Change parameter listed for ulimit command

[Edwin Ruiz_2]

Hi!
How can i change values listed for ulimit command, we have troubles with IAS on HP-UX 11.00 and ORACLE says that we need to change the following values. I have that values actually
# ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 262144
stack(kbytes) 81612
memory(kbytes) unlimited
coredump(blocks) 4194303
nofiles(descriptors) 2048

I want to change
coredump(blocks): unlimited
nofiles(descriptors) 4096
vmemory 4194304

How can i do that? do i need to restart my server?

Thanks for ur information

[Stefan Farrelly · Accepted solution]

ulimit -S to change soft limit (up to max of hard limit), ulimit -H to change hardlimit. see man sh-posix

eg. to change data; ulimit -Sd

Only if you cant increase them high enough might you need to change a kernel parameter and reboot.

[Graham Cameron_1]

As per Stefan, you need to change these parameters for the user which owns IAS(presumably oracle) by editing the .profile
and logging out and in before starting IAS.

No need to restart unless you have had to change any kernel parameters.

-- Graham

[Edwin Ruiz_2]

but.. i just need to exec ulimit -S or ulimit -H for change the values? what kernel parameters are would i change if that no function?

[Steven E. Protter]

nfiles for nofiles

I think you can't increase nofiles higher hant he nfiles setting.

kmtune | grep nfile

SEP

[Edwin Ruiz_2]

I a trying to change # ulimit -Hc unlimited but no function.. i dont have erros but actual value it is same.

[Edwin Ruiz_2]

I just use #ulimit -c unlimited and #ulimit -n 4096 , that function. I edit .profile and add this instruccion. All is working fine!! thanks