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Message Posted: Mon, 25 Jun 2001 @ 14:51:25 GMT

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Subj:   Re: Graceful shut down of Teradata
From:   Charles Farley

I actually have a question here as well-

Our FEs and I have gone through some things like this in the last few years and I found a few things to be helpful, but I wanted to know if I am correct, or if I am doing the "dance around the computer and it WILL boot" thing (ancient IT secret...).

First, our FEs insisted that the database would NOT shutdown cleanly if a powerdown is not executed FROM the LAST node in line. This is due to the sequence in which the rallsh shutdown goes through the nodes to do the shutdown, if there is a node out of order, or if you shutdown from the 2nd or third node, all of the higher number nodes will have a serious issue, because the shutdown command will not reach them (in sequence) before the node issusing the shutdown is shut off.

And second (or finally), my AWS does not have a UPS, but the UPSs' have been found to be EXTREMEMLY sensitive to voltage variances. They are much more sensitive than most building UPS systems, so they may issue some commands whe you do NOT want them to, check your settings there, or am I just nuts to think that if you let your UPS determine when to shut you down, it may make the wrong decision sometimes?

Thanks for listening,


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