> the type/caracteristics of the disk-subsystem (like hardware RAID5 /cache centric...)
I can't find any information about that, about /etc/fstab :
/dev/vg00/lvol3 / vxfs delaylog 0 1
/dev/vg00/lvol1 /stand hfs defaults 0 1
/dev/vg00/lvol4 /tmp vxfs delaylog 0 2
/dev/vg00/lvol5 /home vxfs delaylog 0 2
/dev/vg00/lvol6 /opt vxfs delaylog 0 2
/dev/vg00/lvol7 /usr vxfs delaylog 0 2
/dev/vg00/lvol8 /var vxfs delaylog 0 2
/dev/vg01/lvol1 /<mydata> vxfs rw,suid,largefiles,delaylog,datainlog 0 2

> creating more swap of same size on other devices will balance I/O load...
Ok. I will try to tune the Unix Kernel configuration on the first phase,
on the second phase, I will try to tune the Oracle configuration,
and the last, I will try the I/O part
so, I will know how much each phase take effects.

> If you know your subsystem has cache then reduce the amount of system buffers
from sysdef today, my bufpages value is 198371 (yesterday 416197)
from my kmtune, the value of bufpages is 0 (zero = flexibel?)
based on system performance tuning from http://docs.hp.com/en/64/hppg/hpconf.htm,
the result is "buffer cache is too small" (from chapter 6.2.2 point 2)
it makes me a little bit confuse, because I think the value is quite large.

> values of maxusers... how many concurrent users?
maxusers=32
my users=20-25
I will uplift this value upto 256, because the weblogic recommends this value
for my HP-UX server (and just in case, a user opens more than 1 session)

> I there a good reason for maxuprc 3686?
no idea yet.. I'll try to find out.

> I would reduce of 200000 your redo and data buffers
> Can you give this a try and lets see what happens?
Ok. I will try this at my second phase of tuning (oracle tuning) and give you information
about the result

At first phase, I will change these kernel configuration :
max_thread_proc 256 upto 1024 (weblogic recommendation for my version of HP-UX)
maxfiles 60 upto 256 (weblogic recommendation for my version of HP-UX)
maxusers 32 upto 256 (weblogic recommendation for my version of HP-UX)
nkthread 7184 - (weblogic recommends 3635 for my version of HP-UX)
nproc 4096 - (weblogic recommends 2068 for my version of HP-UX)
ncallout 7200 - (weblogic recommends 2084 for my version of HP-UX)
maxuprc 3686 downto 2048 (trial)


I will try the Unix Kernel tune today, and I will give you the result tommorow.

Thanks.