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тАО06-16-2010 05:13 AM
тАО06-16-2010 05:13 AM
'at now' jobs not working . . .except when it's working
This server is an Oracle server and is very busy, although not maxed out at 2 a.m. In fact, the server is less busy than it's been for several years, but the 'at' jobs used to work without issue, and are now failing to run during the server busy times.
Shouldn't the 'at' jobs run regardless of how busy the server is? Or could the 'now' timing be an issue where the server is too busy to execute it "now," and when it gets some free CPU cycles and looks at it again, it's past 'now' so it doesn't execute? (Not sure if that made sense)
Any ideas on how to make the 'at now' job guaranteed to run?
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тАО06-16-2010 06:20 AM
тАО06-16-2010 06:20 AM
Re: 'at now' jobs not working . . .except when it's working
The values in /usr/lib/cron/queuedefs are:
hpux05
a.8j1n
b.2j2n90w
I'm not sure what the 8j1n means for 'at' jobs, so maybe someone can explain that? Maybe that setting needs a change to improve reliability?
Thanks.
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тАО06-16-2010 06:24 AM
тАО06-16-2010 06:24 AM
Re: 'at now' jobs not working . . .except when it's working
Look at the manpages for 'queuedefs'. This will show you how to decipher your posted values.
Regards!
...JRF...
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тАО06-16-2010 06:51 AM
тАО06-16-2010 06:51 AM
Re: 'at now' jobs not working . . .except when it's working
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тАО06-16-2010 06:57 AM
тАО06-16-2010 06:57 AM
Re: 'at now' jobs not working . . .except when it's working
I still like your subject line --- it's a classic :-)
...JRF...
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тАО06-16-2010 07:10 AM
тАО06-16-2010 07:10 AM
Re: 'at now' jobs not working . . .except when it's working
I wish I could get some ideas on this. I raised the number of simultaneous 'at' jobs from 8 to 28. I'll see if that makes a difference.
Thanks again.
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тАО06-16-2010 08:51 AM
тАО06-16-2010 08:51 AM
Re: 'at now' jobs not working . . .except when it's working
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тАО06-16-2010 10:08 AM
тАО06-16-2010 10:08 AM
Re: 'at now' jobs not working . . .except when it's working
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тАО06-16-2010 06:17 PM
тАО06-16-2010 06:17 PM
Re: 'at now' jobs not working . . .except when it's working
I would add at least a simple logger command in front of the job, something like:
logger -p local1.notice "starting job21"
Bill Hassell, sysadmin