
5 STANDBY +DATA/phydb/onlinelog/group_5.264.938720457
5 STANDBY +FLASH/phydb/onlinelog/group_5.258.938720463
6 STANDBY +DATA/phydb/onlinelog/group_6.263.938720465
6 STANDBY +FLASH/phydb/onlinelog/group_6.257.938720469
7 STANDBY +DATA/phydb/onlinelog/group_7.262.938720471
7 STANDBY +FLASH/phydb/onlinelog/group_7.256.938720475

14 rows selected.

2.3 处理online redo

先将standby_file_management设为手动：

SQL> alter system set standby_file_management=manual;
System altered.

SQL> alter database clear logfile group 2;

Database altered.

SQL> alter database drop logfile group 2;

Database altered.

SQL> alter database add logfile thread 1 group 2 size 60m;

Database altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES CURRENT 50
2 1 YES UNUSED 60
3 1 YES CLEARING 50

SQL> alter database clear logfile group 3;

Database altered.

SQL> alter database drop logfile group 3;

Database altered.

SQL> alter database add logfile thread 1 group 3 size 60m;

Database altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES CURRENT 50
2 1 YES UNUSED 60
3 1 YES UNUSED 60

SQL> alter database recover managed standby database disconnect from session;

Database altered.

SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT='AUTO';

System altered.

-- 到主库手动切换几次redo

SQL> alter system switch logfile;

System altered.

SQL> alter system switch logfile;

System altered.

--查看备库的redo：

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES CLEARING 50
2 1 YES CLEARING 60
3 1 YES CURRENT 60
SQL> alter database recover managed standby database cancel;

Database altered.

SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT='MANUAL';

System altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

Database altered.

SQL> alter database drop logfile group 1;

Database altered.

SQL> alter database add logfile thread 1 group 1 size 60m;

Database altered.

SQL> select group#,thread#,archived,status, bytes/1024/1024 from v$log;

GROUP# THREAD# ARC STATUS BYTES/1024/1024
---------- ---------- --- ---------------- ---------------
1 1 YES UNUSED 60
2 1 YES CLEARING 60
3 1 YES CURRENT 60

SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT='AUTO';

System altered.

SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

主库测试：

SQL> alter system switch logfile;

System altered.

SQL> alter system switch logfile;

System altered.

SQL> select max(sequence#) from v$archived_log;

MAX(SEQUENCE#)
--------------
77

备库查看是否同步：

SQL> select sequence#,applied from v$archived_log;
。。。。。
76 YES
77 IN-MEMORY

69 rows selected.

一切正常。

dataguard 下主备 online redo 与 standby redo log resize 重建的更多相关文章

Oracle Dataguard HA (主备,灾备)方案部署调试
包括: centos6.5 oracle11gR2 DataGuard安装 dataGuard 主备switchover角色切换数据同步测试 <一,>DG数据库数据同步测试1,正常启动主 ...
DG_Oracle DataGuard Failover主备节点切换（案例）
2014-03-09 Created By BaoXinjian Thanks and Regards
DG_Oracle DataGuard Switchover主备节点切换（案例）
2014-06-09 Created By BaoXinjian Thanks and Regards http://wenku.baidu.com/view/dc9f00d349649b6648d7 ...
24 | MySQL是怎么保证主备一致的？
在前面的文章中,我不止一次地和你提到了binlog,大家知道binlog可以用来归档,也可以用来做主备同步,但它的内容是什么样的呢?为什么备库执行了binlog就可以跟主库保持一致了呢?今天我就正式地 ...
OceanBase中主备Rootserver如何管理切换
主RootServer会不断给备RootServer发送lease.被RootServer收到该lease后会保存到几个变量中: int ObCheckRunnable::renew_lease(co ...
24 mysql怎么保证主备一致
Mysql主备的基本原理在状态1中,客户端直接访问节点A,而节点B只是备库,只是将A的binlog全部同步过来并应用到本地,这样可以保持节点B和节点A的数据是相同的. 当需要切换的时候,就变成状态2 ...
(摘)DataGuard物理standby管理 - 主备切换
DataGuard物理standby管理 - 主备切换 Dataguard的切换分为两种,switchover和failover. switchover一般用于数据库或硬件升级,这时只需要较短时间中断 ...
DG_Oracle DataGuard Primary/Standby物理主备节点安装实践（案例）
2014-09-09 Created By BaoXinjian
GoldenGate 传统抽取进程随 DataGuard 主备快速切换的方案（ADG 模式）
环境描述: 1.节点描述节点 IP 节点描述 11.6.76.221 GG 抽取端 / DG 节点,数据库版本号为 Oracle-11.2.0.3,与 11.6.76.222 组成 DataGuar ...

随机推荐

Bootstrp--一个导航面板切换的实用例子
 <ul class="nav nav-tabs nav-stacked" role="tablist"> &l ...
dede内容页调用点击数
<script src="{dede:field name='phpurl'/}/count.php?view=yes&aid={dede:field name='id'/} ...
C#中判断某个值是否存在于枚举
我有一个枚举类型: #region -酒的种类- public enum WineType { 白酒 = 3, 葡萄酒 = 4, 洋酒 = 5, 老年陈酒 = 16, 啤酒 = 17 } #endre ...
oracle中v$sga_target_advice的用途
v$sga_target_advice:该视图可用于建议SGA大小设置是否合理. SELECT a.sga_size,--sga期望大小 a.sga_size_factor,-- ...
解决UICollectionView的Cell复用引起的布局混乱问题
解决UICollectionView的Cell复用引起的布局混乱问题问题复现.gif 查了一下度娘发现没有好的解决办法,于是发动自己的聪明才智,终于找到如下解决办法(充分证明了自己动手丰衣足食啊
iOS开发两个内存错误的一般处理方法
本文转载至 http://blog.sina.com.cn/s/blog_a843a8850101dxlj.html 由于iOS5.0之前没有自动应用计数机制,也没有Java那样的垃圾回收功能.我们都 ...
COGS1532. [IOI2001]移动电话
1532. [IOI2001]移动电话 ★☆ 输入文件:mobilephones.in 输出文件:mobilephones.out 简单对比时间限制:5 s 内存限制:256 MB [ ...
【BZOJ4653】[Noi2016]区间双指针法+线段树
[BZOJ4653][Noi2016]区间 Description 在数轴上有 n个闭区间 [l1,r1],[l2,r2],...,[ln,rn].现在要从中选出 m 个区间,使得这 m个区间共同包含 ...
ThreadLocal的简单使用
package com.thread; public class ThreadLocalTest { public static void main(String[] args) { final Pe ...

dataguard 下主备 online redo 与 standby redo log resize 重建

dataguard 下主备 online redo 与 standby redo log resize 重建的更多相关文章

随机推荐

热门专题