topic Re: Shutting down Interactive sessions to run database process in Operating System - HP-UX

Shutting down Interactive sessions to run database process

Brett Penza — Wed, 22 Aug 2001 11:38:24 GMT

I am looking for a way to stop all the user terminal processes so that they cannot lock up files, in order to run some unattended nightly processing. I am running AVANTE on a Unidata database. We run a nightly MRP process. Often files will be locked and the nightly process blows up. If I could come up with some way of shutting down all the interactive user sessions prior to running the nightly process, I could prevent this from happening. I could shut down unidata, but then nothing will run (even the nightly process). Is there something I could do with the "ps" or "kill" to stop only the user screens ? I do have a method of shelling out to running unix commands from the AVANTE System. I just don't know what command to run. Any ideas welcome Thanks.

Re: Shutting down Interactive sessions to run database process

Praveen Bezawada — Wed, 22 Aug 2001 11:49:38 GMT

Hi
To kill all the user terminal you can do something like

PIDS=`who -T | grep -v root | awk '{ print $8 }'`

for eachProc in $PIDS;do
kill -15 $eachProc
done

if you want not to kill someother users include them with grep -v options
like
who -T | grep -v root | grep -v otheruser

...BPK...

Re: Shutting down Interactive sessions to run database process

Paula J Frazer-Campbell — Wed, 22 Aug 2001 12:13:30 GMT

Hi Brett

This is somthing I do on a regular basis.

Create a stripped down passwd, mine is called passlock and contains only root and system entries.

Also create a user clear up script:-

who -u | grep | awk '{print $7}' | xargs kill

As my users are in groups I can pick them off by this method.

To Zap them all then:-

who -u | awk '{print $7}' | xargs kill

At routine start time :-

cp /etc/passwd /etc/passback
cp /etc/passlock /etc/passwd

The users now cannot log in.

Run your clear users commands (as above).

Run your process clear commands:-

ps -ef |grep | awk '{print $2}' | xargs kill

Then carry out your MRP process.

When finished :-

cp /etc/passback /etc/passwd
(lets the users in)
and restart processes.

HTH

Paula