Database - RAC/Scalability (MOSC)

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installing 11gr2 rac with existing 10g rac

edited Apr 7, 2011 6:44PM in Database - RAC/Scalability (MOSC) 1 commentAnswered
  Hi, I need suggestions on installing 1120 rac on suse 11 where already 10g rac with asm is running. I need to upgrade the 10g crs and asm while installing 11g crs. Pls share your experience on these

1- what are the challenges to run 10g database on 11gr2 crs? is this suggested?
2- challenges to upgrade asm and crs to 11gr2.
3- can we use 2 asm instance in 11g grid infra to manage 10g and 11g db separately.
4-what could be back strategy for this kind of setup? RMAN or
5-how many extra ip i need to install 11g crs? we plan to use 3 ip for scan. i think rest ip's will be same as 10g so no need for new ip's

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