Re: OPS on a single machine ?

Hi,

I'm just making assumptions. According to an Oracle guy, with OPS on 8.1.7, the instances communicate via 2 different ways. One way is via network connections (process to process communication). The other way is via locking blocks and propagating it via distr. lock manager. So, according to what he said, the instance is also taking a look at the disk directly and checking the block it wants to read (it's a raw device, so there won't be a file system). What I don't know is, how are the locks propagated ? Is there a shared datastructure (kind of a lock list) that can be accessed by both instances (and how is it maintained and accessed?) or does the instance check the status of the block directly ?

> Hallas John schrieb:
>
> That's an interesting concept. Won't there be problems with file
> sharing. Once the first instance has started will the 2nd one be
> allowed access to the datafiles?. I don't know much about raw files
> but I suspect that would be the problem area.
>
> -----Original Message-----
> From: Stefan Jahnke [mailto:stefan.jahnke_at_d2vodafone.de]
> Sent: 04 September 01 08:40
> To: Multiple recipients of list ORACLE-L
> Subject: OPS on a single machine ?
>
> Hi,
>
> I was wondering if it is possible to set up OPS on a single machine.
> Maybe like this:
> 1 disk as a raw device, then set up an instance to use the raw device
> and set up parallel server's second instance to use the raw device,
> too.
> Before I go through the hassle just to find out that it doesn't work,
> did anybody try this before ?
>
> (I'm on SuSE 7.2, Oracle 8.1.7 with OPS option)
>
> --
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> | Regards, |
> | Stefan Jahnke |
> | BOV AG |
> | @:D2 Vodafone, Abt.: FBOM |
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> Author: Stefan Jahnke
> INET: stefan.jahnke_at_d2vodafone.de
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-- 
 ----------------------------
| Regards,                   |
| Stefan Jahnke              |
| BOV AG                     |
| @:D2 Vodafone, Abt.: FBOM  |
| Tel.: 0211/533-4893        |
 ----------------------------
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Stefan Jahnke
  INET: stefan.jahnke_at_d2vodafone.de

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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