Re: Dell-Oracle-Linux: Anyone else run this...because its not working for us!

Interesting. I hadn't considered system hangs caused by flakey hardware / device drivers. This is something I used to encounter a lot (many years ago) with SCO. I can easily imagine Linux suffering similar problems for similar reasons, especially if you start using "exotic" hardware. (I seem to recall a number of horror scenarios with SCO, mostly stemming from using unusual combinations of hardware, like Compaq-proprietary SCSI controllers with token-ring networks...)

Because Linux supports such a huge variety of devices, there's really no way the hardware and device drivers can possible be tested in every combination.

And, of course, a "hung" node is a very different critter from a "failed" node... Yeah, I could envision something like that causing a cluster to hang...

Are such problems unique to Linux, though? I doubt it. But I *could* see them maybe happening more frequently...

Chris, I am curious about this: to what extent did Oracle honour their claims of "unbreakable Linux"? Did they ever "fix" the problem? Did they even try?

Cheers,
-- Mark.

Marquez, Chris wrote:

>2.)
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>>>-----Original Message-----
>>>David wrote:
>>>Have any of you run into the issue whereby
>>>you lost an entire RAC
>>>db(crash) due to a an instance loss?
>>>
>>>
>
>You want a count in total or just for one year? ;o)
>I would be surprised if one running RAC at some point
>did see a RAC instance hang crash cause the other instance to hang.
>Granted the often the OS/Config is the root cause and to blame, but I
>have seen session "GC" waits on one node continue right to the other
>PASSIVE node if we did not shutdown the first dying node. I have seen a
>controller error on nodeA hang instance NodeA and during the reconfigure
>hang instance on NodeB.
>
>What fun...I can feel the panic of management as if it were yesterday.
>:o|
>
>Chris Marquez
>Oracle DBA
>
>--
>http://www.freelists.org/webpage/oracle-l
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