topic Re: How to set ulimit on HP-UX 11i for non-root users in Operating System - HP-UX

How to set ulimit on HP-UX 11i for non-root users

ShanA_2 — Tue, 03 Oct 2006 01:38:50 GMT

i want to set ulimit parameter for oracle user.
# ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 1048576
stack(kbytes) 131072
memory(kbytes) unlimited
coredump(blocks) 4194303
nofiles(descriptors) 60

in the above i want to reset the
coredump=unlimited
nofiles=4096
how do i set?
will it affect other users in the system?

Re: How to set ulimit on HP-UX 11i for non-root users

Peter Godron — Tue, 03 Oct 2006 01:53:10 GMT

Hi,
and welcome to the ITRC forums with your first question.
ulimit -n 4096
ulimit -c unlimited

These will only work if ulimit -aH (Hard Limit Values) allows it

For more info on impact, please see:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1040943

If you found these answers helpful, please read:
http://forums1.itrc.hp.com/service/forums/helptips.do?#28

Re: How to set ulimit on HP-UX 11i for non-root users

ShanA_2 — Tue, 03 Oct 2006 02:08:48 GMT

Thanks for the reply, please let me know the kernel parameter for coredump.

Re: How to set ulimit on HP-UX 11i for non-root users

Peter Godron — Tue, 03 Oct 2006 02:42:56 GMT

Hi,
no seperate coredump kernel parameter required, as set by shell.
ulimit -cH will give hard max value for coredumpsize.

For initial reading please see:
http://acs.ucsd.edu/info/coredump.php

Re: How to set ulimit on HP-UX 11i for non-root users

ShanA_2 — Tue, 03 Oct 2006 02:57:03 GMT

but, all the settings are vanish when i exit the current shell, how do i make it permanent for all the users.

Re: How to set ulimit on HP-UX 11i for non-root users

Peter Godron — Tue, 03 Oct 2006 03:08:28 GMT

Hi,
for individual users edit there .profile file in their home directories.

If you want to make changes for all users change the /etc/profile file.

Then logout/login to activate.

Re: How to set ulimit on HP-UX 11i for non-root users

Steven E. Protter — Tue, 03 Oct 2006 03:33:20 GMT

Shalom,

Doing the unlimited thing which is good for most users breaks some oracle environment scripts. You'll need to debug them when oracle coughs up a furball concerning the unlimited issue. You can make it work, its just a little more manual work.

SEP

Re: How to set ulimit on HP-UX 11i for non-root users

Peter Godron — Tue, 03 Oct 2006 06:59:15 GMT

Hi,
sorry to see that me answers:
"1-3: The answer didn't really help answer my question, but thanks for your assistance!"

Can you please let us know if there is anything else of your question unanswered or if not, please close this thread, summarizing the solution.

Re: How to set ulimit on HP-UX 11i for non-root users

Nick Stocker — Fri, 16 Mar 2007 08:44:37 GMT

I think the command you are looking for is: "limit descriptors 4096". Run this as the user you want it changed for. This will reset the nofiles(descriptors) limit for that user.

Re: How to set ulimit on HP-UX 11i for non-root users

Dennis Handly — Fri, 16 Mar 2007 22:12:12 GMT

It appears you want to make coredump and nofiles larger.

To set the latter larger, you may have to use kctune/kmtune to set maxfiles_lim to 4096. (Mentioned in Peter's link.)

(Unless you used ulimit to set it smaller for yourself and now want it bigger.)

>Nick: I think the command you are looking for is: "limit descriptors 4096".

I'm not aware of that on HP-UX.