Re: Any reference about use of CSS in Non-RAC ASM instance,

  • From: "hansraj sao" <hansrajsao@xxxxxxxxx>
  • To: "Dan Norris" <dannorris@xxxxxxxxxxxxx>
  • Date: Fri, 28 Dec 2007 10:30:05 -0500

Dan,



Thank you very much for reference doc. it has some explanation about it.
Actually I was thinking why we need any Cluster services on Non-RAC
instance. But now it is getting clear.



Thanks,

Hansraj


On 12/27/07, Dan Norris <dannorris@xxxxxxxxxxxxx> wrote:
>
>  There's a little more than that in the whitepaper at
> http://www.oracle.com/technology/products/database/asm/pdf/asm_10gr2_bestpractices%2009-07.pdf
> .
>
> On page 12, it says:
> When a diskgroup becomes mounted, ASM registers the diskgroup name, the
> instance name, and the
> corresponding Oracle Home path name with Cluster Synchronization Services
> (CSS). This registered data
> is then used by the database instance to build the TNS connect string.
> This string is subsequently used by
> the database instance to connect into the ASM instance for volume
> management activities. This is
> discussed in the Database Instance Section.
>
> There's some more info on page 16. It isn't in-depth internals, but it's
> better than the one-liner you've found so far.
>
> Incidentally, that paper's author, Nitin Vengurlekar, is probably the
> foremost expert on ASM that I've ever met. He's written or collaborated on
> many of the technical documents you'll find at
> http://www.oracle.com/technology/products/database/asm/index.html
>
> Dan
>
> ----- Original Message ----
> From: hansraj sao <hansrajsao@xxxxxxxxx>
> To: oracle-l@xxxxxxxxxxxxx
> Sent: Thursday, December 27, 2007 11:42:58 AM
> Subject: Any reference about use of CSS in Non-RAC ASM instance,
>
> Hi,
>
> Does any one have details note/white paper which describe use of
> CSS(Cluster Synchronization Services ) in Non-RAC ASM instance. i went thru
> a ASM book and few Metalink notes but did not get much datails other than
> everywhere its written that
>
>  "CSS daemon process is required to enable synchronization between Oracle
> ASM and database instances. It must be running if an Oracle database is
> using ASM for database file storage. "
>
> Can anyone point any note/white paper which describe use of CSS in non-RAC
> ASM instance.
> --
> Thanks,
> Hansraj
>
>
>


-- 
Thanks,
Hansraj

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