Hi, You can find details explanation in "Oracle Database 11g Oracle Real Application Clusters Handbook, 2nd Edition" by K Gopalakrishnan http://books.google.ca/books/about/Oracle_Database_11g_Oracle_Real_Applicat.html?id=XfqK-uN5OFAC&redir_esc=y Danut Bancea Tel: 416 643 1631 -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Niall Litchfield Sent: October 11, 2012 6:30 AM To: nileshkum@xxxxxxxxx Cc: ORACLE-L Subject: Re: Oracle 11g question The best technology keyword to research is Cache Fusion - using a famous web search engine should send you to the 9i docs which have quite a sensible and detailed explanation - you then have better tools to understand the 11g docs. On Thu, Oct 11, 2012 at 10:46 AM, nilesh kumar <nileshkum@xxxxxxxxx> wrote: > Hello Gurus, > If two users say user1 connected to Node1 and user 2 connected t Node 2 > want to update the same block at the same time. How does this works it > works internally in RAC, could you please put some light on this please. > -- > Thanks & Regards > Nilesh > Oracle DBA (sqlplus "/as sysdba" is my world) > > "As our circle of knowledge expands, so does the circumference of darkness > surrounding it."--Einstein > "All men die, few men ever truly live" -- Braveheart > "You can get help from teachers, but you are going to have to learn a lot > by yourself, sitting alone in a room." --Dr. Seuss > "Know me for what I do and for not what I am. Judge me for what I can do > and not for what I have done."-Unknown > "Don't walk in front of me, I may not follow. Don't walk behind me, I may > not lead. Just walk beside me and be my friend."- Albert Camus > "Never argue with an idiot. They drag you down to their level and then beat > you with experience." - Unknown > > > -- > //www.freelists.org/webpage/oracle-l > > -- Niall Litchfield Oracle DBA http://www.orawin.info -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l