topic Re: set process/suspend in Operating System - OpenVMS

set process/suspend

JKrucus — Fri, 21 Oct 2005 11:52:40 GMT

I have batch jobs that run for several days, and occasionally I need to reboot, which kills all batch jobs of course.
If I /suspend the batch process before rebooting, can I /resume it after the reboot and have it run like nothing happened?
I assume /suspend /resume works fine on a running system; has anyone tried it with a reboot in the middle?

Re: set process/suspend

Uwe Zessin — Fri, 21 Oct 2005 12:24:40 GMT

It will only 'block' the process and prevent any further execution. Unfortunately, on a system shutdown ALL processes are deleted. Last time I checked, OpenVMS cannot preserve a process state that survives a reboot.

You can check the batch "restart" feature, but that is only helpful if you have multiple .EXE files with some DCL code in-between, because the batch "checkpoints" are DCL labels. You still need to cope with the deletion of processes and data inconsistencies due to the deletion.

Re: set process/suspend

Jan van den Ende — Fri, 21 Oct 2005 12:37:26 GMT

JKrucus,

"I have batch jobs that run for several DAHS" (capitals by me)

and

"occasionally I need to reboot, which kills all batch jobs of course."

It strikes me as strange that you have to reboot VMS DURING a run of ony a few DAYS.

Are you sure you NEED that frequent reboots?

VMS systems routinely run uninterupted for months or years.

I would have a serious review of the NEED for those reboots.

Proost.

Have one on me.

jpe

Re: set process/suspend

Jan van den Ende — Fri, 21 Oct 2005 12:38:45 GMT

oops.

"DAHS" should read "DAYS"

Proost.

Have one on me.

jpe

Re: set process/suspend

JKrucus — Fri, 21 Oct 2005 13:06:36 GMT

It is an application issue, not a VMS issue, that requires a reboot, but that is another story.....

Re: set process/suspend

JKrucus — Fri, 21 Oct 2005 13:09:52 GMT

Thank you, it is as I expected.

Re: set process/suspend

JKrucus — Fri, 21 Oct 2005 13:11:37 GMT

Re: set process/suspend

Lawrence Czlapinski — Fri, 21 Oct 2005 15:31:50 GMT

Still you should be able to kill the application without having to reboot through Availability Manager if no other way.
Lawrence

Re: set process/suspend

Uwe Zessin — Sat, 22 Oct 2005 08:08:39 GMT

Re-read the thread: it's not about killing a process!
It's about preserving a process state over reboots.