AIX – Performance Tuning Standards
.AIO Servers

Default Values:
Minservers = 2
Maxservers = 10
Maxrequests = 4096
Rule of Thumb for Oracle Database System:
maxserver = 300
minservers = 100
maxrequests = 8192
Command:   chdev -l aio0 –P -a maxservers=$MAX -a minservers=$MIN –a
maxreqs=8192

JFS Buffer-Cache

Default Values:
maxperm = 80%
minperm = 20%
strict_maxperm = 0
Rule of Thumb for Database System
DB is on FileSystem & Mounted as DIO
Strict_maxperm = 1
maxperm [...]

Security requirements at a remote data center might not allow connections to the WebSM related ports needed for the p4 or p5 HMC graphic user interface (GUI).
Answer
You can use the popular freeware SSH client , PuTTY, to tell a remote secure shell (SSH) server what ports you want forwarded over an SSH connection.

For all you who are into Photoshop, I found this nice list of trix and tips for Photoshop on 11am design.  Is very good for tutorials b.t.w.
Author =   Gary Logsdon

The numbers in this list display on the operator panel as the system loads the AIX operating system and prepares the hardware by loading software drivers. Note: Some systems may produce 4-digit codes. If the leftmost digit of a 4-digit code is 0, use the three rightmost digits.

Working with EMC powerpath,  IBM MPIO and VIOS. A description on how to build this configuration.

OS LEVEL : AIX
Online command sheet. And my idea is “might come in handy”
Think it`s AIX43 but most command can still be used in 5.X, if I find a better one I`ll put it up here too.

Stefano wrote on tek-tips about having a HACMP problem. Me having the same problem at work found his post, and I wanna thank Stefano for the solution to this problem.
the clstrmgrES daemon crashes as soon as it is started.
I see it from the log:
lpar6# cat /tmp/clstrmgr.debug
Fri Aug 29 12:09:50 HACMP/ES Cluster Manager Version 5.3
Using ODMDIR=/etc/es/objrepos
Fri [...]

You can unmirror the root volume group.
Attention: Unmirroring the root volume group requires advanced system administration experience. If not done correctly, your system can become unbootable.
In the following scenario, the root volume group is on hdisk01 and mirrored onto hdisk11. This example removes the mirror on hdisk11. The procedure is the same, regardless of which [...]

Hardening your AIX system.
- Configure changes for the root user to provide additional security, audit, and reliability. Make a dedicated home directory for the root user ID and change the root user ID home directory to use new directory, allowing a cleaner / directory. Change directory permissions to allow for root access only.
# mkdir /root
# [...]