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