安装DB2前，需要修改Solaris内核参数

安装DB2前，需要修改Solaris内核参数。

DB2 提供了一个叫做 db2osconf 的工具。该工具根据系统的大小对内核参数的值给出建议。 

db2osconf  的参数

Usage:-c                 # Client only-f                 # Compare to current-h                 # Help screen-l                 # List current-m <mem in GB>     # Specify memory in GB-n <num CPUs>      # Specify number of CPUs-p <perf level>    # Msg Q performance level (0-3)-s <scale factor>  # Scale factor (1-3)-t <threads>       # Number of threads

查看系统对内核参数的建议值

cd  /opt/IBM/db2/V8.1/bin/

./db2osconf

内核参数

set msgsys:msginfo_msgmni = 2560set semsys:seminfo_semmni = 3072set shmsys:shminfo_shmmax = 2862489600set shmsys:shminfo_shmmni = 3072

Total kernel space for IPC:0.42MB (shm) + 1.12MB (sem) + 1.45MB (msg) == 3.00MB (total)

编辑内核参数

vi /etc/system

* Recommended kernel parameters for "DB2 for Solaris"* for systems with more than 512MB of physical memory*set msgsys:msginfo_msgmax = 65535set msgsys:msginfo_msgmnb = 65535set msgsys:msginfo_msgmni = 2560set msgsys:msginfo_msgtql = 2560

set semsys:seminfo_semmni = 3072set semsys:seminfo_semmns = 6452set semsys:seminfo_semmnu = 3072set semsys:seminfo_semume = 240

set shmsys:shminfo_shmmax = 3753905356 //修改为 2862489600 set shmsys:shminfo_shmmni = 3072set shmsys:shminfo_shmseg = 240

只需修改一处，其它的参数不需要修改。

然后保存system文件，重启计算机。