sar command doesn't run correctly

[Marco_67]

Hello,

I'm getting the following error when running sar command.
sar: Can't open /var/adm/sa/sa19
That sa directory structure is missing on my system (11.11), what's wrong ?
Should I configure sar in advance ?

[Robert-Jan Goossens · Accepted solution]

Hi Marco,

could you check for the line

/var/spool/cron/crontabs# crontab -l sys
#
# -- SAR informatie
#
0,5,10,15,20,25,30,35,40,45,50,55 * * * 0-6 /usr/lib/sa/sa1

Regards,
Robert-Jan

[Marco_67]

Hi Robert,

that line is missing on my crontab...
Should I add it ?
What does it do ?

Thanks for the moment

[Dave Hutton]

Typing "sar" at the command prompt gives you the last 24 hours of history. Like Robert-Jan suggests if you want to type sar without that error to see the last 24 hours. You have to set up that crontab entry so it collects the information.
Otherwise if you are just trying to see current system stats. You need flags on it for example:
# sar -v 5 100

(Theres quite a few so you'll want to check ou the man page.)

[Gopi Sekar]

are you trying to run sar manually from command prompt?

you system does not have /var/adm/sa directory, create it and see whether sar runs properly

also, looks like your crontab is not configured with sar to run automatically, you can add the crontab line mentioned so that it can run automatically to collect system statistics periodically


Regards,
Gopi

[Devender Khatana]

Hi,

If you have not configured it is crontab and give sar at command prompt and get this error, this is perhaps because you are not providing any arguments to it.

On my system :-
iocbk101:/tmp/som>>sar
sar: Can't open /var/adm/sa/sa19

iocbk101:/tmp/som>>sar 1 11111

HP-UX iocbk101 B.11.11 U 9000/800 05/19/05

22:46:05 %usr %sys %wio %idle
22:46:06 9 56 35 0
22:46:07 8 61 31 0
22:46:08 8 72 20 0
22:46:09 10 65 25 0
22:46:10 10 69 21 0

HTH,
Devender

[Rafi Sheikh]

It could simply be that you are not placing the t & n with the command (time interval and number of obs)

[Geoff Wild]

Yes - you need to create the directory structure and then setup sar:

mkdir /var/adm/sa/

The in root's cron, something like:

#
# SAR - for sarcheck
0 * * * * /usr/lib/sa/sa1
10,20,30,40,50 * * * * /usr/lib/sa/sa1
# reduce the sar data
5 19 * * * /usr/lib/sa/sa2 -s 5:00 -e 19:01 -i 600 -A


Rgds...Geoff