Kernal log files

[Eddy R.]

hi all,

is there any log files where the kernal's changes are stored and saved?
regards.

[RAC_1]

Which OS version??

On 11i, it is /stand/system. You should back it up when kernel is recompiled.

on 11i, v2 (aka 11.23)

/stand/current, /stand/backup, and whatever you define it as.

[Rajesh SB · Accepted solution]

Hi,

We can view the modified kernel parameters from default value using command

# kmtune -l

/stand/system shows the current kernel system parameters.
By looking into /var/sam/log/samlog, kernel rebuild related info can be tracked.

Regards,
Rajesh

[Raj D.]

Hi Eddy ,

Its /stand/system where kernel parameters are stored.

And it stores in this way:

* Tunable parameters

STRMSGSZ 65535
bufpages 51200
create_fastlinks 1
dbc_max_pct 20
default_disk_ir 1
max_thread_proc 256
maxdsiz 0X3C600000
maxfiles 200
maxfiles_lim 2048
...
---------------------------

1.To view a kernel parameter you can do :
# kmtune -q maxfiles
Parameter Value
===============================================================================
maxfiles 200


2. To set a value ,
# kmtune -s maxfiles=500

And make the changes effective , then need to rebuild kernel with ./mk_kernel and ./kmupdate and reboot the system with shutdown -r -y 0

Cheers,
Raj.