user13325639 wrote:Check this PDF http://www.oracle.com/jp/gridcenter/partner/fujitsu/20110627-wp-ggupgrade-en-423587-ja.pdf
I have a 3-node RAC cluster running on AIX 5.3, Oracle Database Enterprise Edition version 10.2.0.4 with ASM. Database size is 2TB. There is also a possibility of upgrading the OS to higher version i.e. AIX 6.1 or AIX 7.
In order to migrate this environment to 11g (Oracle Database Enterprise Edition 18.104.22.168), what will be the best approach while also maintaining minimal downtime?