达梦数据库安装及卸载

　　因工作需要，安装过达梦数据库多次，本次写个文档，供参考。

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 1. 创建安装用户

#创建安装用户组 dinstall 
groupadd -g 12349 dinstall
#创建安装用户 dmdba 
useradd -u 12345 -g dinstall -m -d /home/dmdba -s /bin/bash dmdba
#初始化用户密码 
passwd dmdba

2. 设置Linux系统用户可以打开的最大的文件数

　　建议用户设置为 65536 以上或 unlimited(无限制)

[root@localhost ~]# vi /etc/security/limits.conf
dmdba soft nofile 65536
dmdba hard nofile 65536

3. 达梦数据库安装3.1 上传安装文件

　　将安装文件DMInstall.bin(安装镜像解压后的文件)上传至服务器。

　　文件可下载链接: https://pan.baidu.com/s/1t25yMKoOQ7KuhXacK70ZRw 提取码: 9wam 

3.2 切换用户

su - dmdba

3.3 命令行安装　

　　本文作为演示，安装路径选择默认路径/home/dmdba/dmdbms。实际应用数据库安装路径，建议选择挂载盘或者大容量路径作为安装路径。

[dmdba@ZWZF-CWY-LZY-12 upload]$ sh DMInstall.bin -i
Please select the installer's language (E/e:English C/c:Chinese) [E/e]:e
Extract install files.........
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 127946
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 4096
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

The max number of open files is too little, suggest to set 65536 or more to number of open files.

Welcome to DM DBMS Installer

Whether to input the path of Key File? (Y/y:Yes N/n:No) [Y/y]:n

Whether to Set The TimeZone? (Y/y:Yes N/n:No) [Y/y]:y
TimeZone:
[ 1]: GTM-12=West Date Line
[ 2]: GTM-11=Samoa
[ 3]: GTM-10=Hawaii
[ 4]: GTM-09=Alaska
[ 5]: GTM-08=Pacific(America and Canada)
[ 6]: GTM-07=Arizona
[ 7]: GTM-06=Central(America and Canada)
[ 8]: GTM-05=East(America and Canada)
[ 9]: GTM-04=Atlantic(America and Canada)
[10]: GTM-03=Brasilia
[11]: GTM-02=Middle Atlantic
[12]: GTM-01=Azores
[13]: GTM=Greenwich Mean Time
[14]: GTM+01=Sarajevo
[15]: GTM+02=Cairo
[16]: GTM+03=Moscow
[17]: GTM+04=AbuDhabi
[18]: GTM+05=Islamabad
[19]: GTM+06=Dakar
[20]: GTM+07=BangKok,Hanoi
[21]: GTM+08=China
[22]: GTM+09=Seoul
[23]: GTM+10=Guam
[24]: GTM+11=Solomon
[25]: GTM+12=Fiji
[26]: GTM+13=Nukualofa
[27]: GTM+14=Kiribati
Please Select the TimeZone [21]:21

Installation Type:
1 Typical
2 Server
3 Client
4 Custom
Please Input the number of the Installation Type [1 Typical]:1
Require Space: 1602M

Please Input the install path [/home/dmdba/dmdbms]:
Available Space:30G
Please Confirm the install path(/home/dmdba/dmdbms)? (Y/y:Yes N/n:No) [