topic Re: Kernel Changes get Rest in Operating System - HP-UX

Kernel Changes get Rest

Michael Gretton — Mon, 13 Jan 2003 14:29:28 GMT

I am rebuilding a box from scratch (hp-ux 10.20). I have the OS installed and everything is configured except my kernel. I am tuning for oracle. I have an old oracle application that still needs oracle 7.3.4 on Hp-ux 10.20. I am trying to modify my semaphore parameters and I after I make the changes, I elect to rebuild the kernel and reboot. After the reboot, the old parameters are there. Nothing changed! I thought perhaps I didn't know what I was doing with the semaphores so I changed another parameter by one value to see if perhaps I am just crazy. I rebuilt the kernel and again, they are reset to they way they were. I went to /stand to see if I can see any core dumps. There aren't any. Further, the kernel file has been modified to the current date and time. Any thoughts?

Re: Kernel Changes get Rest

Ravi_8 — Mon, 13 Jan 2003 14:46:22 GMT

Hi,

#kmtune -s =value
eg: #kmtune -s semmin=1

set for all parameters that you needs change

#cp -p /stand/vmunix /stand/vmunix (kernel backup)

#cd /stand/build
#mk_kernel
#mv vmunix_test /stand/vmunix
#reboot
#kmtune|grep -i sem

all semaphores parameters are set to new values

Re: Kernel Changes get Rest

Ravi_8 — Mon, 13 Jan 2003 14:46:51 GMT

Hi,

#kmtune -s =value
eg: #kmtune -s semmin=1

set for all parameters that you needs change

#cp -p /stand/vmunix /stand/vmunix.org (kernel backup)

#cd /stand/build
#mk_kernel
#mv vmunix_test /stand/vmunix
#reboot
#kmtune|grep -i sem

all semaphores parameters are set to new values

Re: Kernel Changes get Rest

Armin Feller — Mon, 13 Jan 2003 14:46:54 GMT

Hi,

unbeliefable ;-(

Please try following:

# cd /stand/build
# rm -r *
# cp /stand/system /stand/sytem.prev
# /usr/lbin/sysadm/system_prep -s /stand/system
# diff /stand/system /stand/system.prev

then
# vi /stand/system
and update the kernel parameter

# mk_kernel
# kmupdate
# cd /
# shutdown -r 0

Hope that helps.

Regards ...
Armin

Re: Kernel Changes get Rest

Michael Gretton — Mon, 13 Jan 2003 15:00:01 GMT

Why can't I just use sam? Why is this happening now? I have been using this box and other Hp-ux boxes for years and have not had this problem.

Re: Kernel Changes get Rest

harry d brown jr — Mon, 13 Jan 2003 15:06:16 GMT

Michael,

You should take care of this:

This member has assigned points to 55 of 232 responses to his/her questions.

You can find your previous posts in your profile:

http://forums.itrc.hp.com/cm/TopSolutions/1,,CA400109!1!questions,00.html

As to your problem, after you reloaded HPux 10.20, you should have installed the latest patch bundle, which would have taken care of the issue. Therefore you need to install the latest patch bundle, and "sam" will work just fine!

live free or die
harry

Re: Kernel Changes get Rest

harry d brown jr — Mon, 13 Jan 2003 15:08:39 GMT

Get the patch bundle(s) from here:

http://www.software.hp.com/SUPPORT_PLUS/info.html

live free or die
harry