Ram, This is good document to start. http://www-03.ibm.com/support/techdocs/atsmastr.nsf/5cb5ed706d254a8186256c71006d2e0a/12c246ced8e687d48625733400546694/$FILE/ORA%2010g%20tips%20070908.pdf ________________________________ From: Ram Raman <veeeraman@xxxxxxxxx> To: ORACLE-L <oracle-l@xxxxxxxxxxxxx> Sent: Thursday, May 7, 2009 10:16:05 AM Subject: RAC on AIX pre requisites Hi all, Does anyone have a document for the systems administrators, network guys to prepare the environment for RAC install? This is before turning it over to the DBAs. I have put together information from the install manual, but they seem to want something different. Oracle 10.2 with aix 5.3 on DMX4. Thanks.