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Automatic REBOOT if there is a power failure

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Chaim Budnick
Regular Advisor

Automatic REBOOT if there is a power failure

One of our customer ALPHA's did NOT automatically reboot after a power failure.

Is there a way to check the setting from VMS, or can this be done only from ">>>"?

Chaim
7 REPLIES
Uwe Zessin
Honored Contributor
Solution

Re: Automatic REBOOT if there is a power failure

Is it this one what you were looking for?

$ write sys$output f$getenv("auto_action")
HALT
$
.
Chaim Budnick
Regular Advisor

Re: Automatic REBOOT if there is a power failure

Thanks!

I checked this and the value is BOOT!

Nevertheless the ALPHA did NOT reboot after a power failure!

Any ideas?

Chaim
Chaim Budnick
Regular Advisor

Re: Automatic REBOOT if there is a power failure

It is OpenVMS V7.1-2

Chaim
Uwe Zessin
Honored Contributor

Re: Automatic REBOOT if there is a power failure

It could have been a problem with the system disk. You haven't described the system in more detail, so it is hard to guess.

On older versions I have seen problems (fortunately very seldom) when the system lost power or crashed. For some reason the system could not boot from a 'dirty' (not properly dismounted) system disk. It worked after I booted from CD-ROM and did a manual mount with implicit rebuild.
.
Bojan Nemec
Honored Contributor

Re: Automatic REBOOT if there is a power failure

Chaim,

Is the Alpha on UPS and have a shutdown software?

If so (depends on UPS) there is a possibility that the software get the low battery signal and started the shutdown. Just after that the power returns, so the alpha was on power all the time, but remains in shutdown state.

Bojan
Chaim Budnick
Regular Advisor

Re: Automatic REBOOT if there is a power failure

BINGO!

You are correct!

There is a UPS and a power monitor which will invoke a shutdown after 10 minutes on battery power.

More POWER to you !!!!

Chaim
Bojan Nemec
Honored Contributor

Re: Automatic REBOOT if there is a power failure

Chaim,

That is a great problem. Some UPSes have a special software that shuts down also the UPS. So once the shutdown procedure is started, there will be a power failure (real or simulated by UPS). In most cases the software dont run on VMS :-(

Bojan