一、查看系统I/O(对于Oracle数据库需启用异步I/O)
对于AIX6.1，默认异步I/O在有需求时，自动被激活，不需要配置。
[root@aix203 /]#ioo -a |grep aio
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aio_active =
0
aio_maxreqs =
65536
aio_maxservers =
30
aio_minservers =
3
aio_server_inactivity =
300
posix_aio_active =
0
posix_aio_maxreqs =
65536
posix_aio_maxservers =
30
posix_aio_minservers =
3
posix_aio_server_inactivity =
300
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二、配置节点间的主机信任关系：
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[root
@aix203
/]#cat /etc/hosts.equiv
aix203 root
aix204 root
aix203-vip root
aix204-vip root
aix203-priv root
aix204-priv root
aix203 oracle
aix204 oracle
aix203-vip oracle
aix204-vip oracle
aix203-priv oracle
aix204-priv oracle
[root
@aix203
/]#cat .rhosts
aix203 root
aix204 root
aix203-vip root
aix204-vip root
aix203-priv root
aix204-priv root
aix203 oracle
aix204 oracle
aix203-vip oracle
aix204-vip oracle
aix203-priv oracle
aix204-priv oracle
[oracle
@aix203
~]$cat .rhosts
aix203 root
aix204 root
aix203-vip root
aix204-vip root
aix203-priv root
aix204-priv root
aix203 oracle
aix204 oracle
aix203-vip oracle
aix204-vip oracle
aix203-priv oracle
aix204-priv oracle
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验证主机信任关系：
[oracle@aix203 ~]$rsh aix204 date
Tue Mar 15 16:18:47 CDT 2016
[oracle@aix203 ~]$rsh aix204-priv date
Tue Mar 15 16:18:50 CDT 2016
[oracle@aix204 ~]$rsh aix203 date
Tue Mar 15 16:17:12 CDT 2016
[oracle@aix204 ~]$rsh aix203-priv date
Tue Mar 15 16:18:26 CDT 2016
三、配置时间同步（NTP)
NTP SERVER：
[root@aix203 /]#cat /etc/ntp.conf
# Default NTP configuration file.
# Broadcast client, no authentication.
broadcastclient
driftfile /etc/ntp.drift
tracefile /etc/ntp.trace
server 127.127.1.0
NTP CLIENT:
[root@aix204 /]#cat /etc/ntp.conf
# Default NTP configuration file.
#
# Broadcast client, no authentication.
#
#broadcastclient
driftfile /etc/ntp.drift
tracefile /etc/ntp.trace
server 192.168.8.203
启动ntp services：
[root@aix203 /]#smit xntpd ；；启动ntp service
[root@aix203 /]#lssrc -ls xntpd
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Program name: /usr/sbin/xntpd
Version:
3
Leap indicator:
11
(Leap indicator is insane.)
Sys peer: no peer, system is insane
Sys stratum:
16
Sys precision:
-17
Debug/Tracing: DISABLED
Root distance:
0.000000
Root dispersion:
0.000000
Reference ID: no refid, system is insane
Reference time: no reftime, system is insane
Broadcast delay:
0.003906
(sec)
Auth delay:
0.000122
(sec)
System flags: bclient pll monitor filegen
System uptime:
5
(sec)
Clock stability:
0.000000
(sec)
Clock frequency:
0.000000
(sec)
Peer:
127.127.
1.0
flags: (configured)(refclock)
stratum:
3
, version:
3
our mode: client, his mode: server
Subsystem Group PID Status
xntpd tcpip
3604550
active
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四、配置node间私有网络传输参数
[root@aix203 /]#lsattr -El sys0 -a pre520tune
pre520tune disable Pre-520 tuning compatibility mode True
[root@aix203 /]#no -a |grep tcp
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hstcp =
0
tcp_bad_port_limit =
0
tcp_cwnd_modified =
0
tcp_ecn =
0
tcp_ephemeral_high =
65535
tcp_ephemeral_low =
32768
tcp_fastlo =
0
tcp_fastlo_crosswpar =
0
tcp_finwait2 =
1200
tcp_icmpsecure =
0
tcp_init_window =
0
tcp_inpcb_hashtab_siz =
24499
tcp_keepcnt =
8
tcp_keepidle =
14400
tcp_keepinit =
150
tcp_keepintvl =
150
tcp_limited_transmit =
1
tcp_low_rto =
0
tcp_maxburst =
0
tcp_mssdflt =
1460
tcp_nagle_limit =
65535
tcp_nagleoverride =
0
tcp_ndebug =
100
tcp_newreno =
1
tcp_nodelayack =
0
tcp_pmtu_discover =
1
tcp_recvspace =
16384
tcp_sendspace =
16384
tcp_tcpsecure =
0
tcp_timewait =
1
tcp_ttl =
60
tcprexmtthresh =
3
tcptr_enable =
0
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[root@aix203 /]#no -a |grep udp
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udp_bad_port_limit =
0
udp_ephemeral_high =
65535
udp_ephemeral_low =
32768
udp_inpcb_hashtab_siz =
24499
udp_pmtu_discover =
1
udp_recvspace =
42080
udp_sendspace =
9216
udp_ttl =
30
udpcksum =
1
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配置脚本：
[root@aix203 /]#cat chnet.sh
no -r -o ipqmaxlen=512
no -p -o rfc1323=1
no -p -o sb_max=1310720
no -p -o tcp_recvspace=65536
no -p -o tcp_sendspace=65536
no -p -o udp_recvspace=655360
no -p -o udp_sendspace=65536
[root@aix203 /]#sh chnet.sh
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Setting ipqmaxlen to
512
in nextboot file
Warning: changes will take effect only at next reboot
Setting rfc1323 to
1
Setting rfc1323 to
1
in nextboot file
Change to tunable rfc1323, will only be effective
for
future connections
Setting sb_max to
1310720
Setting sb_max to
1310720
in nextboot file
Setting tcp_recvspace to
65536
Setting tcp_recvspace to
65536
in nextboot file
Change to tunable tcp_recvspace, will only be effective
for
future connections
Setting tcp_sendspace to
65536
Setting tcp_sendspace to
65536
in nextboot file
Change to tunable tcp_sendspace, will only be effective
for
future connections
Setting udp_recvspace to
655360
Setting udp_recvspace to
655360
in nextboot file
Change to tunable udp_recvspace, will only be effective
for
future connections
Setting udp_sendspace to
65536
Setting udp_sendspace to
65536
in nextboot file
Change to tunable udp_sendspace, will only be effective
for
future connections
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------ 未完，待续 ！
