sar

[Jade Bulante]

I am trying to run the sar command and it gives me this error:

# sar -a
sar: Can't open /var/adm/sa/sa13

I have followed the instructions on the documentation page but the command does not work at all. Do I have to create a directory called sa??

I have also used this command:

/usr/lib/sa/sadc /usr/adm/sa/sa`date +%d`

Please let me know if you can help out??

Thanks.

[Madhu Sudhan_1]

If the above mentioned directory is not existent. Create it. You should be fine.

...Madhu

[Maureen Gunkel]

Jade,
If the directory does exist, perhaps it is a permissions problem?

[vladimir_1]

You have to specify at least a time interval:

sar -a 1

Regards

[Darrel Louis]

Jade,

By default the /var/adm/sa doesn't exists.
check man sar and sa1.

You can add it in cron so that every night a new file is created and that sar monitors your system.
If you have all the above but it still doesn't work, check with "what /usr/sbin/sar", which revision you have and with "cksum /usr/sbin/sar" for the sizes, if they are correct according with what it should be.
If you want to monitor sar for just now use:
sar -u 2 5.


Have Fun

[jherring]

vladmir is right if you are just running

# sar -a

this error is going to happen. You must specify the time interval.

Jon

[Darrel Louis]

Jade,

The full credit has to go to Vladimir.
The answer given by him is correct.

[CHRIS_ANORUO]

Update your crontab with the following
0 6-22 * * * /usr/lbin/sa/sa1 1200 4
30 22-5 * * * /usr/lbin/sa/sa1 1200 3
30 23 * * * /usr/lbin/sa/sa2 -s 00:00 -e 23:45 -i 3600 -u -b -d -w -q -v

Create directory "sa" in /var/adm and update your crontab as shown above or use the time intervals that suits you.

[nnf97]

mkdir /var/adm/sa
mkdir /var/adm/sa/sa13
And you should be all set.
And after that you can start to figure out the various other settings that are available with sar.

Regards,
Nabeel