db2 v11 安装测试

一、准备环境：

介质： db2 v11 redhat7.

安装所需软件包 libstdc++.so.
yum install -y libstdc++

修改/etc/hosts如下配置：

#vi /etc/hosts

127.0.0.1    localhost

修改系统内核参数

# vi /etc/sysctl.conf

kernel.shmmax =     --设置为物理内存的一半或稍大

kernel.shmall = 

kernel.shmmni = 

kernel.sem =    

fs.file-max = 

net.ipv4.ip_local_port_range =  65000

net.core.rmem_default=262144

net.core.rmem_max=262144

net.core.wmem_default=262144

net.core.wmem_max=262144

二、安装DB2软件

root用户执行

df -h 确保空间大小满足条件

vi /etc/security/limits

除notice之外设置参数为-1

mkdir /tmp/db2v11

chown db2inst1:db2iadm1 /tmp/db2v11

上传介质

chmod -R 777 /tmp/db2v11

gzip -d product.tar.gz

tar xvf product.tar

安装前验证

./db2prereqcheck

安装

./db2_install

安装目录，选择推荐目录即可(可以修改目录，如果不修改/预留大小为6G)

Enter "help" to redisplay product names. --------------- 选择安装产品类型，这里选择SERVER
Do you want to install the DB2 pureScale Feature? [yes/no] ---------------- 选择是否安装pureScale功能，这里选择不安装

生成如下目录
/opt/ibm/db2/V11.

/tmp/生成install日志，查看并确认

三、创建Instance

. 创建DB2实例
    以下操作全部以root用户执行
    groupadd db2iadm1
    groupadd db2fadm1                    

    useradd db2inst1 -G db2iadm1
    passwd db2inst1
    Changing password for user db2inst1.
    New password: input your password
    Retype new password: retype input your password                    

    useradd db2fenc1 -G db2fadm1
    cd /opt/ibm/db2/V11.1/instance/
    ./db2icrt -a server -p  -u db2fenc1 db2inst1                    

    开放端口50000，以便用户可以访问
    firewall-cmd --zone=public --add-port=/tcp --permanent
    systemctl stop firewalld.service
    systemctl start firewalld.service            

2. 激活license
    以下操作全部以db2inst1用户执行
    查看license信息
    db2licm -l                                    

    license激活
    db2licm -a /usr/local/src/db2ese_c.lic

方式二 指定 用户ID和密码
创建用户和组
用户用途 用户名 用户组
实例所有者 db2inst1 db2iadm1
受防护的用户 db2fenc1 db2fadm1

# groupadd -g  db2iadm1

# groupadd -g  db2fadm1

# useradd -u  -g db2iadm1 -d /home/db2inst1 -m db2inst1

# useradd -u  -g db2fadm1 -d /home/db2fenc1 -m db2fenc1

# echo 'db2inst1' |passwd --stdin db2inst1

# echo 'db2fenc1' |passwd --stdin db2fenc1

#cd /opt/ibm/db2/V11.1/instance
#./db2icrt -a server -p 50000 -u db2fenc1 db2inst1  

The execution completed successfully.

For more information see the DB2 installation log at "/tmp/db2icrt.log.9503".
DBI1070I Program db2icrt completed successfully.

2. 激活license
    以下操作全部以db2inst1用户执行
    查看license信息
    db2licm -l                                    

    license激活
    db2licm -a /usr/local/src/db2ese_c.lic                                     

创建DB文件系统并赋权给用户db2inst1

# chown db2inst1:db2iadm1 /data

# chown db2inst1:db2iadm1 /db2log

# chown db2inst1:db2iadm1 /db2arch

四、配置并启动Instance

# /opt/ibm/db2/V11.1/instance/db2ilist

db2inst1

(1)  修改db2nodes.cfg

位置在instance用户的$HOME/sqllib/.文件格式是:

<logic port> <hostname> <logic port>     //主机名要与/etc/hosts 的主机名一致 或hostname命令查看

0 r201 0

1 r201 1

(2)  检查services文件（多节点配置自动生成多个服务端口）

vi  /etc/services    -G 跳到最后一行

#DB2c_db2inst1   50000/tcp      // 要与dbm SVCENAME一致

(3) 启动实例：  --切换到db2inst1用户

配置环境变量  --root用户和db2inst1用户

# vi ~/.bash_profile

$ vi ~/.bash_profile

./home/db2inst1/sqllib/db2profile  # 增加该行代码

# source ~/.bash_profile

$ source ~/.bash_profile

设置服务名称

$ db2 update dbm cfg using SVCENAME db2inst1

设置注册变量

$ db2set DB2COMM=tcpip

启动实例

$ db2start

五、创建DB

$ db2 "create db RESDB on /oradata4 using codeset UTF-8 territory cn"

DB20000I  The CREATE DATABASE command completed successfully.

批注：创建数据库时若为指定路径，将使用默认路径，数据库用户的家目录，如下查看：

$ db2 get dbm cfg | grep -i DFTDBPATH

 Default database path                       (DFTDBPATH) = /home/db2inst1

.参数调整

$ db2 connect to resdb

$ db2iauto -on db2inst1   --设置数据库实例开机自启动

9.1参数调整

$ db2 update dbm cfg using SVCENAME 9999 DFT_MON_BUFPOOL on DFT_MON_UOW on NUM_POOLAGENTS 4100

DB20000I  The UPDATE DATABASE MANAGER CONFIGURATION command completed successfully.

SQL1362W  One or more of the parameters submitted for immediate modification

were not changed dynamically. Client changes will not be effective until the

next time the application is started or the TERMINATE command has been issued.

Server changes will not be effective until the next DB2START command.

批注：需要重启数据库生效

9.2日志调整

--日志位置和大小调整

$ db2 update db cfg for RESDB using NEWLOGPATH /db2log

$ db2 update db cfg for RESDB using LOGARCHMETH1 disk:/db2arch

$ db2 update db cfg for RESDB using LOGFILSIZ 25600 LOGPRIMARY 13 LOGSECOND 12  CATALOGCACHE_SZ 2048 LOGBUFSZ 4096 UTIL_HEAP_SZ 10240 DB_MEM_THRESH 100 DLCHKTIME 5000 LOCKTIMEOUT 15

9.3其他参数调整

db2set DB2_PARALLEL_IO=*

db2set DB2_SKIPINSERTED=YES

db2set DB2_USE_ALTERNATE_PAGE_CLEANING=YES

db2set DB2_EVALUNCOMMITTED=YES

db2set DB2_ANTIJOIN=EXTEND

db2set DB2_SKIPDELETED=YES

db2set DB2CODEPAGE=1208

参数调整完毕，数据库重启：

$ db2stop

01/23/2017 13:48:24     0   0   SQL1025N  The database manager was not stopped because databases are still active.

SQL1025N  The database manager was not stopped because databases are still active.

$ db2 force application all

DB20000I  The FORCE APPLICATION command completed successfully.

DB21024I  This command is asynchronous and may not be effective immediately.

$ db2stop

01/23/2017 13:49:39     0   0   SQL1064N  DB2STOP processing was successful.

SQL1064N  DB2STOP processing was successful.

$ db2start

01/23/2017 13:50:13     0   0   SQL1063N  DB2START processing was successful.

SQL1063N  DB2START processing was successful.

此时需要调整/etc/security/limits.conf配置文件

db2list1  soft nofile 

db2inst1  hard nofile 

db2inst1  soft nproc  

db2inst1  hard nproc