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

android开发系列之数据存储
在我们的android实际开发过程,必不可少的一种行为操作对象就是数据.有些数据,对于用户而言是一次性的,这就要求我们每次进到App的时候,都需要去刷新数据.有些数据,对于用户而言又是具有一定时效性的 ...
分区容量大于16TB的格式化
File systems do have limits. Thats no surprise. ext3 had a limit at 16 TB file system size. If you n ...
jsp获取web.xml 里的配置项
ServletContext servletContext = request.getSession().getServletContext(); String titl ...
在dev目录创建一个字符设备驱动的流程
1.struct file_operations 字符设备文件接口 1: static int mpu_open(struct inode *inode, struct file *file) 2: ...
Eclipse工程前面有个红色的感叹号的解决办法
今天从SVN下载下工程之后,编译完,发现有两个工程有个红色的感叹号,一直没找到什么原因,问百度老师,发现问题的解决办法了. 1.先在控制台上点击Problems 如果控制台没有Problems,点击工 ...
TP框架部分---空控制器
<?php namespace Admin\Controller; use Think\Controller; class DengLuController extends Controller ...
用 Apache POI 读取 XLSX 数据
最近因为项目的原因,需要从一些 Microsoft Office Excel 文件读取数据并加载到数据库. Google了一下方法,发现其实可以用的 Java 第三方库很多,最著名的是 Apache ...
sed 简单用法
sed的一个简单用法: eg:在某一个文件中的一个aaa字段前后添加某些字段. 在aaa前面添加字段:sed -ne 's/aaa/&HELLO/p' test 输出结果:aaaHELLO 在 ...
IDEA tomcat三步实现热部署
IDEA tomcat三步实现热部署添加Artifacts选项添加Artifacts选项,XXXwar 和 XXXwar exploded二选一,若要热部署须选后者. 设置tomcat部署方案设 ...
Java AQS详解(转)
原文地址一.概述谈到并发,不得不谈ReentrantLock:而谈到ReentrantLock,不得不谈AbstractQueuedSynchronizer(AQS)! 类如其名,抽象的队列式的同 ...

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