We have Oracle 9i on Solaris 9 with about 2 TB of data/index on SAN. We want to migrate this to 2 new boxes running Solaris 10 and Oracle 10g RAC -- storage SAN. What should be the best approach (in terms of time & recoverability) considering:
1. Fastest copying method for data/index from existing system (Solaris 9/Oracle 9i -> Solaris 10/Oracle 10g -- all on separate machines).
2. No return to 9i, once it 10g, stay Stanalone and/or RAC.
3. If 10g Standalone to RAC creates problem, stay on 10g Standalone and try later.
4. If ASM creates any issue, stay non-ASM/RAW files and try later.