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DB2 安装前需要修改配置内核参数, 修改 /etc/sysctl.conf。shmall 默认是 8G,建议将此参数设置为 DB2 服务器物理内存的 90%,如果内存是 16G,就是 (16*0.9*1024*1024)/4=3774873, 当前环境的物理内存是 2G,也就是 (2*0.9*1024*1024)/4=471859
shmmax 建议和系统物理内存相等,在 64 位系统上必须至少设置为 1G,即 1073741824
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.msgmni = 1024
kernel.shmmax = 2147483648
kernel.shmall = 471859
kernel.sem = 250 256000 32 1024
kernel.randomize_va_space = 0
创建 libpam.so 软链接,具体参考 IBM DB2 解决方案
IC87092: DB2PREREQCHECK GIVES WARNING “THE 32-BIT LIBRARY FILE LIBPAM.SO IS NOT FOUND ON THE SYSTEM.” WHEN THE REQUIRED LIBPAM.SO.0 EXIST
[root@db2test server]# ln -s /lib/libpam.so.0.81.5 /lib/libpam.so
安装 DB2 软件
[root@db2test server]# ./db2setup
DBI1190I db2setup is preparing the DB2 Setup wizard which will guide
you through the program setup process. Please wait.
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