检查的时候，报包依赖错误，解决办法
yum install libaio-0.3.109-13.el7.i686
yum install libstdc++.so.6
yum install pam-devel.i686
yum install pam.i686

yum whatprovides package-name

1.DBT3514W  The db2prereqcheck utility failed to find the following 32-bit library file: "libstdc++.so.6".
解决方案：yum install libstdc++.so.6

2.DBT3514W  The db2prereqcheck utility failed to find the following 32-bit library file: "/lib/libpam.so*"
解决方案：yum install pam-devel.i686
          yum install pam.i686

3.DBT3507E  The db2prereqcheck utility failed to find the following package or file: "sg3_utils".
解决方案：yum install sg3_utils-*

4. Required minimum version for "ksh": "20100621"
解决方案：yum install ksh*

解决完包依赖，顺利完成安装
创建用户和组
groupadd db2grp
groupadd db2fgrp
groupadd dasadm
useradd -m -g db2grp -d /home/db2inst1 -s /bin/bash db2inst1
useradd -m -g db2fgrp -d /home/db2fenc -s /bin/bash db2fenc
useradd -m -g dasadm -d /home/dasusr -s /bin/bash dasusr

创建实例
./dascrt -u dasusr
./db2icrt -p 50000 -u db2fenc db2inst1
./db2iauto -off db2inst1
db2set DB2COMM=tcpip
db2stop
db2start