topic Re: Cron Problem in Operating System - HP-UX

Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 03:09:02 GMT

Hi,

I have a cron entry in the crontab file which used to run about dozen of days back.

Now suddenly it has stoped to run.

Two things that i investigated:
The cron log shows that it has run successfuly.
There is no problem with the entry, as simply copying-pasting it in shell runs it.

Thanks

Re: Cron Problem

Muthukumar_5 — Tue, 14 Feb 2006 03:13:29 GMT

when it was running at last. what is that time period for that job? can you post that crontab entry and log information for last execution here.

--
Muthu

Re: Cron Problem

Arunvijai_4 — Tue, 14 Feb 2006 03:24:00 GMT

Hello,

What was the expected result? How did you conclude that it wasn't working ?

-Arun

Re: Cron Problem

Arunvijai_4 — Tue, 14 Feb 2006 03:46:01 GMT

Hi Vibhor,

Any ENV variables changed ??

-Arun

Re: Cron Problem

Steven E. Protter — Tue, 14 Feb 2006 03:48:19 GMT

Shalom Vibhor,

Seems to me that cron may have failed to run.

ps -ef | grep cron

If you don't hae a cron daemon running,

/sbin/init.d/cron start

Its also possible that there was a bad entry added to the crontab table.

crontab -l

look for something new and remove it.

If you have recently upgraded your system to trusted, this is a possible impact.

SEP

Re: Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 03:51:00 GMT

It doesn't give any error, neither does it report anything.

The entry is :

01 01 * * 2 script parameter

In the log its:
CMD: script parameter
User_name 10246 c Tue Feb 14 01:01:00 2006

Anything else

Re: Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 03:52:47 GMT

ps -ef | grep cron

root 207 1 0 Nov 17 ? 9:10 /usr/sbin/cron

Re: Cron Problem

Muthukumar_5 — Tue, 14 Feb 2006 03:53:35 GMT

It is working properly,

01 01 * * 2 script parameter

In the log its:
CMD: script parameter
User_name 10246 c Tue Feb 14 01:01:00 2006

It has to execute on every tuesday in the week at 01 minute of 01 hour.

It is done. It will execute script by next tuesday as,

Feb 21 01:01:00 2006 time.

what is the problem you are seeing with this.

--
Muthu

Re: Cron Problem

Muthukumar_5 — Tue, 14 Feb 2006 03:55:19 GMT

change this line of

01 01 * * 2 script parameter

to suite your requirement of execution time (If you need). Please tell if you want to change time of execution of this script.

--
Muthu

Re: Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 03:57:21 GMT

If it had run, then the output would have been visible to me.

The script copies something, which isn't happening.
The script is error free as simply running:

script parameter
works fine and this used to run via cron also some days back.

That's what i am not able to find out.

Re: Cron Problem

Arunvijai_4 — Tue, 14 Feb 2006 03:58:03 GMT

Vaibhav,

It has executed properly. what was the result of the script ? How did you its not working ?

-Arun

Re: Cron Problem

Muthukumar_5 — Tue, 14 Feb 2006 04:00:29 GMT

Try this:

xx xx * * 2 script parameter 1>/tmp/test.log 2>&1

change xx xx time and hour to now. Like,

0 15 in india. Change to near coming time and update the change.

what you are getting in /tmp/test.log file?

--
Muthu

Re: Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 04:00:47 GMT

Thats is what the time i require.

Because this cron is running in US and i need to access the thing in India.

Re: Cron Problem

Arunvijai_4 — Tue, 14 Feb 2006 04:03:43 GMT

You can just add another crontab entry to test the things up. Whether the server in US or India, it doesnt matter with a telnet/ssh session.

-Arun

Re: Cron Problem

Muthukumar_5 — Tue, 14 Feb 2006 04:12:53 GMT

Can you give this by command line execution?

script parameter 1>/tmp/test.log 2>&1

and,

what is the full syntax you are using in command like with script name and parameter.

--
Muthu

Re: Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 04:32:50 GMT

The syntax is the one which i have provided

x x x x x /absolute_path parameter

I will have to do some work to add a new entry in that machine.
Will update you when its done.

Thanks

Re: Cron Problem

Pete Randall — Tue, 14 Feb 2006 06:18:08 GMT

Vibhor,

The cron log should show both the start and completion enties for your job, like this:

> CMD: /apps/bin/wb/checkweb.ksh
> informix 7818 c Fri Feb 10 13:08:00 EST 2006
< informix 7818 c Fri Feb 10 13:08:00 EST 2006

Does you log contain an entry indicating the completion?

Pete

Re: Cron Problem

Pete Randall — Tue, 14 Feb 2006 06:18:53 GMT

Sorry . . . . . "your log".

Pete

Re: Cron Problem

Vibhor Kumar Agarwal — Tue, 14 Feb 2006 06:56:22 GMT

No,

It contains only one entry.
That means it hasn't run.

Now the question comes, WHY?

Re: Cron Problem

Pete Randall — Tue, 14 Feb 2006 07:14:51 GMT

If it only contains one entry, then the job started but has not completed. If you run "ps -ef |grep YOUR_SCRIPT", does it return anything?

Pete