DB2 4节点DPF环境搭建；循环日志修改为归档日志方式 .

环境：AIX5.1 DB2 V8.2 是个测试环境，有机会安装，做个记录

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DB2 介质已经安装完成，只需要创建实例，建库

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***************DB2 4节点DPF环境搭建***********

一：用户创建

1. mkgroup id=2100 db2iadm2

2. mkgroup id=2101 db2fadm2

3. mkuser id=1004 pgrp=db2iadm2 groups=db2iadm2 home=/home/db2inst2 db2inst2

passwd db2inst2

pwdadm -f NOCHECK db2inst2

4. mkuser id=1003 pgrp=db2fadm2 groups=db2fadm2 home=/home/db2fenc2 db2fenc2

passwd db2fenc2

pwdadm -f NOCHECK db2fenc2

二：实例创建

5.创建实例

root用户-> ./db2icrt -a server -u db2fenc2 db2inst2

具体是：

***/usr/opt/db2_08_01/instance# ./db2icrt -a server -u db2fenc2 db2inst2

DBI1070I Program db2icrt completed successfully.

实例创建成功！

6.设置一些DB2环境变量

db2set DB2COMM=TCPIP

db2set DB2COUNTRY=86

db2set DB2CODEPAGE=1386

db2set DB2_USE_IOCP=ON

db2set DB2_ANTIJOIN=YES

db2set DB2_PARALLEL_IO=*

db2set DB2_EVALUNCOMMITTED=ON

7.为实例配置TCP/IP通信

db2cdb2inst2 61000/tcp 添加到： /etc/services

切换到db2inst2用户：

db2inst2-> db2 update dbm cfg using SVCENAME db2cdb2inst2

db2inst2-> db2start

db2inst2-> db2 attach to db2inst2

db2inst2-> db2 get dbm cfg show detail | grep SVCENAME

db2inst2-> db2stop

8.添加多分区通信条目到：/etc/services

DB2_db2inst2 60005/tcp

DB2_db2inst2_1 60006/tcp

DB2_db2inst2_2 60007/tcp

DB2_db2inst2_END 60008/tcp

注意：端口号不要重复

9.修改~/sqllib/db2nodes.cfg： 文件$hostname是实际主机名

0 $hostname 0

1 $hostname 1

2 $hostname 2

3 $hostname 3

10.修改~/.rhosts文件

$hostnam db2inst2

11.创建sample数据库

db2sampl

数据库创建成功。

*************循环日志修改为归档日志方式****************

创建归档日志存储路径：

mkdir -p /home/db2inst2/db2inst2/NODE0000/SQL00001/SQLOGDIR/archivelog/

mkdir -p /home/db2inst2/db2inst2/NODE0001/SQL00001/SQLOGDIR/archivelog/

mkdir -p /home/db2inst2/db2inst2/NODE0002/SQL00001/SQLOGDIR/archivelog/

mkdir -p /home/db2inst2/db2inst2/NODE0003/SQL00001/SQLOGDIR/archivelog/

修改归档日志方式(循环-->归档)：

db2 update db cfg for sample using LOGARCHMETH1 'DISK:/home/db2inst2/db2inst2/NODE0000/SQL00001/SQLOGDIR/archivelog/'

export DB2NODE=1

db2 termiante

db2 update db cfg for sample using LOGARCHMETH1 'DISK:/home/db2inst2/db2inst2/NODE0001/SQL00001/SQLOGDIR/archivelog/'

export DB2NODE=2

db2 termiante

db2 update db cfg for sample using LOGARCHMETH1 'DISK:/home/db2inst2/db2inst2/NODE0002/SQL00001/SQLOGDIR/archivelog/'

export DB2NODE=3

db2 termiante

db2 update db cfg for sample using LOGARCHMETH1 'DISK:/home/db2inst2/db2inst2/NODE0003/SQL00001/SQLOGDIR/archivelog/'

export DB2NODE=0

db2 termiante

进行验证：db2_all db2 get db cfg for sample|grep -i LOGARCHMETH1|grep -v LOGARCHOPT1|more

First log archive method (LOGARCHMETH1) = DISK:/home/db2inst2/db2inst2/NODE0000/SQL00001/SQLOGDIR/archivelog/

First log archive method (LOGARCHMETH1) = DISK:/home/db2inst2/db2inst2/NODE0001/SQL00001/SQLOGDIR/archivelog/

First log archive method (LOGARCHMETH1) = DISK:/home/db2inst2/db2inst2/NODE0002/SQL00001/SQLOGDIR/archivelog/

First log archive method (LOGARCHMETH1) = DISK:/home/db2inst2/db2inst2/NODE0003/SQL00001/SQLOGDIR/archivelog/

连接数据库

db2 connect to sample 报如下错误：

SQL1116N A connection to or activation of database "SAMPLE" cannot be made

because of BACKUP PENDING. SQLSTATE=57019

出现错误消息的原因是，日志模式已经从循环更改为归档，并且需要执行完全数据库备份。

数据库处于循环日志模式时执行的备份并不充分，因此当切换模式后需要执行新备份。

db2_all "db2 backup database sample comress"

db2 connect to sample 提示连接成功！

验证归档日志是否切换成功，采用在线备份的方式

db2_all "db2 backup db sample online compress"

执行成功出现4个备份介质

SAMPLE.0.db2inst2.NODE0000.CATN0000.20121012112303.001

SAMPLE.0.db2inst2.NODE0001.CATN0000.20121012112321.001

SAMPLE.0.db2inst2.NODE0002.CATN0000.20121012112337.001

SAMPLE.0.db2inst2.NODE0003.CATN0000.20121012112352.001