AIX 新装系统参数检查与修改

Steps for System Configuration Check

1. 最大用户进程数 16384

smitty system

命令# lsattr -E -l sys0 -a maxuproc用于显示该值

命令# chdev -l sys0 -a maxuproc=16384用于修改该值

2. 系统时间 BEIJING，无夏时制 割接前对表

check current time

date

check time zone

echo $TZ

3. AIO

MINIMUM number of servers 10 数据库主机

MAXIMUM number of servers per cpu 20 数据库主机

smitty aio

用于修改该值的命令

chdev -l aio0 -Pa minservers=10

chdev -l aio0 -Pa maxservers=20

用于显示该值的命令

lsattr -El aio0 -a minservers

lsattr -El aio0 -a maxservers

4. no

udp_sendspace 1048576 数据库主机

udp_recvspace 1048576 数据库主机

check the network options:

no -a |grep udp_sendspace

no -a |grep udp_recvspace

correct the network options:

no -p -o udp_sendspace=1048576

no -p -o udp_recvspace=1048576

5. vmo

minfree 2048

maxfree 16384

minperm% 5

maxperm% 10

maxclient% 10

strict_maxperm 1

check the virtual machine options:

vmo -a |grep minfree

vmo -a |grep maxfree

vmo -a |grep minperm%

vmo -a |grep maxperm%

vmo -a |grep maxclient%

vmo -a |grep strict_maxperm

correct the network options:

vmo -p -o maxfree=16384

vmo -p -o minfree=2048

vmo -p -o maxperm%=10

vmo -p -o minperm%=5

vmo -p -o maxclient%=10

vmo -p -o strict_maxperm=1

6. limit

default "default:

fsize = -1

core = 2097151

cpu = -1

data = -1

rss = -1

stack = -1

nofiles = 2000"

oracle "oracle:

fsize = -1

cpu = -1

data = -1

stack = -1

core = 2097151

rss = -1

nofiles = -1

fsize_hard = -1

cpu_hard = -1

data_hard = -1

stack_hard = -1

rss_hard = -1

nofiles_hard = -1"

check the limitation settings:

more /etc/security/limits

correct the limitation settings:

vi /etc/security/limits

7. swap 内存小于等于16G的，同内存大小，大于16G的配置16G，不镜像

check the memory size:

lsattr –El mem0

check the physical partition size:

lsvg rootvg

check the current paging space size:

lsps –a

change the existed paging space size

smitty chps

create new paing space

smitty mkps

删除ps:

swapoff /dev/paging00

smitty rmlv

去除镜像：smitty rmlvcopy

8. rootvg镜像

/oracle

/tivoli

/var/cics_servers

/var/cics_regions

/washome

check the mirror setting of logic volume:

lsvg –l rootvg

add mirror to logic volume:

smitty mklvcopy

DONE