ADSM-L

Re: Advisory on server db processes

2000-09-11 08:59:43
Subject: Re: Advisory on server db processes
From: Jelle Komrij <jkomrij AT ZONNET DOT NL>
Date: Sun, 10 Sep 2000 20:28:34 +0200
What server version are you running ?

Richard Sims wrote:

> One bit of wisdom and advice that should be shared with the newer
> people on the list is:
>  Avoid running more than one heavy *SM database update process at one time.
>
> The product has historically had an Achilles heel wherein running
> multiple concurrent server processes with heavy database updating
> will cause serious problems: deadlocks, server failure, and even
> database damage.  Commands such as Delete Filespace and Delete Volume
> are particular instances of intense database update operations that can
> cause such problems.  (The unfortunate fellow who wrote in this
> morning of losing his server ran into this with multiple Delete Volume
> commands running concurrently.)  Run one of these at a time, and wait
> for it to finish before starting another.
>
> We could hope that future versions of the product would no longer be
> vulnerable to this condition; but it persists well into Version 3, so
> it may be intractable.  (I expect that it will persist as long as the product
> utilizes its private, proprietary database.)
>
> I just don't want to see any other customers inadvertently fall victim to
> this, so please be advised.
>
>     Richard Sims, BU
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